@master4n/http-status - npm Package Compare versions

Comparing version 1.1.2 to 2.0.0

CHANGELOG.md

+# Changelog
+
+## 2.0.0 — BREAKING
+
+This is a clean break from v1. The library has been repositioned as a machine-readable HTTP status registry optimised for AI agents and RAG pipelines.
+
+### Removed
+
+- The `HttpStatus` class (and its instance shape `{ name, value }`). Methods `HttpStatus.valueOf()` and `HttpStatus.values()` are removed.
+
+### Added
+
+- `IanaStatus`, `CloudflareStatus`, `NginxStatus` — immutable `as const` objects mapping names to numeric codes.
+- `IanaRegistry`, `CloudflareRegistry`, `NginxRegistry`, `CompleteRegistry` — `Record<number, HttpStatusMetadata>` with full per-code metadata.
+- `HttpStatusMetadata` interface — spec-derivable top-level fields (`code`, `phrase`, `category`, `source`, `rfc`, `specUrl`, `description`, `expectsEmptyBody`, `isCacheable`, `requiresAuth`, `safeForMethods`, `relatedHeaders`, `aliases`, `deprecated`) plus an authored `guidance: {...}` sub-object (`isRetryable`, `retryStrategy`, `agentAction`, `commonCauses`, `relatedStatuses`).
+- Predicates in `/utils`: `isInformational`, `isSuccess`, `isRedirection`, `isClientError`, `isServerError`, `isError`, `isRetryable`, `hasEmptyBody`, `isCacheable`, `requiresAuth`, `getMetadata`.
+- Tree-shakable sub-paths: `@master4n/http-status/iana`, `/cloudflare`, `/nginx`, `/utils`.
+- Pre-built JSON registry at the package root (`./registry.json` export, also reachable via unpkg/jsDelivr CDN URLs).
+- `llms.txt` discovery file at the package root.
+- Coverage expanded from ~50 to **77 codes** (62 IANA + 9 Cloudflare + 6 Nginx), each cited to an RFC or vendor doc URL.
+
+### Migration
+
+| v1                              | v2                                                            |
+|---------------------------------|---------------------------------------------------------------|
+| `HttpStatus.OK.value`           | `IanaStatus.OK`                                               |
+| `HttpStatus.OK.name`            | `IanaRegistry[IanaStatus.OK].phrase`                          |
+| `HttpStatus.valueOf(200)`       | `IanaRegistry[200].phrase` (or `getMetadata(200)?.phrase`)    |
+| `HttpStatus.values()`           | `Object.keys(IanaStatus)`                                      |
+
+Import-path changes:
+
+```ts
+// v1
+import { HttpStatus } from '@master4n/http-status';
+
+// v2
+import { IanaStatus, IanaRegistry } from '@master4n/http-status/iana';
+import { isRetryable } from '@master4n/http-status/utils';
+```
+
+### Build & tooling
+
+- Replaced Rollup with `tsup` for dual ESM/CJS + `.d.ts` emission.
+- Added `vitest` for testing (coverage, predicates, manifest, treeshake suites).
+- Published from `dist/` as before; the dev `package.json` and the published `package.json` are now distinct (dev has scripts/devDependencies; published has `exports`, `sideEffects: false`, and dist-relative paths).
+- Added `prepare-publish.ts` that writes the stripped runtime manifest into `dist/` and copies `README.md`, `LICENSE`, `CHANGELOG.md`, `llms.txt`.
+- Added `build-manifest.ts` that writes the sorted JSON registry into `dist/http-status-registry.json`.

cloudflare/index.cjs

+'use strict';var r={WEB_SERVER_RETURNED_UNKNOWN_ERROR:520,WEB_SERVER_IS_DOWN:521,CONNECTION_TIMED_OUT:522,ORIGIN_IS_UNREACHABLE:523,TIMEOUT_OCCURRED:524,SSL_HANDSHAKE_FAILED:525,INVALID_SSL_CERTIFICATE:526,RAILGUN_ERROR:527,ORIGIN_DNS_ERROR:530},e="https://developers.cloudflare.com/support/troubleshooting/http-status-codes/5xx-errors/",t={520:{code:520,phrase:"Web Server Returned an Unknown Error",category:"Vendor Extension",source:"Cloudflare",rfc:null,specUrl:`${e}#error-520-web-server-returns-an-unknown-error`,description:"The origin server returned an empty, unknown, or unexpected response to Cloudflare.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"exponential-backoff",agentAction:"Retry; if persistent, the origin is misbehaving and needs operator attention.",commonCauses:["Origin crashed mid-response","Origin returned malformed HTTP"],relatedStatuses:[502]}},521:{code:521,phrase:"Web Server Is Down",category:"Vendor Extension",source:"Cloudflare",rfc:null,specUrl:`${e}#error-521-web-server-is-down`,description:"The origin server refused the connection from Cloudflare. Cloudflare could not establish a TCP connection.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"exponential-backoff",agentAction:"Retry; verify origin is running and not blocking Cloudflare IPs.",commonCauses:["Origin down","Cloudflare IPs blocked at firewall"],relatedStatuses:[502,503]}},522:{code:522,phrase:"Connection Timed Out",category:"Vendor Extension",source:"Cloudflare",rfc:null,specUrl:`${e}#error-522-connection-timed-out`,description:"Cloudflare could not negotiate a TCP handshake with the origin server before timing out.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"exponential-backoff",agentAction:"Retry; investigate origin network reachability.",commonCauses:["Origin overloaded","Network partition between CF and origin"],relatedStatuses:[504]}},523:{code:523,phrase:"Origin Is Unreachable",category:"Vendor Extension",source:"Cloudflare",rfc:null,specUrl:`${e}#error-523-origin-is-unreachable`,description:"Cloudflare could not reach the origin server, commonly due to a routing/BGP issue or invalid DNS record.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"exponential-backoff",agentAction:"Retry; if persistent, check origin DNS and routing.",commonCauses:["DNS record points to wrong IP","BGP routing problem"],relatedStatuses:[530]}},524:{code:524,phrase:"A Timeout Occurred",category:"Vendor Extension",source:"Cloudflare",rfc:null,specUrl:`${e}#error-524-a-timeout-occurred`,description:"Cloudflare successfully connected and sent data to the origin, but the origin took too long to respond with an HTTP response.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"exponential-backoff",agentAction:"Retry; for long-running requests, consider an async pattern (e.g., 202 + polling).",commonCauses:["Long-running origin request exceeded the 100-second CF limit."],relatedStatuses:[504,408]}},525:{code:525,phrase:"SSL Handshake Failed",category:"Vendor Extension",source:"Cloudflare",rfc:null,specUrl:`${e}#error-525-ssl-handshake-failed`,description:"Cloudflare could not negotiate an SSL/TLS handshake with the origin server.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Operator action: align cipher suites and TLS versions between CF and origin.",commonCauses:["No common cipher suite","TLS version mismatch"],relatedStatuses:[526]}},526:{code:526,phrase:"Invalid SSL Certificate",category:"Vendor Extension",source:"Cloudflare",rfc:null,specUrl:`${e}#error-526-invalid-ssl-certificate`,description:"Cloudflare could not validate the SSL certificate on the origin web server when SSL Full (strict) mode is active.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Operator action: install a valid origin certificate or relax SSL mode.",commonCauses:["Expired or self-signed origin cert","Hostname mismatch"],relatedStatuses:[525]}},527:{code:527,phrase:"Railgun Error",category:"Vendor Extension",source:"Cloudflare",rfc:null,specUrl:`${e}#error-527-railgun-listener-to-origin`,description:"Indicates an error connecting between Cloudflare and the origin's Railgun (rwengine) server.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:true,guidance:{isRetryable:true,retryStrategy:"exponential-backoff",agentAction:"Retry; Railgun is largely deprecated in favor of Argo Smart Routing.",commonCauses:["Railgun listener unreachable."],relatedStatuses:[]}},530:{code:530,phrase:"Origin DNS Error",category:"Vendor Extension",source:"Cloudflare",rfc:null,specUrl:"https://developers.cloudflare.com/support/troubleshooting/cloudflare-errors/troubleshooting-cloudflare-1xxx-errors/",description:"A 530 response is typically returned alongside a Cloudflare 1xxx error displayed in the body, indicating an origin DNS or worker failure.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"exponential-backoff",agentAction:"Inspect the body for the embedded 1xxx code; resolve DNS or Worker error.",commonCauses:["Origin DNS resolution failure","Worker script error"],relatedStatuses:[523]}}};
+exports.CloudflareRegistry=t;exports.CloudflareStatus=r;

cloudflare/index.d.cts

+import { c as HttpStatusMetadata } from '../types-D9bAZ7ge.cjs';
+
+declare const CloudflareStatus: {
+    readonly WEB_SERVER_RETURNED_UNKNOWN_ERROR: 520;
+    readonly WEB_SERVER_IS_DOWN: 521;
+    readonly CONNECTION_TIMED_OUT: 522;
+    readonly ORIGIN_IS_UNREACHABLE: 523;
+    readonly TIMEOUT_OCCURRED: 524;
+    readonly SSL_HANDSHAKE_FAILED: 525;
+    readonly INVALID_SSL_CERTIFICATE: 526;
+    readonly RAILGUN_ERROR: 527;
+    readonly ORIGIN_DNS_ERROR: 530;
+};
+type CloudflareStatusCode = (typeof CloudflareStatus)[keyof typeof CloudflareStatus];
+type CloudflareStatusName = keyof typeof CloudflareStatus;
+declare const CloudflareRegistry: Readonly<Record<CloudflareStatusCode, HttpStatusMetadata>>;
+
+export { CloudflareRegistry, CloudflareStatus, type CloudflareStatusCode, type CloudflareStatusName };

cloudflare/index.d.ts

+import { c as HttpStatusMetadata } from '../types-D9bAZ7ge.js';
+
+declare const CloudflareStatus: {
+    readonly WEB_SERVER_RETURNED_UNKNOWN_ERROR: 520;
+    readonly WEB_SERVER_IS_DOWN: 521;
+    readonly CONNECTION_TIMED_OUT: 522;
+    readonly ORIGIN_IS_UNREACHABLE: 523;
+    readonly TIMEOUT_OCCURRED: 524;
+    readonly SSL_HANDSHAKE_FAILED: 525;
+    readonly INVALID_SSL_CERTIFICATE: 526;
+    readonly RAILGUN_ERROR: 527;
+    readonly ORIGIN_DNS_ERROR: 530;
+};
+type CloudflareStatusCode = (typeof CloudflareStatus)[keyof typeof CloudflareStatus];
+type CloudflareStatusName = keyof typeof CloudflareStatus;
+declare const CloudflareRegistry: Readonly<Record<CloudflareStatusCode, HttpStatusMetadata>>;
+
+export { CloudflareRegistry, CloudflareStatus, type CloudflareStatusCode, type CloudflareStatusName };

cloudflare/index.js

+var r={WEB_SERVER_RETURNED_UNKNOWN_ERROR:520,WEB_SERVER_IS_DOWN:521,CONNECTION_TIMED_OUT:522,ORIGIN_IS_UNREACHABLE:523,TIMEOUT_OCCURRED:524,SSL_HANDSHAKE_FAILED:525,INVALID_SSL_CERTIFICATE:526,RAILGUN_ERROR:527,ORIGIN_DNS_ERROR:530},e="https://developers.cloudflare.com/support/troubleshooting/http-status-codes/5xx-errors/",t={520:{code:520,phrase:"Web Server Returned an Unknown Error",category:"Vendor Extension",source:"Cloudflare",rfc:null,specUrl:`${e}#error-520-web-server-returns-an-unknown-error`,description:"The origin server returned an empty, unknown, or unexpected response to Cloudflare.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"exponential-backoff",agentAction:"Retry; if persistent, the origin is misbehaving and needs operator attention.",commonCauses:["Origin crashed mid-response","Origin returned malformed HTTP"],relatedStatuses:[502]}},521:{code:521,phrase:"Web Server Is Down",category:"Vendor Extension",source:"Cloudflare",rfc:null,specUrl:`${e}#error-521-web-server-is-down`,description:"The origin server refused the connection from Cloudflare. Cloudflare could not establish a TCP connection.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"exponential-backoff",agentAction:"Retry; verify origin is running and not blocking Cloudflare IPs.",commonCauses:["Origin down","Cloudflare IPs blocked at firewall"],relatedStatuses:[502,503]}},522:{code:522,phrase:"Connection Timed Out",category:"Vendor Extension",source:"Cloudflare",rfc:null,specUrl:`${e}#error-522-connection-timed-out`,description:"Cloudflare could not negotiate a TCP handshake with the origin server before timing out.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"exponential-backoff",agentAction:"Retry; investigate origin network reachability.",commonCauses:["Origin overloaded","Network partition between CF and origin"],relatedStatuses:[504]}},523:{code:523,phrase:"Origin Is Unreachable",category:"Vendor Extension",source:"Cloudflare",rfc:null,specUrl:`${e}#error-523-origin-is-unreachable`,description:"Cloudflare could not reach the origin server, commonly due to a routing/BGP issue or invalid DNS record.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"exponential-backoff",agentAction:"Retry; if persistent, check origin DNS and routing.",commonCauses:["DNS record points to wrong IP","BGP routing problem"],relatedStatuses:[530]}},524:{code:524,phrase:"A Timeout Occurred",category:"Vendor Extension",source:"Cloudflare",rfc:null,specUrl:`${e}#error-524-a-timeout-occurred`,description:"Cloudflare successfully connected and sent data to the origin, but the origin took too long to respond with an HTTP response.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"exponential-backoff",agentAction:"Retry; for long-running requests, consider an async pattern (e.g., 202 + polling).",commonCauses:["Long-running origin request exceeded the 100-second CF limit."],relatedStatuses:[504,408]}},525:{code:525,phrase:"SSL Handshake Failed",category:"Vendor Extension",source:"Cloudflare",rfc:null,specUrl:`${e}#error-525-ssl-handshake-failed`,description:"Cloudflare could not negotiate an SSL/TLS handshake with the origin server.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Operator action: align cipher suites and TLS versions between CF and origin.",commonCauses:["No common cipher suite","TLS version mismatch"],relatedStatuses:[526]}},526:{code:526,phrase:"Invalid SSL Certificate",category:"Vendor Extension",source:"Cloudflare",rfc:null,specUrl:`${e}#error-526-invalid-ssl-certificate`,description:"Cloudflare could not validate the SSL certificate on the origin web server when SSL Full (strict) mode is active.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Operator action: install a valid origin certificate or relax SSL mode.",commonCauses:["Expired or self-signed origin cert","Hostname mismatch"],relatedStatuses:[525]}},527:{code:527,phrase:"Railgun Error",category:"Vendor Extension",source:"Cloudflare",rfc:null,specUrl:`${e}#error-527-railgun-listener-to-origin`,description:"Indicates an error connecting between Cloudflare and the origin's Railgun (rwengine) server.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:true,guidance:{isRetryable:true,retryStrategy:"exponential-backoff",agentAction:"Retry; Railgun is largely deprecated in favor of Argo Smart Routing.",commonCauses:["Railgun listener unreachable."],relatedStatuses:[]}},530:{code:530,phrase:"Origin DNS Error",category:"Vendor Extension",source:"Cloudflare",rfc:null,specUrl:"https://developers.cloudflare.com/support/troubleshooting/cloudflare-errors/troubleshooting-cloudflare-1xxx-errors/",description:"A 530 response is typically returned alongside a Cloudflare 1xxx error displayed in the body, indicating an origin DNS or worker failure.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"exponential-backoff",agentAction:"Inspect the body for the embedded 1xxx code; resolve DNS or Worker error.",commonCauses:["Origin DNS resolution failure","Worker script error"],relatedStatuses:[523]}}};
+export{t as CloudflareRegistry,r as CloudflareStatus};

iana/index.cjs

+'use strict';var r={CONTINUE:100,SWITCHING_PROTOCOLS:101,PROCESSING:102,EARLY_HINTS:103,OK:200,CREATED:201,ACCEPTED:202,NON_AUTHORITATIVE_INFORMATION:203,NO_CONTENT:204,RESET_CONTENT:205,PARTIAL_CONTENT:206,MULTI_STATUS:207,ALREADY_REPORTED:208,IM_USED:226,MULTIPLE_CHOICES:300,MOVED_PERMANENTLY:301,FOUND:302,SEE_OTHER:303,NOT_MODIFIED:304,USE_PROXY:305,TEMPORARY_REDIRECT:307,PERMANENT_REDIRECT:308,BAD_REQUEST:400,UNAUTHORIZED:401,PAYMENT_REQUIRED:402,FORBIDDEN:403,NOT_FOUND:404,METHOD_NOT_ALLOWED:405,NOT_ACCEPTABLE:406,PROXY_AUTHENTICATION_REQUIRED:407,REQUEST_TIMEOUT:408,CONFLICT:409,GONE:410,LENGTH_REQUIRED:411,PRECONDITION_FAILED:412,CONTENT_TOO_LARGE:413,URI_TOO_LONG:414,UNSUPPORTED_MEDIA_TYPE:415,RANGE_NOT_SATISFIABLE:416,EXPECTATION_FAILED:417,IM_A_TEAPOT:418,MISDIRECTED_REQUEST:421,UNPROCESSABLE_CONTENT:422,LOCKED:423,FAILED_DEPENDENCY:424,TOO_EARLY:425,UPGRADE_REQUIRED:426,PRECONDITION_REQUIRED:428,TOO_MANY_REQUESTS:429,REQUEST_HEADER_FIELDS_TOO_LARGE:431,UNAVAILABLE_FOR_LEGAL_REASONS:451,INTERNAL_SERVER_ERROR:500,NOT_IMPLEMENTED:501,BAD_GATEWAY:502,SERVICE_UNAVAILABLE:503,GATEWAY_TIMEOUT:504,HTTP_VERSION_NOT_SUPPORTED:505,VARIANT_ALSO_NEGOTIATES:506,INSUFFICIENT_STORAGE:507,LOOP_DETECTED:508,NOT_EXTENDED:510,NETWORK_AUTHENTICATION_REQUIRED:511},e=t=>`https://datatracker.ietf.org/doc/html/rfc9110#section-${t}`,a={100:{code:100,phrase:"Continue",category:"Informational",source:"IANA",rfc:"RFC9110",specUrl:e("15.2.1"),description:"The initial part of a request has been received and the client should continue to send the remainder of the request, or ignore the response if the request is already complete.",expectsEmptyBody:true,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Expect",required:false,purpose:"Originating request header that triggers a 100 response."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Continue sending the request body; treat as a successful handshake.",commonCauses:["Client sent Expect: 100-continue before a large body."],relatedStatuses:[417]}},101:{code:101,phrase:"Switching Protocols",category:"Informational",source:"IANA",rfc:"RFC9110",specUrl:e("15.2.2"),description:"The server understands and is willing to comply with the client request, via the Upgrade header field, for a change in the application protocol being used on this connection.",expectsEmptyBody:true,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Upgrade",required:true,purpose:"Lists the protocol(s) being switched to."},{name:"Connection",required:true,purpose:'Must include "Upgrade".'}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Switch to the protocol named in the Upgrade header (e.g., WebSocket).",commonCauses:["Client requested protocol upgrade (WebSocket, HTTP/2 cleartext)."],relatedStatuses:[426]}},102:{code:102,phrase:"Processing",category:"Informational",source:"IANA",rfc:"RFC2518",specUrl:"https://datatracker.ietf.org/doc/html/rfc2518#section-10.1",description:"WebDAV interim response indicating that the server has accepted the complete request but has not yet completed it. Deprecated by some clients.",expectsEmptyBody:true,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:true,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Keep the connection open and wait for the final response.",commonCauses:["Long-running WebDAV operation."],relatedStatuses:[]}},103:{code:103,phrase:"Early Hints",category:"Informational",source:"IANA",rfc:"RFC8297",specUrl:"https://datatracker.ietf.org/doc/html/rfc8297#section-2",description:"Used to return some response headers before the final HTTP message, typically to allow the client to preload resources via Link headers.",expectsEmptyBody:true,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Link",required:false,purpose:"Preload/preconnect hints sent before the final response."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Begin preloading hinted resources while awaiting the final response.",commonCauses:["Server-driven preload hints to reduce page load time."],relatedStatuses:[]}},200:{code:200,phrase:"OK",category:"Success",source:"IANA",rfc:"RFC9110",specUrl:e("15.3.1"),description:"The request has succeeded. The payload sent depends on the request method.",expectsEmptyBody:false,isCacheable:"heuristic",requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Parse and use the response body.",commonCauses:["Standard successful request."],relatedStatuses:[201,204,206]}},201:{code:201,phrase:"Created",category:"Success",source:"IANA",rfc:"RFC9110",specUrl:e("15.3.2"),description:"The request has been fulfilled and has resulted in one or more new resources being created. The primary resource URI is given by Location.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Location",required:false,purpose:"URI of the newly created resource."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Read the Location header for the new resource URI.",commonCauses:["Successful POST or PUT that created a resource."],relatedStatuses:[200,202]}},202:{code:202,phrase:"Accepted",category:"Success",source:"IANA",rfc:"RFC9110",specUrl:e("15.3.3"),description:"The request has been accepted for processing, but the processing has not been completed. The request might or might not be eventually acted upon.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Poll the indicated status endpoint or wait for an async callback.",commonCauses:["Async job submission, batch processing."],relatedStatuses:[201,303]}},203:{code:203,phrase:"Non-Authoritative Information",category:"Success",source:"IANA",rfc:"RFC9110",specUrl:e("15.3.4"),description:"The request was successful but the enclosed payload has been modified by a transforming proxy from that of the origin server.",expectsEmptyBody:false,isCacheable:"heuristic",requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Treat as 200 OK but be aware the body may have been transformed by an intermediary.",commonCauses:["Transforming proxy modified the response."],relatedStatuses:[200]}},204:{code:204,phrase:"No Content",category:"Success",source:"IANA",rfc:"RFC9110",specUrl:e("15.3.5"),description:"The server has successfully fulfilled the request and there is no additional content to send in the response payload body.",expectsEmptyBody:true,isCacheable:"heuristic",requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Do not attempt to parse a body; treat as success.",commonCauses:["Successful DELETE or PUT/PATCH that returns no body."],relatedStatuses:[200,205]}},205:{code:205,phrase:"Reset Content",category:"Success",source:"IANA",rfc:"RFC9110",specUrl:e("15.3.6"),description:"The server has fulfilled the request and desires that the user agent reset the document view which caused the request to be sent.",expectsEmptyBody:true,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Clear the originating form or input view.",commonCauses:["Form submission that should reset on success."],relatedStatuses:[204]}},206:{code:206,phrase:"Partial Content",category:"Success",source:"IANA",rfc:"RFC9110",specUrl:e("15.3.7"),description:"The server is successfully fulfilling a range request for the target resource by transferring one or more parts of the selected representation.",expectsEmptyBody:false,isCacheable:"heuristic",requiresAuth:false,safeForMethods:["GET","HEAD"],relatedHeaders:[{name:"Content-Range",required:true,purpose:"Indicates which byte range is in the body."},{name:"Accept-Ranges",required:false,purpose:"Indicates supported range units."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Assemble the byte range with previously fetched parts; resume support.",commonCauses:["Range request for video, large file, or resumable download."],relatedStatuses:[200,416]}},207:{code:207,phrase:"Multi-Status",category:"Success",source:"IANA",rfc:"RFC4918",specUrl:"https://datatracker.ietf.org/doc/html/rfc4918#section-11.1",description:"WebDAV: provides status for multiple independent operations in a single response (multistatus XML).",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Parse the multistatus XML body for per-resource status codes.",commonCauses:["WebDAV PROPFIND, PROPPATCH, COPY, MOVE, DELETE on collections."],relatedStatuses:[208]}},208:{code:208,phrase:"Already Reported",category:"Success",source:"IANA",rfc:"RFC5842",specUrl:"https://datatracker.ietf.org/doc/html/rfc5842#section-7.1",description:"WebDAV: used inside a 207 Multi-Status response to avoid repeatedly enumerating internal members of multiple bindings to the same collection.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Treat as already-enumerated; do not re-fetch.",commonCauses:["WebDAV bindings already reported in the same multistatus."],relatedStatuses:[207]}},226:{code:226,phrase:"IM Used",category:"Success",source:"IANA",rfc:"RFC3229",specUrl:"https://datatracker.ietf.org/doc/html/rfc3229#section-10.4.1",description:"The server has fulfilled a GET request for the resource, and the response is a representation of the result of one or more instance-manipulations applied to the current instance.",expectsEmptyBody:false,isCacheable:"heuristic",requiresAuth:false,safeForMethods:["GET"],relatedHeaders:[{name:"IM",required:false,purpose:"Instance manipulation applied."},{name:"Delta-Base",required:false,purpose:"Base entity tag for delta encoding."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Apply the delta to the cached representation.",commonCauses:["Delta-encoded HTTP response."],relatedStatuses:[200]}},300:{code:300,phrase:"Multiple Choices",category:"Redirection",source:"IANA",rfc:"RFC9110",specUrl:e("15.4.1"),description:"The target resource has more than one representation, each with its own more specific identifier, and information about the alternatives is provided.",expectsEmptyBody:false,isCacheable:"heuristic",requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Location",required:false,purpose:"Server-preferred alternative URI."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Pick a representation from the listed alternatives or follow Location if provided.",commonCauses:["Content negotiation with multiple acceptable variants."],relatedStatuses:[301,302,303]}},301:{code:301,phrase:"Moved Permanently",category:"Redirection",source:"IANA",rfc:"RFC9110",specUrl:e("15.4.2"),description:"The target resource has been assigned a new permanent URI and any future references to this resource ought to use the enclosed URI.",expectsEmptyBody:false,isCacheable:"heuristic",requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Location",required:true,purpose:"New permanent URI."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Follow Location; update bookmarks/links to the new URI.",commonCauses:["Permanent URL change, domain migration, HTTPS upgrade."],relatedStatuses:[308,302]}},302:{code:302,phrase:"Found",category:"Redirection",source:"IANA",rfc:"RFC9110",specUrl:e("15.4.3"),description:"The target resource resides temporarily under a different URI. The client should continue to use the original request URI for future requests.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Location",required:true,purpose:"Temporary URI."}],aliases:["Moved Temporarily"],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Follow Location for this request only; do not cache the redirect.",commonCauses:["Temporary redirect, post-login redirect."],relatedStatuses:[303,307]}},303:{code:303,phrase:"See Other",category:"Redirection",source:"IANA",rfc:"RFC9110",specUrl:e("15.4.4"),description:"The server is redirecting the user agent to a different resource, as indicated by Location, that is intended to provide an indirect response to the original request.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Location",required:true,purpose:"Target URI to GET."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Issue a GET to Location regardless of the original method.",commonCauses:["Post/Redirect/Get pattern after form submission."],relatedStatuses:[302,307]}},304:{code:304,phrase:"Not Modified",category:"Redirection",source:"IANA",rfc:"RFC9110",specUrl:e("15.4.5"),description:"Indicates that the conditional request would have resulted in a 200 OK response if it were not for the fact that the condition evaluated to false.",expectsEmptyBody:true,isCacheable:false,requiresAuth:false,safeForMethods:["GET","HEAD"],relatedHeaders:[{name:"ETag",required:false,purpose:"Validator matching the cached representation."},{name:"Cache-Control",required:false,purpose:"Freshness directives."},{name:"Vary",required:false,purpose:"Headers that affected selection."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Serve from the local cache; the cached representation is still fresh.",commonCauses:["Conditional GET with If-None-Match or If-Modified-Since matched."],relatedStatuses:[200,412]}},305:{code:305,phrase:"Use Proxy",category:"Redirection",source:"IANA",rfc:"RFC9110",specUrl:e("15.4.6"),description:"Deprecated. The requested resource must be accessed through a specified proxy.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:true,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Ignore; modern clients must not honor 305 for security reasons.",commonCauses:["Legacy proxy configuration."],relatedStatuses:[]}},307:{code:307,phrase:"Temporary Redirect",category:"Redirection",source:"IANA",rfc:"RFC9110",specUrl:e("15.4.8"),description:"The target resource resides temporarily under a different URI and the user agent MUST NOT change the request method when following the redirect.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Location",required:true,purpose:"Temporary URI."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Follow Location with the same method and body.",commonCauses:["Temporary redirect where method preservation matters (e.g., POST)."],relatedStatuses:[302,308]}},308:{code:308,phrase:"Permanent Redirect",category:"Redirection",source:"IANA",rfc:"RFC9110",specUrl:e("15.4.9"),description:"The target resource has been assigned a new permanent URI and the user agent MUST NOT change the request method when following the redirect.",expectsEmptyBody:false,isCacheable:"heuristic",requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Location",required:true,purpose:"New permanent URI."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Follow Location with the same method; update stored references.",commonCauses:["Permanent move where method preservation matters."],relatedStatuses:[301,307]}},400:{code:400,phrase:"Bad Request",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.1"),description:"The server cannot or will not process the request due to something that is perceived to be a client error (e.g., malformed syntax, invalid framing).",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Fix the request payload or syntax; do not retry as-is.",commonCauses:["Malformed JSON","Missing required field","Invalid header syntax"],relatedStatuses:[422,415]}},401:{code:401,phrase:"Unauthorized",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.2"),description:"The request has not been applied because it lacks valid authentication credentials for the target resource.",expectsEmptyBody:false,isCacheable:false,requiresAuth:true,safeForMethods:"all",relatedHeaders:[{name:"WWW-Authenticate",required:true,purpose:"Challenge describing the auth scheme."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Acquire valid credentials and retry with an Authorization header.",commonCauses:["Missing or expired token","Wrong credentials","Token revoked"],relatedStatuses:[403,407]}},402:{code:402,phrase:"Payment Required",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.3"),description:"Reserved for future use. Originally intended for digital payment systems.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Surface payment/billing requirement to the user; do not auto-retry.",commonCauses:["API quota exhausted on paid tier","Subscription expired"],relatedStatuses:[403,429]}},403:{code:403,phrase:"Forbidden",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.4"),description:"The server understood the request but refuses to authorize it. Re-authenticating will not help.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Do not retry; the principal lacks permission for this resource.",commonCauses:["Insufficient role/scope","IP blocked","CSRF check failed"],relatedStatuses:[401,451]}},404:{code:404,phrase:"Not Found",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.5"),description:"The origin server did not find a current representation for the target resource or is not willing to disclose that one exists.",expectsEmptyBody:false,isCacheable:"heuristic",requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Verify the URL; do not retry unless the resource is expected to appear later.",commonCauses:["Typo in URL","Resource deleted","Privacy-preserving hide of 403"],relatedStatuses:[410,403]}},405:{code:405,phrase:"Method Not Allowed",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.6"),description:"The method received in the request-line is known by the origin server but not supported by the target resource.",expectsEmptyBody:false,isCacheable:"heuristic",requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Allow",required:true,purpose:"Lists the methods supported by the target resource."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Inspect Allow header and reissue with a permitted method.",commonCauses:["Wrong HTTP verb for the endpoint."],relatedStatuses:[501]}},406:{code:406,phrase:"Not Acceptable",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.7"),description:"The target resource does not have a current representation that would be acceptable to the user agent according to the proactive negotiation header fields.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Accept",required:false,purpose:"Originating preference header."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Relax Accept/Accept-Language constraints and retry.",commonCauses:["No representation matches the client's Accept headers."],relatedStatuses:[415]}},407:{code:407,phrase:"Proxy Authentication Required",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.8"),description:"Similar to 401 but indicates that the client needs to authenticate itself in order to use a proxy.",expectsEmptyBody:false,isCacheable:false,requiresAuth:true,safeForMethods:"all",relatedHeaders:[{name:"Proxy-Authenticate",required:true,purpose:"Proxy auth challenge."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Supply Proxy-Authorization and retry.",commonCauses:["Corporate proxy requiring authentication."],relatedStatuses:[401]}},408:{code:408,phrase:"Request Timeout",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.9"),description:"The server did not receive a complete request message within the time that it was prepared to wait.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"exponential-backoff",agentAction:"Retry the request with backoff; consider increasing client timeout.",commonCauses:["Slow client","Network congestion","Idle keep-alive connection closed"],relatedStatuses:[504]}},409:{code:409,phrase:"Conflict",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.10"),description:"The request could not be completed due to a conflict with the current state of the target resource.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Re-read the current resource state and resolve the conflict before resubmitting.",commonCauses:["Concurrent edit collision","Duplicate resource creation","Version mismatch"],relatedStatuses:[412,428]}},410:{code:410,phrase:"Gone",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.11"),description:"Access to the target resource is no longer available at the origin server and this condition is likely to be permanent.",expectsEmptyBody:false,isCacheable:"heuristic",requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Remove any cached references; do not retry.",commonCauses:["Permanently deleted resource."],relatedStatuses:[404]}},411:{code:411,phrase:"Length Required",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.12"),description:"The server refuses to accept the request without a defined Content-Length.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:["POST","PUT","PATCH"],relatedHeaders:[{name:"Content-Length",required:true,purpose:"Length of the request body in octets."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Add Content-Length and retry.",commonCauses:["Chunked transfer rejected by server."],relatedStatuses:[]}},412:{code:412,phrase:"Precondition Failed",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.13"),description:"One or more conditions given in the request header fields evaluated to false when tested on the server.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"If-Match",required:false,purpose:"Originating precondition."},{name:"If-Unmodified-Since",required:false,purpose:"Originating precondition."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Re-fetch current ETag/Last-Modified and retry with the new validator.",commonCauses:["Stale If-Match","Optimistic concurrency control mismatch"],relatedStatuses:[409,428]}},413:{code:413,phrase:"Content Too Large",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.14"),description:"The server is refusing to process a request because the request content is larger than the server is willing or able to process.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:["POST","PUT","PATCH"],relatedHeaders:[{name:"Retry-After",required:false,purpose:"Indicates when the condition may be temporary."}],aliases:["Payload Too Large","Request Entity Too Large"],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Reduce body size, chunk the upload, or use a different endpoint.",commonCauses:["Upload exceeds server limit."],relatedStatuses:[]}},414:{code:414,phrase:"URI Too Long",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.15"),description:"The server is refusing to service the request because the request-target is longer than the server is willing to interpret.",expectsEmptyBody:false,isCacheable:"heuristic",requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:["Request-URI Too Long"],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Shorten the URL; move parameters into a POST body.",commonCauses:["Excessive query string","Loop generating long redirect URI"],relatedStatuses:[]}},415:{code:415,phrase:"Unsupported Media Type",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.16"),description:"The server is refusing to service the request because the content is in a format not supported by this method on the target resource.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:["POST","PUT","PATCH"],relatedHeaders:[{name:"Accept",required:false,purpose:"Indicates supported response types."},{name:"Accept-Encoding",required:false,purpose:"Indicates supported encodings."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Set Content-Type to a supported value and retry.",commonCauses:["Wrong Content-Type","Unsupported encoding"],relatedStatuses:[406]}},416:{code:416,phrase:"Range Not Satisfiable",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.17"),description:"None of the ranges in the request's Range header field overlap the current extent of the selected resource, or the set of ranges requested has been rejected.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:["GET","HEAD"],relatedHeaders:[{name:"Content-Range",required:false,purpose:"Total size of the representation."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Re-check the resource length and request a valid range.",commonCauses:["Range beyond resource length."],relatedStatuses:[206]}},417:{code:417,phrase:"Expectation Failed",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.18"),description:"The expectation given in the request's Expect header field could not be met by at least one of the inbound servers.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Remove the Expect header and retry.",commonCauses:["Server does not support Expect: 100-continue."],relatedStatuses:[100]}},418:{code:418,phrase:"I'm a teapot",category:"Client Error",source:"IANA",rfc:"RFC2324",specUrl:"https://datatracker.ietf.org/doc/html/rfc2324#section-2.3.2",description:"Any attempt to brew coffee with a teapot should result in the error code 418 I'm a teapot. A joke status from the Hyper Text Coffee Pot Control Protocol.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Treat as a humorous easter egg or anti-bot signal; do not retry.",commonCauses:["Server is signaling a refusal humorously."],relatedStatuses:[]}},421:{code:421,phrase:"Misdirected Request",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.20"),description:"The request was directed at a server that is not able to produce a response. This can be sent by a server that is not configured to produce responses for the combination of scheme and authority included in the request URI.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"immediate",agentAction:"Re-resolve the host and open a new connection before retrying.",commonCauses:["HTTP/2 connection coalescing to wrong origin."],relatedStatuses:[]}},422:{code:422,phrase:"Unprocessable Content",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.21"),description:"The server understands the content type of the request content and the syntax of the request content is correct, but it was unable to process the contained instructions.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:["Unprocessable Entity"],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Validate semantic constraints (e.g., schema validation errors) and resubmit.",commonCauses:["Schema validation failure","Business rule violation"],relatedStatuses:[400]}},423:{code:423,phrase:"Locked",category:"Client Error",source:"IANA",rfc:"RFC4918",specUrl:"https://datatracker.ietf.org/doc/html/rfc4918#section-11.3",description:"WebDAV: the source or destination resource is locked.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"exponential-backoff",agentAction:"Acquire the lock or wait for it to release, then retry.",commonCauses:["WebDAV resource locked by another client."],relatedStatuses:[424]}},424:{code:424,phrase:"Failed Dependency",category:"Client Error",source:"IANA",rfc:"RFC4918",specUrl:"https://datatracker.ietf.org/doc/html/rfc4918#section-11.4",description:"WebDAV: the method could not be performed on the resource because the requested action depended on another action which failed.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Resolve the failing prerequisite action first.",commonCauses:["Prior WebDAV operation in the same request failed."],relatedStatuses:[423]}},425:{code:425,phrase:"Too Early",category:"Client Error",source:"IANA",rfc:"RFC8470",specUrl:"https://datatracker.ietf.org/doc/html/rfc8470#section-5.2",description:"Indicates that the server is unwilling to risk processing a request that might be replayed (e.g., TLS 1.3 early data).",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Early-Data",required:false,purpose:"Indicates the request was sent in TLS early data."}],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"immediate",agentAction:"Retry the request after the TLS handshake completes.",commonCauses:["Request sent in TLS 1.3 0-RTT early data."],relatedStatuses:[]}},426:{code:426,phrase:"Upgrade Required",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.22"),description:"The server refuses to perform the request using the current protocol but might be willing to do so after the client upgrades to a different protocol.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Upgrade",required:true,purpose:"Protocols the server is willing to switch to."},{name:"Connection",required:true,purpose:'Must include "Upgrade".'}],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"immediate",agentAction:"Upgrade to the protocol indicated in Upgrade and retry.",commonCauses:["Server requires HTTPS or HTTP/2."],relatedStatuses:[101]}},428:{code:428,phrase:"Precondition Required",category:"Client Error",source:"IANA",rfc:"RFC6585",specUrl:"https://datatracker.ietf.org/doc/html/rfc6585#section-3",description:"The origin server requires the request to be conditional. Intended to prevent the lost update problem.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Add If-Match or If-Unmodified-Since and retry.",commonCauses:["Server enforces optimistic concurrency control."],relatedStatuses:[412]}},429:{code:429,phrase:"Too Many Requests",category:"Client Error",source:"IANA",rfc:"RFC6585",specUrl:"https://datatracker.ietf.org/doc/html/rfc6585#section-4",description:'The user has sent too many requests in a given amount of time ("rate limiting").',expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Retry-After",required:false,purpose:"Indicates how long to wait before retrying."}],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"respect-retry-after",agentAction:"Wait the duration in Retry-After (or back off exponentially) and retry.",commonCauses:["Rate limit exceeded."],relatedStatuses:[503,509]}},431:{code:431,phrase:"Request Header Fields Too Large",category:"Client Error",source:"IANA",rfc:"RFC6585",specUrl:"https://datatracker.ietf.org/doc/html/rfc6585#section-5",description:"The server is unwilling to process the request because its header fields are too large.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Trim cookies/headers and retry.",commonCauses:["Oversized cookie jar","Long Authorization token"],relatedStatuses:[]}},451:{code:451,phrase:"Unavailable For Legal Reasons",category:"Client Error",source:"IANA",rfc:"RFC7725",specUrl:"https://datatracker.ietf.org/doc/html/rfc7725#section-3",description:"The server is denying access to the resource as a consequence of a legal demand.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Surface the legal blockage to the user; do not retry.",commonCauses:["Court order","Government censorship","DMCA takedown"],relatedStatuses:[403]}},500:{code:500,phrase:"Internal Server Error",category:"Server Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.6.1"),description:"The server encountered an unexpected condition that prevented it from fulfilling the request.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"exponential-backoff",agentAction:"Retry idempotent requests with backoff; report to the operator if persistent.",commonCauses:["Unhandled exception","Database failure","Misconfiguration"],relatedStatuses:[502,503]}},501:{code:501,phrase:"Not Implemented",category:"Server Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.6.2"),description:"The server does not support the functionality required to fulfill the request.",expectsEmptyBody:false,isCacheable:"heuristic",requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Use a different method or endpoint; this feature is not supported.",commonCauses:["Server lacks support for the requested method."],relatedStatuses:[405]}},502:{code:502,phrase:"Bad Gateway",category:"Server Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.6.3"),description:"The server, while acting as a gateway or proxy, received an invalid response from an inbound server.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"exponential-backoff",agentAction:"Retry with backoff; the upstream is likely transiently unhealthy.",commonCauses:["Upstream returned malformed response","Origin briefly down"],relatedStatuses:[503,504]}},503:{code:503,phrase:"Service Unavailable",category:"Server Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.6.4"),description:"The server is currently unable to handle the request due to a temporary overload or scheduled maintenance.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Retry-After",required:false,purpose:"Indicates how long the service is expected to be unavailable."}],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"respect-retry-after",agentAction:"Respect Retry-After if present; otherwise back off exponentially.",commonCauses:["Overload","Scheduled maintenance","Circuit breaker open"],relatedStatuses:[429,502,504]}},504:{code:504,phrase:"Gateway Timeout",category:"Server Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.6.5"),description:"The server, while acting as a gateway or proxy, did not receive a timely response from an upstream server.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"exponential-backoff",agentAction:"Retry with backoff; consider increasing the upstream timeout.",commonCauses:["Slow upstream","Network partition"],relatedStatuses:[408,502]}},505:{code:505,phrase:"HTTP Version Not Supported",category:"Server Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.6.6"),description:"The server does not support, or refuses to support, the major version of HTTP that was used in the request.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Downgrade or upgrade to a supported HTTP version and retry.",commonCauses:["Client speaks HTTP version the server has disabled."],relatedStatuses:[426]}},506:{code:506,phrase:"Variant Also Negotiates",category:"Server Error",source:"IANA",rfc:"RFC2295",specUrl:"https://datatracker.ietf.org/doc/html/rfc2295#section-8.1",description:"Transparent content negotiation for the request results in a circular reference.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Server-side configuration bug; report to the operator.",commonCauses:["Misconfigured content negotiation chain."],relatedStatuses:[]}},507:{code:507,phrase:"Insufficient Storage",category:"Server Error",source:"IANA",rfc:"RFC4918",specUrl:"https://datatracker.ietf.org/doc/html/rfc4918#section-11.5",description:"WebDAV: the method could not be performed on the resource because the server is unable to store the representation needed to successfully complete the request.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"exponential-backoff",agentAction:"Retry later or reduce payload size; storage is full upstream.",commonCauses:["Disk full on server."],relatedStatuses:[413]}},508:{code:508,phrase:"Loop Detected",category:"Server Error",source:"IANA",rfc:"RFC5842",specUrl:"https://datatracker.ietf.org/doc/html/rfc5842#section-7.2",description:"WebDAV: the server terminated an operation because it encountered an infinite loop while processing a request with Depth: infinity.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Restructure the request to avoid the cycle.",commonCauses:["Cyclic WebDAV bindings."],relatedStatuses:[]}},510:{code:510,phrase:"Not Extended",category:"Server Error",source:"IANA",rfc:"RFC2774",specUrl:"https://datatracker.ietf.org/doc/html/rfc2774#section-7",description:"Further extensions to the request are required for the server to fulfill it.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:true,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Add the required HTTP extension declarations and retry.",commonCauses:["Server requires HTTP extension framework."],relatedStatuses:[]}},511:{code:511,phrase:"Network Authentication Required",category:"Server Error",source:"IANA",rfc:"RFC6585",specUrl:"https://datatracker.ietf.org/doc/html/rfc6585#section-6",description:"The client needs to authenticate to gain network access. Intended for captive portals.",expectsEmptyBody:false,isCacheable:false,requiresAuth:true,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"immediate",agentAction:"Complete the captive portal flow, then retry.",commonCauses:["Public Wi-Fi captive portal."],relatedStatuses:[401]}}};
+exports.IanaRegistry=a;exports.IanaStatus=r;

iana/index.d.cts

+import { c as HttpStatusMetadata } from '../types-D9bAZ7ge.cjs';
+
+declare const IanaStatus: {
+    readonly CONTINUE: 100;
+    readonly SWITCHING_PROTOCOLS: 101;
+    readonly PROCESSING: 102;
+    readonly EARLY_HINTS: 103;
+    readonly OK: 200;
+    readonly CREATED: 201;
+    readonly ACCEPTED: 202;
+    readonly NON_AUTHORITATIVE_INFORMATION: 203;
+    readonly NO_CONTENT: 204;
+    readonly RESET_CONTENT: 205;
+    readonly PARTIAL_CONTENT: 206;
+    readonly MULTI_STATUS: 207;
+    readonly ALREADY_REPORTED: 208;
+    readonly IM_USED: 226;
+    readonly MULTIPLE_CHOICES: 300;
+    readonly MOVED_PERMANENTLY: 301;
+    readonly FOUND: 302;
+    readonly SEE_OTHER: 303;
+    readonly NOT_MODIFIED: 304;
+    readonly USE_PROXY: 305;
+    readonly TEMPORARY_REDIRECT: 307;
+    readonly PERMANENT_REDIRECT: 308;
+    readonly BAD_REQUEST: 400;
+    readonly UNAUTHORIZED: 401;
+    readonly PAYMENT_REQUIRED: 402;
+    readonly FORBIDDEN: 403;
+    readonly NOT_FOUND: 404;
+    readonly METHOD_NOT_ALLOWED: 405;
+    readonly NOT_ACCEPTABLE: 406;
+    readonly PROXY_AUTHENTICATION_REQUIRED: 407;
+    readonly REQUEST_TIMEOUT: 408;
+    readonly CONFLICT: 409;
+    readonly GONE: 410;
+    readonly LENGTH_REQUIRED: 411;
+    readonly PRECONDITION_FAILED: 412;
+    readonly CONTENT_TOO_LARGE: 413;
+    readonly URI_TOO_LONG: 414;
+    readonly UNSUPPORTED_MEDIA_TYPE: 415;
+    readonly RANGE_NOT_SATISFIABLE: 416;
+    readonly EXPECTATION_FAILED: 417;
+    readonly IM_A_TEAPOT: 418;
+    readonly MISDIRECTED_REQUEST: 421;
+    readonly UNPROCESSABLE_CONTENT: 422;
+    readonly LOCKED: 423;
+    readonly FAILED_DEPENDENCY: 424;
+    readonly TOO_EARLY: 425;
+    readonly UPGRADE_REQUIRED: 426;
+    readonly PRECONDITION_REQUIRED: 428;
+    readonly TOO_MANY_REQUESTS: 429;
+    readonly REQUEST_HEADER_FIELDS_TOO_LARGE: 431;
+    readonly UNAVAILABLE_FOR_LEGAL_REASONS: 451;
+    readonly INTERNAL_SERVER_ERROR: 500;
+    readonly NOT_IMPLEMENTED: 501;
+    readonly BAD_GATEWAY: 502;
+    readonly SERVICE_UNAVAILABLE: 503;
+    readonly GATEWAY_TIMEOUT: 504;
+    readonly HTTP_VERSION_NOT_SUPPORTED: 505;
+    readonly VARIANT_ALSO_NEGOTIATES: 506;
+    readonly INSUFFICIENT_STORAGE: 507;
+    readonly LOOP_DETECTED: 508;
+    readonly NOT_EXTENDED: 510;
+    readonly NETWORK_AUTHENTICATION_REQUIRED: 511;
+};
+type IanaStatusCode = (typeof IanaStatus)[keyof typeof IanaStatus];
+type IanaStatusName = keyof typeof IanaStatus;
+declare const IanaRegistry: Readonly<Record<IanaStatusCode, HttpStatusMetadata>>;
+
+export { IanaRegistry, IanaStatus, type IanaStatusCode, type IanaStatusName };

iana/index.d.ts

+import { c as HttpStatusMetadata } from '../types-D9bAZ7ge.js';
+
+declare const IanaStatus: {
+    readonly CONTINUE: 100;
+    readonly SWITCHING_PROTOCOLS: 101;
+    readonly PROCESSING: 102;
+    readonly EARLY_HINTS: 103;
+    readonly OK: 200;
+    readonly CREATED: 201;
+    readonly ACCEPTED: 202;
+    readonly NON_AUTHORITATIVE_INFORMATION: 203;
+    readonly NO_CONTENT: 204;
+    readonly RESET_CONTENT: 205;
+    readonly PARTIAL_CONTENT: 206;
+    readonly MULTI_STATUS: 207;
+    readonly ALREADY_REPORTED: 208;
+    readonly IM_USED: 226;
+    readonly MULTIPLE_CHOICES: 300;
+    readonly MOVED_PERMANENTLY: 301;
+    readonly FOUND: 302;
+    readonly SEE_OTHER: 303;
+    readonly NOT_MODIFIED: 304;
+    readonly USE_PROXY: 305;
+    readonly TEMPORARY_REDIRECT: 307;
+    readonly PERMANENT_REDIRECT: 308;
+    readonly BAD_REQUEST: 400;
+    readonly UNAUTHORIZED: 401;
+    readonly PAYMENT_REQUIRED: 402;
+    readonly FORBIDDEN: 403;
+    readonly NOT_FOUND: 404;
+    readonly METHOD_NOT_ALLOWED: 405;
+    readonly NOT_ACCEPTABLE: 406;
+    readonly PROXY_AUTHENTICATION_REQUIRED: 407;
+    readonly REQUEST_TIMEOUT: 408;
+    readonly CONFLICT: 409;
+    readonly GONE: 410;
+    readonly LENGTH_REQUIRED: 411;
+    readonly PRECONDITION_FAILED: 412;
+    readonly CONTENT_TOO_LARGE: 413;
+    readonly URI_TOO_LONG: 414;
+    readonly UNSUPPORTED_MEDIA_TYPE: 415;
+    readonly RANGE_NOT_SATISFIABLE: 416;
+    readonly EXPECTATION_FAILED: 417;
+    readonly IM_A_TEAPOT: 418;
+    readonly MISDIRECTED_REQUEST: 421;
+    readonly UNPROCESSABLE_CONTENT: 422;
+    readonly LOCKED: 423;
+    readonly FAILED_DEPENDENCY: 424;
+    readonly TOO_EARLY: 425;
+    readonly UPGRADE_REQUIRED: 426;
+    readonly PRECONDITION_REQUIRED: 428;
+    readonly TOO_MANY_REQUESTS: 429;
+    readonly REQUEST_HEADER_FIELDS_TOO_LARGE: 431;
+    readonly UNAVAILABLE_FOR_LEGAL_REASONS: 451;
+    readonly INTERNAL_SERVER_ERROR: 500;
+    readonly NOT_IMPLEMENTED: 501;
+    readonly BAD_GATEWAY: 502;
+    readonly SERVICE_UNAVAILABLE: 503;
+    readonly GATEWAY_TIMEOUT: 504;
+    readonly HTTP_VERSION_NOT_SUPPORTED: 505;
+    readonly VARIANT_ALSO_NEGOTIATES: 506;
+    readonly INSUFFICIENT_STORAGE: 507;
+    readonly LOOP_DETECTED: 508;
+    readonly NOT_EXTENDED: 510;
+    readonly NETWORK_AUTHENTICATION_REQUIRED: 511;
+};
+type IanaStatusCode = (typeof IanaStatus)[keyof typeof IanaStatus];
+type IanaStatusName = keyof typeof IanaStatus;
+declare const IanaRegistry: Readonly<Record<IanaStatusCode, HttpStatusMetadata>>;
+
+export { IanaRegistry, IanaStatus, type IanaStatusCode, type IanaStatusName };

iana/index.js

+var r={CONTINUE:100,SWITCHING_PROTOCOLS:101,PROCESSING:102,EARLY_HINTS:103,OK:200,CREATED:201,ACCEPTED:202,NON_AUTHORITATIVE_INFORMATION:203,NO_CONTENT:204,RESET_CONTENT:205,PARTIAL_CONTENT:206,MULTI_STATUS:207,ALREADY_REPORTED:208,IM_USED:226,MULTIPLE_CHOICES:300,MOVED_PERMANENTLY:301,FOUND:302,SEE_OTHER:303,NOT_MODIFIED:304,USE_PROXY:305,TEMPORARY_REDIRECT:307,PERMANENT_REDIRECT:308,BAD_REQUEST:400,UNAUTHORIZED:401,PAYMENT_REQUIRED:402,FORBIDDEN:403,NOT_FOUND:404,METHOD_NOT_ALLOWED:405,NOT_ACCEPTABLE:406,PROXY_AUTHENTICATION_REQUIRED:407,REQUEST_TIMEOUT:408,CONFLICT:409,GONE:410,LENGTH_REQUIRED:411,PRECONDITION_FAILED:412,CONTENT_TOO_LARGE:413,URI_TOO_LONG:414,UNSUPPORTED_MEDIA_TYPE:415,RANGE_NOT_SATISFIABLE:416,EXPECTATION_FAILED:417,IM_A_TEAPOT:418,MISDIRECTED_REQUEST:421,UNPROCESSABLE_CONTENT:422,LOCKED:423,FAILED_DEPENDENCY:424,TOO_EARLY:425,UPGRADE_REQUIRED:426,PRECONDITION_REQUIRED:428,TOO_MANY_REQUESTS:429,REQUEST_HEADER_FIELDS_TOO_LARGE:431,UNAVAILABLE_FOR_LEGAL_REASONS:451,INTERNAL_SERVER_ERROR:500,NOT_IMPLEMENTED:501,BAD_GATEWAY:502,SERVICE_UNAVAILABLE:503,GATEWAY_TIMEOUT:504,HTTP_VERSION_NOT_SUPPORTED:505,VARIANT_ALSO_NEGOTIATES:506,INSUFFICIENT_STORAGE:507,LOOP_DETECTED:508,NOT_EXTENDED:510,NETWORK_AUTHENTICATION_REQUIRED:511},e=t=>`https://datatracker.ietf.org/doc/html/rfc9110#section-${t}`,a={100:{code:100,phrase:"Continue",category:"Informational",source:"IANA",rfc:"RFC9110",specUrl:e("15.2.1"),description:"The initial part of a request has been received and the client should continue to send the remainder of the request, or ignore the response if the request is already complete.",expectsEmptyBody:true,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Expect",required:false,purpose:"Originating request header that triggers a 100 response."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Continue sending the request body; treat as a successful handshake.",commonCauses:["Client sent Expect: 100-continue before a large body."],relatedStatuses:[417]}},101:{code:101,phrase:"Switching Protocols",category:"Informational",source:"IANA",rfc:"RFC9110",specUrl:e("15.2.2"),description:"The server understands and is willing to comply with the client request, via the Upgrade header field, for a change in the application protocol being used on this connection.",expectsEmptyBody:true,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Upgrade",required:true,purpose:"Lists the protocol(s) being switched to."},{name:"Connection",required:true,purpose:'Must include "Upgrade".'}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Switch to the protocol named in the Upgrade header (e.g., WebSocket).",commonCauses:["Client requested protocol upgrade (WebSocket, HTTP/2 cleartext)."],relatedStatuses:[426]}},102:{code:102,phrase:"Processing",category:"Informational",source:"IANA",rfc:"RFC2518",specUrl:"https://datatracker.ietf.org/doc/html/rfc2518#section-10.1",description:"WebDAV interim response indicating that the server has accepted the complete request but has not yet completed it. Deprecated by some clients.",expectsEmptyBody:true,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:true,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Keep the connection open and wait for the final response.",commonCauses:["Long-running WebDAV operation."],relatedStatuses:[]}},103:{code:103,phrase:"Early Hints",category:"Informational",source:"IANA",rfc:"RFC8297",specUrl:"https://datatracker.ietf.org/doc/html/rfc8297#section-2",description:"Used to return some response headers before the final HTTP message, typically to allow the client to preload resources via Link headers.",expectsEmptyBody:true,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Link",required:false,purpose:"Preload/preconnect hints sent before the final response."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Begin preloading hinted resources while awaiting the final response.",commonCauses:["Server-driven preload hints to reduce page load time."],relatedStatuses:[]}},200:{code:200,phrase:"OK",category:"Success",source:"IANA",rfc:"RFC9110",specUrl:e("15.3.1"),description:"The request has succeeded. The payload sent depends on the request method.",expectsEmptyBody:false,isCacheable:"heuristic",requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Parse and use the response body.",commonCauses:["Standard successful request."],relatedStatuses:[201,204,206]}},201:{code:201,phrase:"Created",category:"Success",source:"IANA",rfc:"RFC9110",specUrl:e("15.3.2"),description:"The request has been fulfilled and has resulted in one or more new resources being created. The primary resource URI is given by Location.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Location",required:false,purpose:"URI of the newly created resource."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Read the Location header for the new resource URI.",commonCauses:["Successful POST or PUT that created a resource."],relatedStatuses:[200,202]}},202:{code:202,phrase:"Accepted",category:"Success",source:"IANA",rfc:"RFC9110",specUrl:e("15.3.3"),description:"The request has been accepted for processing, but the processing has not been completed. The request might or might not be eventually acted upon.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Poll the indicated status endpoint or wait for an async callback.",commonCauses:["Async job submission, batch processing."],relatedStatuses:[201,303]}},203:{code:203,phrase:"Non-Authoritative Information",category:"Success",source:"IANA",rfc:"RFC9110",specUrl:e("15.3.4"),description:"The request was successful but the enclosed payload has been modified by a transforming proxy from that of the origin server.",expectsEmptyBody:false,isCacheable:"heuristic",requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Treat as 200 OK but be aware the body may have been transformed by an intermediary.",commonCauses:["Transforming proxy modified the response."],relatedStatuses:[200]}},204:{code:204,phrase:"No Content",category:"Success",source:"IANA",rfc:"RFC9110",specUrl:e("15.3.5"),description:"The server has successfully fulfilled the request and there is no additional content to send in the response payload body.",expectsEmptyBody:true,isCacheable:"heuristic",requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Do not attempt to parse a body; treat as success.",commonCauses:["Successful DELETE or PUT/PATCH that returns no body."],relatedStatuses:[200,205]}},205:{code:205,phrase:"Reset Content",category:"Success",source:"IANA",rfc:"RFC9110",specUrl:e("15.3.6"),description:"The server has fulfilled the request and desires that the user agent reset the document view which caused the request to be sent.",expectsEmptyBody:true,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Clear the originating form or input view.",commonCauses:["Form submission that should reset on success."],relatedStatuses:[204]}},206:{code:206,phrase:"Partial Content",category:"Success",source:"IANA",rfc:"RFC9110",specUrl:e("15.3.7"),description:"The server is successfully fulfilling a range request for the target resource by transferring one or more parts of the selected representation.",expectsEmptyBody:false,isCacheable:"heuristic",requiresAuth:false,safeForMethods:["GET","HEAD"],relatedHeaders:[{name:"Content-Range",required:true,purpose:"Indicates which byte range is in the body."},{name:"Accept-Ranges",required:false,purpose:"Indicates supported range units."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Assemble the byte range with previously fetched parts; resume support.",commonCauses:["Range request for video, large file, or resumable download."],relatedStatuses:[200,416]}},207:{code:207,phrase:"Multi-Status",category:"Success",source:"IANA",rfc:"RFC4918",specUrl:"https://datatracker.ietf.org/doc/html/rfc4918#section-11.1",description:"WebDAV: provides status for multiple independent operations in a single response (multistatus XML).",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Parse the multistatus XML body for per-resource status codes.",commonCauses:["WebDAV PROPFIND, PROPPATCH, COPY, MOVE, DELETE on collections."],relatedStatuses:[208]}},208:{code:208,phrase:"Already Reported",category:"Success",source:"IANA",rfc:"RFC5842",specUrl:"https://datatracker.ietf.org/doc/html/rfc5842#section-7.1",description:"WebDAV: used inside a 207 Multi-Status response to avoid repeatedly enumerating internal members of multiple bindings to the same collection.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Treat as already-enumerated; do not re-fetch.",commonCauses:["WebDAV bindings already reported in the same multistatus."],relatedStatuses:[207]}},226:{code:226,phrase:"IM Used",category:"Success",source:"IANA",rfc:"RFC3229",specUrl:"https://datatracker.ietf.org/doc/html/rfc3229#section-10.4.1",description:"The server has fulfilled a GET request for the resource, and the response is a representation of the result of one or more instance-manipulations applied to the current instance.",expectsEmptyBody:false,isCacheable:"heuristic",requiresAuth:false,safeForMethods:["GET"],relatedHeaders:[{name:"IM",required:false,purpose:"Instance manipulation applied."},{name:"Delta-Base",required:false,purpose:"Base entity tag for delta encoding."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Apply the delta to the cached representation.",commonCauses:["Delta-encoded HTTP response."],relatedStatuses:[200]}},300:{code:300,phrase:"Multiple Choices",category:"Redirection",source:"IANA",rfc:"RFC9110",specUrl:e("15.4.1"),description:"The target resource has more than one representation, each with its own more specific identifier, and information about the alternatives is provided.",expectsEmptyBody:false,isCacheable:"heuristic",requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Location",required:false,purpose:"Server-preferred alternative URI."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Pick a representation from the listed alternatives or follow Location if provided.",commonCauses:["Content negotiation with multiple acceptable variants."],relatedStatuses:[301,302,303]}},301:{code:301,phrase:"Moved Permanently",category:"Redirection",source:"IANA",rfc:"RFC9110",specUrl:e("15.4.2"),description:"The target resource has been assigned a new permanent URI and any future references to this resource ought to use the enclosed URI.",expectsEmptyBody:false,isCacheable:"heuristic",requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Location",required:true,purpose:"New permanent URI."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Follow Location; update bookmarks/links to the new URI.",commonCauses:["Permanent URL change, domain migration, HTTPS upgrade."],relatedStatuses:[308,302]}},302:{code:302,phrase:"Found",category:"Redirection",source:"IANA",rfc:"RFC9110",specUrl:e("15.4.3"),description:"The target resource resides temporarily under a different URI. The client should continue to use the original request URI for future requests.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Location",required:true,purpose:"Temporary URI."}],aliases:["Moved Temporarily"],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Follow Location for this request only; do not cache the redirect.",commonCauses:["Temporary redirect, post-login redirect."],relatedStatuses:[303,307]}},303:{code:303,phrase:"See Other",category:"Redirection",source:"IANA",rfc:"RFC9110",specUrl:e("15.4.4"),description:"The server is redirecting the user agent to a different resource, as indicated by Location, that is intended to provide an indirect response to the original request.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Location",required:true,purpose:"Target URI to GET."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Issue a GET to Location regardless of the original method.",commonCauses:["Post/Redirect/Get pattern after form submission."],relatedStatuses:[302,307]}},304:{code:304,phrase:"Not Modified",category:"Redirection",source:"IANA",rfc:"RFC9110",specUrl:e("15.4.5"),description:"Indicates that the conditional request would have resulted in a 200 OK response if it were not for the fact that the condition evaluated to false.",expectsEmptyBody:true,isCacheable:false,requiresAuth:false,safeForMethods:["GET","HEAD"],relatedHeaders:[{name:"ETag",required:false,purpose:"Validator matching the cached representation."},{name:"Cache-Control",required:false,purpose:"Freshness directives."},{name:"Vary",required:false,purpose:"Headers that affected selection."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Serve from the local cache; the cached representation is still fresh.",commonCauses:["Conditional GET with If-None-Match or If-Modified-Since matched."],relatedStatuses:[200,412]}},305:{code:305,phrase:"Use Proxy",category:"Redirection",source:"IANA",rfc:"RFC9110",specUrl:e("15.4.6"),description:"Deprecated. The requested resource must be accessed through a specified proxy.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:true,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Ignore; modern clients must not honor 305 for security reasons.",commonCauses:["Legacy proxy configuration."],relatedStatuses:[]}},307:{code:307,phrase:"Temporary Redirect",category:"Redirection",source:"IANA",rfc:"RFC9110",specUrl:e("15.4.8"),description:"The target resource resides temporarily under a different URI and the user agent MUST NOT change the request method when following the redirect.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Location",required:true,purpose:"Temporary URI."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Follow Location with the same method and body.",commonCauses:["Temporary redirect where method preservation matters (e.g., POST)."],relatedStatuses:[302,308]}},308:{code:308,phrase:"Permanent Redirect",category:"Redirection",source:"IANA",rfc:"RFC9110",specUrl:e("15.4.9"),description:"The target resource has been assigned a new permanent URI and the user agent MUST NOT change the request method when following the redirect.",expectsEmptyBody:false,isCacheable:"heuristic",requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Location",required:true,purpose:"New permanent URI."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Follow Location with the same method; update stored references.",commonCauses:["Permanent move where method preservation matters."],relatedStatuses:[301,307]}},400:{code:400,phrase:"Bad Request",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.1"),description:"The server cannot or will not process the request due to something that is perceived to be a client error (e.g., malformed syntax, invalid framing).",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Fix the request payload or syntax; do not retry as-is.",commonCauses:["Malformed JSON","Missing required field","Invalid header syntax"],relatedStatuses:[422,415]}},401:{code:401,phrase:"Unauthorized",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.2"),description:"The request has not been applied because it lacks valid authentication credentials for the target resource.",expectsEmptyBody:false,isCacheable:false,requiresAuth:true,safeForMethods:"all",relatedHeaders:[{name:"WWW-Authenticate",required:true,purpose:"Challenge describing the auth scheme."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Acquire valid credentials and retry with an Authorization header.",commonCauses:["Missing or expired token","Wrong credentials","Token revoked"],relatedStatuses:[403,407]}},402:{code:402,phrase:"Payment Required",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.3"),description:"Reserved for future use. Originally intended for digital payment systems.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Surface payment/billing requirement to the user; do not auto-retry.",commonCauses:["API quota exhausted on paid tier","Subscription expired"],relatedStatuses:[403,429]}},403:{code:403,phrase:"Forbidden",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.4"),description:"The server understood the request but refuses to authorize it. Re-authenticating will not help.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Do not retry; the principal lacks permission for this resource.",commonCauses:["Insufficient role/scope","IP blocked","CSRF check failed"],relatedStatuses:[401,451]}},404:{code:404,phrase:"Not Found",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.5"),description:"The origin server did not find a current representation for the target resource or is not willing to disclose that one exists.",expectsEmptyBody:false,isCacheable:"heuristic",requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Verify the URL; do not retry unless the resource is expected to appear later.",commonCauses:["Typo in URL","Resource deleted","Privacy-preserving hide of 403"],relatedStatuses:[410,403]}},405:{code:405,phrase:"Method Not Allowed",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.6"),description:"The method received in the request-line is known by the origin server but not supported by the target resource.",expectsEmptyBody:false,isCacheable:"heuristic",requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Allow",required:true,purpose:"Lists the methods supported by the target resource."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Inspect Allow header and reissue with a permitted method.",commonCauses:["Wrong HTTP verb for the endpoint."],relatedStatuses:[501]}},406:{code:406,phrase:"Not Acceptable",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.7"),description:"The target resource does not have a current representation that would be acceptable to the user agent according to the proactive negotiation header fields.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Accept",required:false,purpose:"Originating preference header."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Relax Accept/Accept-Language constraints and retry.",commonCauses:["No representation matches the client's Accept headers."],relatedStatuses:[415]}},407:{code:407,phrase:"Proxy Authentication Required",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.8"),description:"Similar to 401 but indicates that the client needs to authenticate itself in order to use a proxy.",expectsEmptyBody:false,isCacheable:false,requiresAuth:true,safeForMethods:"all",relatedHeaders:[{name:"Proxy-Authenticate",required:true,purpose:"Proxy auth challenge."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Supply Proxy-Authorization and retry.",commonCauses:["Corporate proxy requiring authentication."],relatedStatuses:[401]}},408:{code:408,phrase:"Request Timeout",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.9"),description:"The server did not receive a complete request message within the time that it was prepared to wait.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"exponential-backoff",agentAction:"Retry the request with backoff; consider increasing client timeout.",commonCauses:["Slow client","Network congestion","Idle keep-alive connection closed"],relatedStatuses:[504]}},409:{code:409,phrase:"Conflict",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.10"),description:"The request could not be completed due to a conflict with the current state of the target resource.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Re-read the current resource state and resolve the conflict before resubmitting.",commonCauses:["Concurrent edit collision","Duplicate resource creation","Version mismatch"],relatedStatuses:[412,428]}},410:{code:410,phrase:"Gone",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.11"),description:"Access to the target resource is no longer available at the origin server and this condition is likely to be permanent.",expectsEmptyBody:false,isCacheable:"heuristic",requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Remove any cached references; do not retry.",commonCauses:["Permanently deleted resource."],relatedStatuses:[404]}},411:{code:411,phrase:"Length Required",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.12"),description:"The server refuses to accept the request without a defined Content-Length.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:["POST","PUT","PATCH"],relatedHeaders:[{name:"Content-Length",required:true,purpose:"Length of the request body in octets."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Add Content-Length and retry.",commonCauses:["Chunked transfer rejected by server."],relatedStatuses:[]}},412:{code:412,phrase:"Precondition Failed",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.13"),description:"One or more conditions given in the request header fields evaluated to false when tested on the server.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"If-Match",required:false,purpose:"Originating precondition."},{name:"If-Unmodified-Since",required:false,purpose:"Originating precondition."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Re-fetch current ETag/Last-Modified and retry with the new validator.",commonCauses:["Stale If-Match","Optimistic concurrency control mismatch"],relatedStatuses:[409,428]}},413:{code:413,phrase:"Content Too Large",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.14"),description:"The server is refusing to process a request because the request content is larger than the server is willing or able to process.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:["POST","PUT","PATCH"],relatedHeaders:[{name:"Retry-After",required:false,purpose:"Indicates when the condition may be temporary."}],aliases:["Payload Too Large","Request Entity Too Large"],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Reduce body size, chunk the upload, or use a different endpoint.",commonCauses:["Upload exceeds server limit."],relatedStatuses:[]}},414:{code:414,phrase:"URI Too Long",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.15"),description:"The server is refusing to service the request because the request-target is longer than the server is willing to interpret.",expectsEmptyBody:false,isCacheable:"heuristic",requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:["Request-URI Too Long"],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Shorten the URL; move parameters into a POST body.",commonCauses:["Excessive query string","Loop generating long redirect URI"],relatedStatuses:[]}},415:{code:415,phrase:"Unsupported Media Type",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.16"),description:"The server is refusing to service the request because the content is in a format not supported by this method on the target resource.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:["POST","PUT","PATCH"],relatedHeaders:[{name:"Accept",required:false,purpose:"Indicates supported response types."},{name:"Accept-Encoding",required:false,purpose:"Indicates supported encodings."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Set Content-Type to a supported value and retry.",commonCauses:["Wrong Content-Type","Unsupported encoding"],relatedStatuses:[406]}},416:{code:416,phrase:"Range Not Satisfiable",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.17"),description:"None of the ranges in the request's Range header field overlap the current extent of the selected resource, or the set of ranges requested has been rejected.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:["GET","HEAD"],relatedHeaders:[{name:"Content-Range",required:false,purpose:"Total size of the representation."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Re-check the resource length and request a valid range.",commonCauses:["Range beyond resource length."],relatedStatuses:[206]}},417:{code:417,phrase:"Expectation Failed",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.18"),description:"The expectation given in the request's Expect header field could not be met by at least one of the inbound servers.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Remove the Expect header and retry.",commonCauses:["Server does not support Expect: 100-continue."],relatedStatuses:[100]}},418:{code:418,phrase:"I'm a teapot",category:"Client Error",source:"IANA",rfc:"RFC2324",specUrl:"https://datatracker.ietf.org/doc/html/rfc2324#section-2.3.2",description:"Any attempt to brew coffee with a teapot should result in the error code 418 I'm a teapot. A joke status from the Hyper Text Coffee Pot Control Protocol.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Treat as a humorous easter egg or anti-bot signal; do not retry.",commonCauses:["Server is signaling a refusal humorously."],relatedStatuses:[]}},421:{code:421,phrase:"Misdirected Request",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.20"),description:"The request was directed at a server that is not able to produce a response. This can be sent by a server that is not configured to produce responses for the combination of scheme and authority included in the request URI.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"immediate",agentAction:"Re-resolve the host and open a new connection before retrying.",commonCauses:["HTTP/2 connection coalescing to wrong origin."],relatedStatuses:[]}},422:{code:422,phrase:"Unprocessable Content",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.21"),description:"The server understands the content type of the request content and the syntax of the request content is correct, but it was unable to process the contained instructions.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:["Unprocessable Entity"],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Validate semantic constraints (e.g., schema validation errors) and resubmit.",commonCauses:["Schema validation failure","Business rule violation"],relatedStatuses:[400]}},423:{code:423,phrase:"Locked",category:"Client Error",source:"IANA",rfc:"RFC4918",specUrl:"https://datatracker.ietf.org/doc/html/rfc4918#section-11.3",description:"WebDAV: the source or destination resource is locked.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"exponential-backoff",agentAction:"Acquire the lock or wait for it to release, then retry.",commonCauses:["WebDAV resource locked by another client."],relatedStatuses:[424]}},424:{code:424,phrase:"Failed Dependency",category:"Client Error",source:"IANA",rfc:"RFC4918",specUrl:"https://datatracker.ietf.org/doc/html/rfc4918#section-11.4",description:"WebDAV: the method could not be performed on the resource because the requested action depended on another action which failed.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Resolve the failing prerequisite action first.",commonCauses:["Prior WebDAV operation in the same request failed."],relatedStatuses:[423]}},425:{code:425,phrase:"Too Early",category:"Client Error",source:"IANA",rfc:"RFC8470",specUrl:"https://datatracker.ietf.org/doc/html/rfc8470#section-5.2",description:"Indicates that the server is unwilling to risk processing a request that might be replayed (e.g., TLS 1.3 early data).",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Early-Data",required:false,purpose:"Indicates the request was sent in TLS early data."}],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"immediate",agentAction:"Retry the request after the TLS handshake completes.",commonCauses:["Request sent in TLS 1.3 0-RTT early data."],relatedStatuses:[]}},426:{code:426,phrase:"Upgrade Required",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.22"),description:"The server refuses to perform the request using the current protocol but might be willing to do so after the client upgrades to a different protocol.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Upgrade",required:true,purpose:"Protocols the server is willing to switch to."},{name:"Connection",required:true,purpose:'Must include "Upgrade".'}],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"immediate",agentAction:"Upgrade to the protocol indicated in Upgrade and retry.",commonCauses:["Server requires HTTPS or HTTP/2."],relatedStatuses:[101]}},428:{code:428,phrase:"Precondition Required",category:"Client Error",source:"IANA",rfc:"RFC6585",specUrl:"https://datatracker.ietf.org/doc/html/rfc6585#section-3",description:"The origin server requires the request to be conditional. Intended to prevent the lost update problem.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Add If-Match or If-Unmodified-Since and retry.",commonCauses:["Server enforces optimistic concurrency control."],relatedStatuses:[412]}},429:{code:429,phrase:"Too Many Requests",category:"Client Error",source:"IANA",rfc:"RFC6585",specUrl:"https://datatracker.ietf.org/doc/html/rfc6585#section-4",description:'The user has sent too many requests in a given amount of time ("rate limiting").',expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Retry-After",required:false,purpose:"Indicates how long to wait before retrying."}],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"respect-retry-after",agentAction:"Wait the duration in Retry-After (or back off exponentially) and retry.",commonCauses:["Rate limit exceeded."],relatedStatuses:[503,509]}},431:{code:431,phrase:"Request Header Fields Too Large",category:"Client Error",source:"IANA",rfc:"RFC6585",specUrl:"https://datatracker.ietf.org/doc/html/rfc6585#section-5",description:"The server is unwilling to process the request because its header fields are too large.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Trim cookies/headers and retry.",commonCauses:["Oversized cookie jar","Long Authorization token"],relatedStatuses:[]}},451:{code:451,phrase:"Unavailable For Legal Reasons",category:"Client Error",source:"IANA",rfc:"RFC7725",specUrl:"https://datatracker.ietf.org/doc/html/rfc7725#section-3",description:"The server is denying access to the resource as a consequence of a legal demand.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Surface the legal blockage to the user; do not retry.",commonCauses:["Court order","Government censorship","DMCA takedown"],relatedStatuses:[403]}},500:{code:500,phrase:"Internal Server Error",category:"Server Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.6.1"),description:"The server encountered an unexpected condition that prevented it from fulfilling the request.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"exponential-backoff",agentAction:"Retry idempotent requests with backoff; report to the operator if persistent.",commonCauses:["Unhandled exception","Database failure","Misconfiguration"],relatedStatuses:[502,503]}},501:{code:501,phrase:"Not Implemented",category:"Server Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.6.2"),description:"The server does not support the functionality required to fulfill the request.",expectsEmptyBody:false,isCacheable:"heuristic",requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Use a different method or endpoint; this feature is not supported.",commonCauses:["Server lacks support for the requested method."],relatedStatuses:[405]}},502:{code:502,phrase:"Bad Gateway",category:"Server Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.6.3"),description:"The server, while acting as a gateway or proxy, received an invalid response from an inbound server.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"exponential-backoff",agentAction:"Retry with backoff; the upstream is likely transiently unhealthy.",commonCauses:["Upstream returned malformed response","Origin briefly down"],relatedStatuses:[503,504]}},503:{code:503,phrase:"Service Unavailable",category:"Server Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.6.4"),description:"The server is currently unable to handle the request due to a temporary overload or scheduled maintenance.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Retry-After",required:false,purpose:"Indicates how long the service is expected to be unavailable."}],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"respect-retry-after",agentAction:"Respect Retry-After if present; otherwise back off exponentially.",commonCauses:["Overload","Scheduled maintenance","Circuit breaker open"],relatedStatuses:[429,502,504]}},504:{code:504,phrase:"Gateway Timeout",category:"Server Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.6.5"),description:"The server, while acting as a gateway or proxy, did not receive a timely response from an upstream server.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"exponential-backoff",agentAction:"Retry with backoff; consider increasing the upstream timeout.",commonCauses:["Slow upstream","Network partition"],relatedStatuses:[408,502]}},505:{code:505,phrase:"HTTP Version Not Supported",category:"Server Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.6.6"),description:"The server does not support, or refuses to support, the major version of HTTP that was used in the request.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Downgrade or upgrade to a supported HTTP version and retry.",commonCauses:["Client speaks HTTP version the server has disabled."],relatedStatuses:[426]}},506:{code:506,phrase:"Variant Also Negotiates",category:"Server Error",source:"IANA",rfc:"RFC2295",specUrl:"https://datatracker.ietf.org/doc/html/rfc2295#section-8.1",description:"Transparent content negotiation for the request results in a circular reference.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Server-side configuration bug; report to the operator.",commonCauses:["Misconfigured content negotiation chain."],relatedStatuses:[]}},507:{code:507,phrase:"Insufficient Storage",category:"Server Error",source:"IANA",rfc:"RFC4918",specUrl:"https://datatracker.ietf.org/doc/html/rfc4918#section-11.5",description:"WebDAV: the method could not be performed on the resource because the server is unable to store the representation needed to successfully complete the request.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"exponential-backoff",agentAction:"Retry later or reduce payload size; storage is full upstream.",commonCauses:["Disk full on server."],relatedStatuses:[413]}},508:{code:508,phrase:"Loop Detected",category:"Server Error",source:"IANA",rfc:"RFC5842",specUrl:"https://datatracker.ietf.org/doc/html/rfc5842#section-7.2",description:"WebDAV: the server terminated an operation because it encountered an infinite loop while processing a request with Depth: infinity.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Restructure the request to avoid the cycle.",commonCauses:["Cyclic WebDAV bindings."],relatedStatuses:[]}},510:{code:510,phrase:"Not Extended",category:"Server Error",source:"IANA",rfc:"RFC2774",specUrl:"https://datatracker.ietf.org/doc/html/rfc2774#section-7",description:"Further extensions to the request are required for the server to fulfill it.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:true,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Add the required HTTP extension declarations and retry.",commonCauses:["Server requires HTTP extension framework."],relatedStatuses:[]}},511:{code:511,phrase:"Network Authentication Required",category:"Server Error",source:"IANA",rfc:"RFC6585",specUrl:"https://datatracker.ietf.org/doc/html/rfc6585#section-6",description:"The client needs to authenticate to gain network access. Intended for captive portals.",expectsEmptyBody:false,isCacheable:false,requiresAuth:true,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"immediate",agentAction:"Complete the captive portal flow, then retry.",commonCauses:["Public Wi-Fi captive portal."],relatedStatuses:[401]}}};
+export{a as IanaRegistry,r as IanaStatus};

index.cjs

+'use strict';var p={CONTINUE:100,SWITCHING_PROTOCOLS:101,PROCESSING:102,EARLY_HINTS:103,OK:200,CREATED:201,ACCEPTED:202,NON_AUTHORITATIVE_INFORMATION:203,NO_CONTENT:204,RESET_CONTENT:205,PARTIAL_CONTENT:206,MULTI_STATUS:207,ALREADY_REPORTED:208,IM_USED:226,MULTIPLE_CHOICES:300,MOVED_PERMANENTLY:301,FOUND:302,SEE_OTHER:303,NOT_MODIFIED:304,USE_PROXY:305,TEMPORARY_REDIRECT:307,PERMANENT_REDIRECT:308,BAD_REQUEST:400,UNAUTHORIZED:401,PAYMENT_REQUIRED:402,FORBIDDEN:403,NOT_FOUND:404,METHOD_NOT_ALLOWED:405,NOT_ACCEPTABLE:406,PROXY_AUTHENTICATION_REQUIRED:407,REQUEST_TIMEOUT:408,CONFLICT:409,GONE:410,LENGTH_REQUIRED:411,PRECONDITION_FAILED:412,CONTENT_TOO_LARGE:413,URI_TOO_LONG:414,UNSUPPORTED_MEDIA_TYPE:415,RANGE_NOT_SATISFIABLE:416,EXPECTATION_FAILED:417,IM_A_TEAPOT:418,MISDIRECTED_REQUEST:421,UNPROCESSABLE_CONTENT:422,LOCKED:423,FAILED_DEPENDENCY:424,TOO_EARLY:425,UPGRADE_REQUIRED:426,PRECONDITION_REQUIRED:428,TOO_MANY_REQUESTS:429,REQUEST_HEADER_FIELDS_TOO_LARGE:431,UNAVAILABLE_FOR_LEGAL_REASONS:451,INTERNAL_SERVER_ERROR:500,NOT_IMPLEMENTED:501,BAD_GATEWAY:502,SERVICE_UNAVAILABLE:503,GATEWAY_TIMEOUT:504,HTTP_VERSION_NOT_SUPPORTED:505,VARIANT_ALSO_NEGOTIATES:506,INSUFFICIENT_STORAGE:507,LOOP_DETECTED:508,NOT_EXTENDED:510,NETWORK_AUTHENTICATION_REQUIRED:511},e=t=>`https://datatracker.ietf.org/doc/html/rfc9110#section-${t}`,a={100:{code:100,phrase:"Continue",category:"Informational",source:"IANA",rfc:"RFC9110",specUrl:e("15.2.1"),description:"The initial part of a request has been received and the client should continue to send the remainder of the request, or ignore the response if the request is already complete.",expectsEmptyBody:true,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Expect",required:false,purpose:"Originating request header that triggers a 100 response."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Continue sending the request body; treat as a successful handshake.",commonCauses:["Client sent Expect: 100-continue before a large body."],relatedStatuses:[417]}},101:{code:101,phrase:"Switching Protocols",category:"Informational",source:"IANA",rfc:"RFC9110",specUrl:e("15.2.2"),description:"The server understands and is willing to comply with the client request, via the Upgrade header field, for a change in the application protocol being used on this connection.",expectsEmptyBody:true,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Upgrade",required:true,purpose:"Lists the protocol(s) being switched to."},{name:"Connection",required:true,purpose:'Must include "Upgrade".'}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Switch to the protocol named in the Upgrade header (e.g., WebSocket).",commonCauses:["Client requested protocol upgrade (WebSocket, HTTP/2 cleartext)."],relatedStatuses:[426]}},102:{code:102,phrase:"Processing",category:"Informational",source:"IANA",rfc:"RFC2518",specUrl:"https://datatracker.ietf.org/doc/html/rfc2518#section-10.1",description:"WebDAV interim response indicating that the server has accepted the complete request but has not yet completed it. Deprecated by some clients.",expectsEmptyBody:true,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:true,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Keep the connection open and wait for the final response.",commonCauses:["Long-running WebDAV operation."],relatedStatuses:[]}},103:{code:103,phrase:"Early Hints",category:"Informational",source:"IANA",rfc:"RFC8297",specUrl:"https://datatracker.ietf.org/doc/html/rfc8297#section-2",description:"Used to return some response headers before the final HTTP message, typically to allow the client to preload resources via Link headers.",expectsEmptyBody:true,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Link",required:false,purpose:"Preload/preconnect hints sent before the final response."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Begin preloading hinted resources while awaiting the final response.",commonCauses:["Server-driven preload hints to reduce page load time."],relatedStatuses:[]}},200:{code:200,phrase:"OK",category:"Success",source:"IANA",rfc:"RFC9110",specUrl:e("15.3.1"),description:"The request has succeeded. The payload sent depends on the request method.",expectsEmptyBody:false,isCacheable:"heuristic",requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Parse and use the response body.",commonCauses:["Standard successful request."],relatedStatuses:[201,204,206]}},201:{code:201,phrase:"Created",category:"Success",source:"IANA",rfc:"RFC9110",specUrl:e("15.3.2"),description:"The request has been fulfilled and has resulted in one or more new resources being created. The primary resource URI is given by Location.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Location",required:false,purpose:"URI of the newly created resource."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Read the Location header for the new resource URI.",commonCauses:["Successful POST or PUT that created a resource."],relatedStatuses:[200,202]}},202:{code:202,phrase:"Accepted",category:"Success",source:"IANA",rfc:"RFC9110",specUrl:e("15.3.3"),description:"The request has been accepted for processing, but the processing has not been completed. The request might or might not be eventually acted upon.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Poll the indicated status endpoint or wait for an async callback.",commonCauses:["Async job submission, batch processing."],relatedStatuses:[201,303]}},203:{code:203,phrase:"Non-Authoritative Information",category:"Success",source:"IANA",rfc:"RFC9110",specUrl:e("15.3.4"),description:"The request was successful but the enclosed payload has been modified by a transforming proxy from that of the origin server.",expectsEmptyBody:false,isCacheable:"heuristic",requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Treat as 200 OK but be aware the body may have been transformed by an intermediary.",commonCauses:["Transforming proxy modified the response."],relatedStatuses:[200]}},204:{code:204,phrase:"No Content",category:"Success",source:"IANA",rfc:"RFC9110",specUrl:e("15.3.5"),description:"The server has successfully fulfilled the request and there is no additional content to send in the response payload body.",expectsEmptyBody:true,isCacheable:"heuristic",requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Do not attempt to parse a body; treat as success.",commonCauses:["Successful DELETE or PUT/PATCH that returns no body."],relatedStatuses:[200,205]}},205:{code:205,phrase:"Reset Content",category:"Success",source:"IANA",rfc:"RFC9110",specUrl:e("15.3.6"),description:"The server has fulfilled the request and desires that the user agent reset the document view which caused the request to be sent.",expectsEmptyBody:true,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Clear the originating form or input view.",commonCauses:["Form submission that should reset on success."],relatedStatuses:[204]}},206:{code:206,phrase:"Partial Content",category:"Success",source:"IANA",rfc:"RFC9110",specUrl:e("15.3.7"),description:"The server is successfully fulfilling a range request for the target resource by transferring one or more parts of the selected representation.",expectsEmptyBody:false,isCacheable:"heuristic",requiresAuth:false,safeForMethods:["GET","HEAD"],relatedHeaders:[{name:"Content-Range",required:true,purpose:"Indicates which byte range is in the body."},{name:"Accept-Ranges",required:false,purpose:"Indicates supported range units."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Assemble the byte range with previously fetched parts; resume support.",commonCauses:["Range request for video, large file, or resumable download."],relatedStatuses:[200,416]}},207:{code:207,phrase:"Multi-Status",category:"Success",source:"IANA",rfc:"RFC4918",specUrl:"https://datatracker.ietf.org/doc/html/rfc4918#section-11.1",description:"WebDAV: provides status for multiple independent operations in a single response (multistatus XML).",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Parse the multistatus XML body for per-resource status codes.",commonCauses:["WebDAV PROPFIND, PROPPATCH, COPY, MOVE, DELETE on collections."],relatedStatuses:[208]}},208:{code:208,phrase:"Already Reported",category:"Success",source:"IANA",rfc:"RFC5842",specUrl:"https://datatracker.ietf.org/doc/html/rfc5842#section-7.1",description:"WebDAV: used inside a 207 Multi-Status response to avoid repeatedly enumerating internal members of multiple bindings to the same collection.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Treat as already-enumerated; do not re-fetch.",commonCauses:["WebDAV bindings already reported in the same multistatus."],relatedStatuses:[207]}},226:{code:226,phrase:"IM Used",category:"Success",source:"IANA",rfc:"RFC3229",specUrl:"https://datatracker.ietf.org/doc/html/rfc3229#section-10.4.1",description:"The server has fulfilled a GET request for the resource, and the response is a representation of the result of one or more instance-manipulations applied to the current instance.",expectsEmptyBody:false,isCacheable:"heuristic",requiresAuth:false,safeForMethods:["GET"],relatedHeaders:[{name:"IM",required:false,purpose:"Instance manipulation applied."},{name:"Delta-Base",required:false,purpose:"Base entity tag for delta encoding."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Apply the delta to the cached representation.",commonCauses:["Delta-encoded HTTP response."],relatedStatuses:[200]}},300:{code:300,phrase:"Multiple Choices",category:"Redirection",source:"IANA",rfc:"RFC9110",specUrl:e("15.4.1"),description:"The target resource has more than one representation, each with its own more specific identifier, and information about the alternatives is provided.",expectsEmptyBody:false,isCacheable:"heuristic",requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Location",required:false,purpose:"Server-preferred alternative URI."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Pick a representation from the listed alternatives or follow Location if provided.",commonCauses:["Content negotiation with multiple acceptable variants."],relatedStatuses:[301,302,303]}},301:{code:301,phrase:"Moved Permanently",category:"Redirection",source:"IANA",rfc:"RFC9110",specUrl:e("15.4.2"),description:"The target resource has been assigned a new permanent URI and any future references to this resource ought to use the enclosed URI.",expectsEmptyBody:false,isCacheable:"heuristic",requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Location",required:true,purpose:"New permanent URI."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Follow Location; update bookmarks/links to the new URI.",commonCauses:["Permanent URL change, domain migration, HTTPS upgrade."],relatedStatuses:[308,302]}},302:{code:302,phrase:"Found",category:"Redirection",source:"IANA",rfc:"RFC9110",specUrl:e("15.4.3"),description:"The target resource resides temporarily under a different URI. The client should continue to use the original request URI for future requests.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Location",required:true,purpose:"Temporary URI."}],aliases:["Moved Temporarily"],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Follow Location for this request only; do not cache the redirect.",commonCauses:["Temporary redirect, post-login redirect."],relatedStatuses:[303,307]}},303:{code:303,phrase:"See Other",category:"Redirection",source:"IANA",rfc:"RFC9110",specUrl:e("15.4.4"),description:"The server is redirecting the user agent to a different resource, as indicated by Location, that is intended to provide an indirect response to the original request.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Location",required:true,purpose:"Target URI to GET."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Issue a GET to Location regardless of the original method.",commonCauses:["Post/Redirect/Get pattern after form submission."],relatedStatuses:[302,307]}},304:{code:304,phrase:"Not Modified",category:"Redirection",source:"IANA",rfc:"RFC9110",specUrl:e("15.4.5"),description:"Indicates that the conditional request would have resulted in a 200 OK response if it were not for the fact that the condition evaluated to false.",expectsEmptyBody:true,isCacheable:false,requiresAuth:false,safeForMethods:["GET","HEAD"],relatedHeaders:[{name:"ETag",required:false,purpose:"Validator matching the cached representation."},{name:"Cache-Control",required:false,purpose:"Freshness directives."},{name:"Vary",required:false,purpose:"Headers that affected selection."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Serve from the local cache; the cached representation is still fresh.",commonCauses:["Conditional GET with If-None-Match or If-Modified-Since matched."],relatedStatuses:[200,412]}},305:{code:305,phrase:"Use Proxy",category:"Redirection",source:"IANA",rfc:"RFC9110",specUrl:e("15.4.6"),description:"Deprecated. The requested resource must be accessed through a specified proxy.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:true,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Ignore; modern clients must not honor 305 for security reasons.",commonCauses:["Legacy proxy configuration."],relatedStatuses:[]}},307:{code:307,phrase:"Temporary Redirect",category:"Redirection",source:"IANA",rfc:"RFC9110",specUrl:e("15.4.8"),description:"The target resource resides temporarily under a different URI and the user agent MUST NOT change the request method when following the redirect.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Location",required:true,purpose:"Temporary URI."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Follow Location with the same method and body.",commonCauses:["Temporary redirect where method preservation matters (e.g., POST)."],relatedStatuses:[302,308]}},308:{code:308,phrase:"Permanent Redirect",category:"Redirection",source:"IANA",rfc:"RFC9110",specUrl:e("15.4.9"),description:"The target resource has been assigned a new permanent URI and the user agent MUST NOT change the request method when following the redirect.",expectsEmptyBody:false,isCacheable:"heuristic",requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Location",required:true,purpose:"New permanent URI."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Follow Location with the same method; update stored references.",commonCauses:["Permanent move where method preservation matters."],relatedStatuses:[301,307]}},400:{code:400,phrase:"Bad Request",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.1"),description:"The server cannot or will not process the request due to something that is perceived to be a client error (e.g., malformed syntax, invalid framing).",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Fix the request payload or syntax; do not retry as-is.",commonCauses:["Malformed JSON","Missing required field","Invalid header syntax"],relatedStatuses:[422,415]}},401:{code:401,phrase:"Unauthorized",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.2"),description:"The request has not been applied because it lacks valid authentication credentials for the target resource.",expectsEmptyBody:false,isCacheable:false,requiresAuth:true,safeForMethods:"all",relatedHeaders:[{name:"WWW-Authenticate",required:true,purpose:"Challenge describing the auth scheme."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Acquire valid credentials and retry with an Authorization header.",commonCauses:["Missing or expired token","Wrong credentials","Token revoked"],relatedStatuses:[403,407]}},402:{code:402,phrase:"Payment Required",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.3"),description:"Reserved for future use. Originally intended for digital payment systems.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Surface payment/billing requirement to the user; do not auto-retry.",commonCauses:["API quota exhausted on paid tier","Subscription expired"],relatedStatuses:[403,429]}},403:{code:403,phrase:"Forbidden",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.4"),description:"The server understood the request but refuses to authorize it. Re-authenticating will not help.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Do not retry; the principal lacks permission for this resource.",commonCauses:["Insufficient role/scope","IP blocked","CSRF check failed"],relatedStatuses:[401,451]}},404:{code:404,phrase:"Not Found",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.5"),description:"The origin server did not find a current representation for the target resource or is not willing to disclose that one exists.",expectsEmptyBody:false,isCacheable:"heuristic",requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Verify the URL; do not retry unless the resource is expected to appear later.",commonCauses:["Typo in URL","Resource deleted","Privacy-preserving hide of 403"],relatedStatuses:[410,403]}},405:{code:405,phrase:"Method Not Allowed",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.6"),description:"The method received in the request-line is known by the origin server but not supported by the target resource.",expectsEmptyBody:false,isCacheable:"heuristic",requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Allow",required:true,purpose:"Lists the methods supported by the target resource."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Inspect Allow header and reissue with a permitted method.",commonCauses:["Wrong HTTP verb for the endpoint."],relatedStatuses:[501]}},406:{code:406,phrase:"Not Acceptable",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.7"),description:"The target resource does not have a current representation that would be acceptable to the user agent according to the proactive negotiation header fields.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Accept",required:false,purpose:"Originating preference header."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Relax Accept/Accept-Language constraints and retry.",commonCauses:["No representation matches the client's Accept headers."],relatedStatuses:[415]}},407:{code:407,phrase:"Proxy Authentication Required",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.8"),description:"Similar to 401 but indicates that the client needs to authenticate itself in order to use a proxy.",expectsEmptyBody:false,isCacheable:false,requiresAuth:true,safeForMethods:"all",relatedHeaders:[{name:"Proxy-Authenticate",required:true,purpose:"Proxy auth challenge."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Supply Proxy-Authorization and retry.",commonCauses:["Corporate proxy requiring authentication."],relatedStatuses:[401]}},408:{code:408,phrase:"Request Timeout",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.9"),description:"The server did not receive a complete request message within the time that it was prepared to wait.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"exponential-backoff",agentAction:"Retry the request with backoff; consider increasing client timeout.",commonCauses:["Slow client","Network congestion","Idle keep-alive connection closed"],relatedStatuses:[504]}},409:{code:409,phrase:"Conflict",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.10"),description:"The request could not be completed due to a conflict with the current state of the target resource.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Re-read the current resource state and resolve the conflict before resubmitting.",commonCauses:["Concurrent edit collision","Duplicate resource creation","Version mismatch"],relatedStatuses:[412,428]}},410:{code:410,phrase:"Gone",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.11"),description:"Access to the target resource is no longer available at the origin server and this condition is likely to be permanent.",expectsEmptyBody:false,isCacheable:"heuristic",requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Remove any cached references; do not retry.",commonCauses:["Permanently deleted resource."],relatedStatuses:[404]}},411:{code:411,phrase:"Length Required",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.12"),description:"The server refuses to accept the request without a defined Content-Length.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:["POST","PUT","PATCH"],relatedHeaders:[{name:"Content-Length",required:true,purpose:"Length of the request body in octets."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Add Content-Length and retry.",commonCauses:["Chunked transfer rejected by server."],relatedStatuses:[]}},412:{code:412,phrase:"Precondition Failed",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.13"),description:"One or more conditions given in the request header fields evaluated to false when tested on the server.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"If-Match",required:false,purpose:"Originating precondition."},{name:"If-Unmodified-Since",required:false,purpose:"Originating precondition."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Re-fetch current ETag/Last-Modified and retry with the new validator.",commonCauses:["Stale If-Match","Optimistic concurrency control mismatch"],relatedStatuses:[409,428]}},413:{code:413,phrase:"Content Too Large",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.14"),description:"The server is refusing to process a request because the request content is larger than the server is willing or able to process.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:["POST","PUT","PATCH"],relatedHeaders:[{name:"Retry-After",required:false,purpose:"Indicates when the condition may be temporary."}],aliases:["Payload Too Large","Request Entity Too Large"],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Reduce body size, chunk the upload, or use a different endpoint.",commonCauses:["Upload exceeds server limit."],relatedStatuses:[]}},414:{code:414,phrase:"URI Too Long",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.15"),description:"The server is refusing to service the request because the request-target is longer than the server is willing to interpret.",expectsEmptyBody:false,isCacheable:"heuristic",requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:["Request-URI Too Long"],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Shorten the URL; move parameters into a POST body.",commonCauses:["Excessive query string","Loop generating long redirect URI"],relatedStatuses:[]}},415:{code:415,phrase:"Unsupported Media Type",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.16"),description:"The server is refusing to service the request because the content is in a format not supported by this method on the target resource.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:["POST","PUT","PATCH"],relatedHeaders:[{name:"Accept",required:false,purpose:"Indicates supported response types."},{name:"Accept-Encoding",required:false,purpose:"Indicates supported encodings."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Set Content-Type to a supported value and retry.",commonCauses:["Wrong Content-Type","Unsupported encoding"],relatedStatuses:[406]}},416:{code:416,phrase:"Range Not Satisfiable",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.17"),description:"None of the ranges in the request's Range header field overlap the current extent of the selected resource, or the set of ranges requested has been rejected.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:["GET","HEAD"],relatedHeaders:[{name:"Content-Range",required:false,purpose:"Total size of the representation."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Re-check the resource length and request a valid range.",commonCauses:["Range beyond resource length."],relatedStatuses:[206]}},417:{code:417,phrase:"Expectation Failed",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.18"),description:"The expectation given in the request's Expect header field could not be met by at least one of the inbound servers.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Remove the Expect header and retry.",commonCauses:["Server does not support Expect: 100-continue."],relatedStatuses:[100]}},418:{code:418,phrase:"I'm a teapot",category:"Client Error",source:"IANA",rfc:"RFC2324",specUrl:"https://datatracker.ietf.org/doc/html/rfc2324#section-2.3.2",description:"Any attempt to brew coffee with a teapot should result in the error code 418 I'm a teapot. A joke status from the Hyper Text Coffee Pot Control Protocol.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Treat as a humorous easter egg or anti-bot signal; do not retry.",commonCauses:["Server is signaling a refusal humorously."],relatedStatuses:[]}},421:{code:421,phrase:"Misdirected Request",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.20"),description:"The request was directed at a server that is not able to produce a response. This can be sent by a server that is not configured to produce responses for the combination of scheme and authority included in the request URI.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"immediate",agentAction:"Re-resolve the host and open a new connection before retrying.",commonCauses:["HTTP/2 connection coalescing to wrong origin."],relatedStatuses:[]}},422:{code:422,phrase:"Unprocessable Content",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.21"),description:"The server understands the content type of the request content and the syntax of the request content is correct, but it was unable to process the contained instructions.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:["Unprocessable Entity"],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Validate semantic constraints (e.g., schema validation errors) and resubmit.",commonCauses:["Schema validation failure","Business rule violation"],relatedStatuses:[400]}},423:{code:423,phrase:"Locked",category:"Client Error",source:"IANA",rfc:"RFC4918",specUrl:"https://datatracker.ietf.org/doc/html/rfc4918#section-11.3",description:"WebDAV: the source or destination resource is locked.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"exponential-backoff",agentAction:"Acquire the lock or wait for it to release, then retry.",commonCauses:["WebDAV resource locked by another client."],relatedStatuses:[424]}},424:{code:424,phrase:"Failed Dependency",category:"Client Error",source:"IANA",rfc:"RFC4918",specUrl:"https://datatracker.ietf.org/doc/html/rfc4918#section-11.4",description:"WebDAV: the method could not be performed on the resource because the requested action depended on another action which failed.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Resolve the failing prerequisite action first.",commonCauses:["Prior WebDAV operation in the same request failed."],relatedStatuses:[423]}},425:{code:425,phrase:"Too Early",category:"Client Error",source:"IANA",rfc:"RFC8470",specUrl:"https://datatracker.ietf.org/doc/html/rfc8470#section-5.2",description:"Indicates that the server is unwilling to risk processing a request that might be replayed (e.g., TLS 1.3 early data).",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Early-Data",required:false,purpose:"Indicates the request was sent in TLS early data."}],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"immediate",agentAction:"Retry the request after the TLS handshake completes.",commonCauses:["Request sent in TLS 1.3 0-RTT early data."],relatedStatuses:[]}},426:{code:426,phrase:"Upgrade Required",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.22"),description:"The server refuses to perform the request using the current protocol but might be willing to do so after the client upgrades to a different protocol.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Upgrade",required:true,purpose:"Protocols the server is willing to switch to."},{name:"Connection",required:true,purpose:'Must include "Upgrade".'}],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"immediate",agentAction:"Upgrade to the protocol indicated in Upgrade and retry.",commonCauses:["Server requires HTTPS or HTTP/2."],relatedStatuses:[101]}},428:{code:428,phrase:"Precondition Required",category:"Client Error",source:"IANA",rfc:"RFC6585",specUrl:"https://datatracker.ietf.org/doc/html/rfc6585#section-3",description:"The origin server requires the request to be conditional. Intended to prevent the lost update problem.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Add If-Match or If-Unmodified-Since and retry.",commonCauses:["Server enforces optimistic concurrency control."],relatedStatuses:[412]}},429:{code:429,phrase:"Too Many Requests",category:"Client Error",source:"IANA",rfc:"RFC6585",specUrl:"https://datatracker.ietf.org/doc/html/rfc6585#section-4",description:'The user has sent too many requests in a given amount of time ("rate limiting").',expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Retry-After",required:false,purpose:"Indicates how long to wait before retrying."}],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"respect-retry-after",agentAction:"Wait the duration in Retry-After (or back off exponentially) and retry.",commonCauses:["Rate limit exceeded."],relatedStatuses:[503,509]}},431:{code:431,phrase:"Request Header Fields Too Large",category:"Client Error",source:"IANA",rfc:"RFC6585",specUrl:"https://datatracker.ietf.org/doc/html/rfc6585#section-5",description:"The server is unwilling to process the request because its header fields are too large.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Trim cookies/headers and retry.",commonCauses:["Oversized cookie jar","Long Authorization token"],relatedStatuses:[]}},451:{code:451,phrase:"Unavailable For Legal Reasons",category:"Client Error",source:"IANA",rfc:"RFC7725",specUrl:"https://datatracker.ietf.org/doc/html/rfc7725#section-3",description:"The server is denying access to the resource as a consequence of a legal demand.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Surface the legal blockage to the user; do not retry.",commonCauses:["Court order","Government censorship","DMCA takedown"],relatedStatuses:[403]}},500:{code:500,phrase:"Internal Server Error",category:"Server Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.6.1"),description:"The server encountered an unexpected condition that prevented it from fulfilling the request.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"exponential-backoff",agentAction:"Retry idempotent requests with backoff; report to the operator if persistent.",commonCauses:["Unhandled exception","Database failure","Misconfiguration"],relatedStatuses:[502,503]}},501:{code:501,phrase:"Not Implemented",category:"Server Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.6.2"),description:"The server does not support the functionality required to fulfill the request.",expectsEmptyBody:false,isCacheable:"heuristic",requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Use a different method or endpoint; this feature is not supported.",commonCauses:["Server lacks support for the requested method."],relatedStatuses:[405]}},502:{code:502,phrase:"Bad Gateway",category:"Server Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.6.3"),description:"The server, while acting as a gateway or proxy, received an invalid response from an inbound server.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"exponential-backoff",agentAction:"Retry with backoff; the upstream is likely transiently unhealthy.",commonCauses:["Upstream returned malformed response","Origin briefly down"],relatedStatuses:[503,504]}},503:{code:503,phrase:"Service Unavailable",category:"Server Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.6.4"),description:"The server is currently unable to handle the request due to a temporary overload or scheduled maintenance.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Retry-After",required:false,purpose:"Indicates how long the service is expected to be unavailable."}],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"respect-retry-after",agentAction:"Respect Retry-After if present; otherwise back off exponentially.",commonCauses:["Overload","Scheduled maintenance","Circuit breaker open"],relatedStatuses:[429,502,504]}},504:{code:504,phrase:"Gateway Timeout",category:"Server Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.6.5"),description:"The server, while acting as a gateway or proxy, did not receive a timely response from an upstream server.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"exponential-backoff",agentAction:"Retry with backoff; consider increasing the upstream timeout.",commonCauses:["Slow upstream","Network partition"],relatedStatuses:[408,502]}},505:{code:505,phrase:"HTTP Version Not Supported",category:"Server Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.6.6"),description:"The server does not support, or refuses to support, the major version of HTTP that was used in the request.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Downgrade or upgrade to a supported HTTP version and retry.",commonCauses:["Client speaks HTTP version the server has disabled."],relatedStatuses:[426]}},506:{code:506,phrase:"Variant Also Negotiates",category:"Server Error",source:"IANA",rfc:"RFC2295",specUrl:"https://datatracker.ietf.org/doc/html/rfc2295#section-8.1",description:"Transparent content negotiation for the request results in a circular reference.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Server-side configuration bug; report to the operator.",commonCauses:["Misconfigured content negotiation chain."],relatedStatuses:[]}},507:{code:507,phrase:"Insufficient Storage",category:"Server Error",source:"IANA",rfc:"RFC4918",specUrl:"https://datatracker.ietf.org/doc/html/rfc4918#section-11.5",description:"WebDAV: the method could not be performed on the resource because the server is unable to store the representation needed to successfully complete the request.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"exponential-backoff",agentAction:"Retry later or reduce payload size; storage is full upstream.",commonCauses:["Disk full on server."],relatedStatuses:[413]}},508:{code:508,phrase:"Loop Detected",category:"Server Error",source:"IANA",rfc:"RFC5842",specUrl:"https://datatracker.ietf.org/doc/html/rfc5842#section-7.2",description:"WebDAV: the server terminated an operation because it encountered an infinite loop while processing a request with Depth: infinity.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Restructure the request to avoid the cycle.",commonCauses:["Cyclic WebDAV bindings."],relatedStatuses:[]}},510:{code:510,phrase:"Not Extended",category:"Server Error",source:"IANA",rfc:"RFC2774",specUrl:"https://datatracker.ietf.org/doc/html/rfc2774#section-7",description:"Further extensions to the request are required for the server to fulfill it.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:true,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Add the required HTTP extension declarations and retry.",commonCauses:["Server requires HTTP extension framework."],relatedStatuses:[]}},511:{code:511,phrase:"Network Authentication Required",category:"Server Error",source:"IANA",rfc:"RFC6585",specUrl:"https://datatracker.ietf.org/doc/html/rfc6585#section-6",description:"The client needs to authenticate to gain network access. Intended for captive portals.",expectsEmptyBody:false,isCacheable:false,requiresAuth:true,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"immediate",agentAction:"Complete the captive portal flow, then retry.",commonCauses:["Public Wi-Fi captive portal."],relatedStatuses:[401]}}};var f={WEB_SERVER_RETURNED_UNKNOWN_ERROR:520,WEB_SERVER_IS_DOWN:521,CONNECTION_TIMED_OUT:522,ORIGIN_IS_UNREACHABLE:523,TIMEOUT_OCCURRED:524,SSL_HANDSHAKE_FAILED:525,INVALID_SSL_CERTIFICATE:526,RAILGUN_ERROR:527,ORIGIN_DNS_ERROR:530},r="https://developers.cloudflare.com/support/troubleshooting/http-status-codes/5xx-errors/",s={520:{code:520,phrase:"Web Server Returned an Unknown Error",category:"Vendor Extension",source:"Cloudflare",rfc:null,specUrl:`${r}#error-520-web-server-returns-an-unknown-error`,description:"The origin server returned an empty, unknown, or unexpected response to Cloudflare.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"exponential-backoff",agentAction:"Retry; if persistent, the origin is misbehaving and needs operator attention.",commonCauses:["Origin crashed mid-response","Origin returned malformed HTTP"],relatedStatuses:[502]}},521:{code:521,phrase:"Web Server Is Down",category:"Vendor Extension",source:"Cloudflare",rfc:null,specUrl:`${r}#error-521-web-server-is-down`,description:"The origin server refused the connection from Cloudflare. Cloudflare could not establish a TCP connection.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"exponential-backoff",agentAction:"Retry; verify origin is running and not blocking Cloudflare IPs.",commonCauses:["Origin down","Cloudflare IPs blocked at firewall"],relatedStatuses:[502,503]}},522:{code:522,phrase:"Connection Timed Out",category:"Vendor Extension",source:"Cloudflare",rfc:null,specUrl:`${r}#error-522-connection-timed-out`,description:"Cloudflare could not negotiate a TCP handshake with the origin server before timing out.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"exponential-backoff",agentAction:"Retry; investigate origin network reachability.",commonCauses:["Origin overloaded","Network partition between CF and origin"],relatedStatuses:[504]}},523:{code:523,phrase:"Origin Is Unreachable",category:"Vendor Extension",source:"Cloudflare",rfc:null,specUrl:`${r}#error-523-origin-is-unreachable`,description:"Cloudflare could not reach the origin server, commonly due to a routing/BGP issue or invalid DNS record.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"exponential-backoff",agentAction:"Retry; if persistent, check origin DNS and routing.",commonCauses:["DNS record points to wrong IP","BGP routing problem"],relatedStatuses:[530]}},524:{code:524,phrase:"A Timeout Occurred",category:"Vendor Extension",source:"Cloudflare",rfc:null,specUrl:`${r}#error-524-a-timeout-occurred`,description:"Cloudflare successfully connected and sent data to the origin, but the origin took too long to respond with an HTTP response.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"exponential-backoff",agentAction:"Retry; for long-running requests, consider an async pattern (e.g., 202 + polling).",commonCauses:["Long-running origin request exceeded the 100-second CF limit."],relatedStatuses:[504,408]}},525:{code:525,phrase:"SSL Handshake Failed",category:"Vendor Extension",source:"Cloudflare",rfc:null,specUrl:`${r}#error-525-ssl-handshake-failed`,description:"Cloudflare could not negotiate an SSL/TLS handshake with the origin server.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Operator action: align cipher suites and TLS versions between CF and origin.",commonCauses:["No common cipher suite","TLS version mismatch"],relatedStatuses:[526]}},526:{code:526,phrase:"Invalid SSL Certificate",category:"Vendor Extension",source:"Cloudflare",rfc:null,specUrl:`${r}#error-526-invalid-ssl-certificate`,description:"Cloudflare could not validate the SSL certificate on the origin web server when SSL Full (strict) mode is active.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Operator action: install a valid origin certificate or relax SSL mode.",commonCauses:["Expired or self-signed origin cert","Hostname mismatch"],relatedStatuses:[525]}},527:{code:527,phrase:"Railgun Error",category:"Vendor Extension",source:"Cloudflare",rfc:null,specUrl:`${r}#error-527-railgun-listener-to-origin`,description:"Indicates an error connecting between Cloudflare and the origin's Railgun (rwengine) server.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:true,guidance:{isRetryable:true,retryStrategy:"exponential-backoff",agentAction:"Retry; Railgun is largely deprecated in favor of Argo Smart Routing.",commonCauses:["Railgun listener unreachable."],relatedStatuses:[]}},530:{code:530,phrase:"Origin DNS Error",category:"Vendor Extension",source:"Cloudflare",rfc:null,specUrl:"https://developers.cloudflare.com/support/troubleshooting/cloudflare-errors/troubleshooting-cloudflare-1xxx-errors/",description:"A 530 response is typically returned alongside a Cloudflare 1xxx error displayed in the body, indicating an origin DNS or worker failure.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"exponential-backoff",agentAction:"Inspect the body for the embedded 1xxx code; resolve DNS or Worker error.",commonCauses:["Origin DNS resolution failure","Worker script error"],relatedStatuses:[523]}}};var g={NO_RESPONSE:444,REQUEST_HEADER_TOO_LARGE:494,SSL_CERTIFICATE_ERROR:495,SSL_CERTIFICATE_REQUIRED:496,HTTP_REQUEST_SENT_TO_HTTPS_PORT:497,CLIENT_CLOSED_REQUEST:499},o={444:{code:444,phrase:"No Response",category:"Vendor Extension",source:"Nginx",rfc:null,specUrl:"https://nginx.org/en/docs/http/ngx_http_rewrite_module.html#return",description:'Nginx-specific code instructing the server to close the connection without sending any response headers (used via "return 444;").',expectsEmptyBody:true,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Treat as a deliberate drop; do not retry the same request.",commonCauses:["Anti-abuse rule","Malformed request blocked at the edge"],relatedStatuses:[]}},494:{code:494,phrase:"Request Header Too Large",category:"Vendor Extension",source:"Nginx",rfc:null,specUrl:"https://nginx.org/en/docs/http/ngx_http_core_module.html#large_client_header_buffers",description:"Nginx-specific code returned when the request headers exceed large_client_header_buffers.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Trim headers/cookies and retry.",commonCauses:["Oversized cookie jar","Long Authorization header"],relatedStatuses:[431]}},495:{code:495,phrase:"SSL Certificate Error",category:"Vendor Extension",source:"Nginx",rfc:null,specUrl:"https://nginx.org/en/docs/http/ngx_http_ssl_module.html#ssl_verify_client",description:"Nginx-specific code returned when client certificate verification fails.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Provide a valid client certificate and retry.",commonCauses:["Expired or untrusted client certificate."],relatedStatuses:[496]}},496:{code:496,phrase:"SSL Certificate Required",category:"Vendor Extension",source:"Nginx",rfc:null,specUrl:"https://nginx.org/en/docs/http/ngx_http_ssl_module.html#ssl_verify_client",description:"Nginx-specific code returned when a client certificate was required but not provided.",expectsEmptyBody:false,isCacheable:false,requiresAuth:true,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Attach a client certificate to the TLS connection and retry.",commonCauses:["Mutual TLS endpoint reached without a client cert."],relatedStatuses:[495]}},497:{code:497,phrase:"HTTP Request Sent to HTTPS Port",category:"Vendor Extension",source:"Nginx",rfc:null,specUrl:"https://nginx.org/en/docs/http/ngx_http_ssl_module.html#errors",description:"Nginx-specific code returned when a plain HTTP request is sent to an HTTPS port.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"immediate",agentAction:"Reissue the request over HTTPS.",commonCauses:["Client used http:// against an https-only port."],relatedStatuses:[426]}},499:{code:499,phrase:"Client Closed Request",category:"Vendor Extension",source:"Nginx",rfc:null,specUrl:"https://nginx.org/en/docs/http/ngx_http_core_module.html",description:"Nginx-specific code logged when the client closes the connection while the server is still processing the request.",expectsEmptyBody:true,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"No action; this code is observed in access logs, not received by the client.",commonCauses:["Client aborted the request","Network drop"],relatedStatuses:[408]}}};var i=Object.freeze({...a,...s,...o}),R=t=>i[t];var n=t=>t>=100&&t<200,E=t=>t>=200&&t<300,T=t=>t>=300&&t<400,v=t=>t>=400&&t<500,x=t=>t>=500&&t<600,q=t=>t>=400,c=new Set([408,421,425,426,429,500,502,503,504,507,511,520,521,522,523,524,527,530,497]),I=t=>c.has(t),l=new Set([204,205,304,444,499]),N=t=>n(t)||l.has(t),d=new Set([200,203,204,206,226,300,301,308,404,405,410,414,501]),U=t=>d.has(t)?"heuristic":false,u=new Set([401,407,496,511]),F=t=>u.has(t);
+exports.CloudflareRegistry=s;exports.CloudflareStatus=f;exports.CompleteRegistry=i;exports.IanaRegistry=a;exports.IanaStatus=p;exports.NginxRegistry=o;exports.NginxStatus=g;exports.getMetadata=R;exports.hasEmptyBody=N;exports.isCacheable=U;exports.isClientError=v;exports.isError=q;exports.isInformational=n;exports.isRedirection=T;exports.isRetryable=I;exports.isServerError=x;exports.isSuccess=E;exports.requiresAuth=F;

index.d.cts

+import { d as HttpStatusRegistryMap, c as HttpStatusMetadata } from './types-D9bAZ7ge.cjs';
+export { H as HttpMethod, a as HttpStatusCategory, b as HttpStatusGuidance, e as HttpStatusSource, R as RelatedHeader, f as RetryStrategy } from './types-D9bAZ7ge.cjs';
+export { IanaRegistry, IanaStatus, IanaStatusCode, IanaStatusName } from './iana/index.cjs';
+export { CloudflareRegistry, CloudflareStatus, CloudflareStatusCode, CloudflareStatusName } from './cloudflare/index.cjs';
+export { NginxRegistry, NginxStatus, NginxStatusCode, NginxStatusName } from './nginx/index.cjs';
+export { hasEmptyBody, isCacheable, isClientError, isError, isInformational, isRedirection, isRetryable, isServerError, isSuccess, requiresAuth } from './utils/index.cjs';
+
+declare const CompleteRegistry: HttpStatusRegistryMap;
+/**
+ * Returns full per-code metadata, or `undefined` if the code is not in any
+ * known registry. Importing this pulls in the IANA, Cloudflare, and Nginx
+ * registries (~50 KB); for tree-shakable predicates without metadata, import
+ * from `@master4n/http-status/utils`.
+ */
+declare const getMetadata: (code: number) => HttpStatusMetadata | undefined;
+
+export { CompleteRegistry, HttpStatusMetadata, HttpStatusRegistryMap, getMetadata };

index.js

+var p={CONTINUE:100,SWITCHING_PROTOCOLS:101,PROCESSING:102,EARLY_HINTS:103,OK:200,CREATED:201,ACCEPTED:202,NON_AUTHORITATIVE_INFORMATION:203,NO_CONTENT:204,RESET_CONTENT:205,PARTIAL_CONTENT:206,MULTI_STATUS:207,ALREADY_REPORTED:208,IM_USED:226,MULTIPLE_CHOICES:300,MOVED_PERMANENTLY:301,FOUND:302,SEE_OTHER:303,NOT_MODIFIED:304,USE_PROXY:305,TEMPORARY_REDIRECT:307,PERMANENT_REDIRECT:308,BAD_REQUEST:400,UNAUTHORIZED:401,PAYMENT_REQUIRED:402,FORBIDDEN:403,NOT_FOUND:404,METHOD_NOT_ALLOWED:405,NOT_ACCEPTABLE:406,PROXY_AUTHENTICATION_REQUIRED:407,REQUEST_TIMEOUT:408,CONFLICT:409,GONE:410,LENGTH_REQUIRED:411,PRECONDITION_FAILED:412,CONTENT_TOO_LARGE:413,URI_TOO_LONG:414,UNSUPPORTED_MEDIA_TYPE:415,RANGE_NOT_SATISFIABLE:416,EXPECTATION_FAILED:417,IM_A_TEAPOT:418,MISDIRECTED_REQUEST:421,UNPROCESSABLE_CONTENT:422,LOCKED:423,FAILED_DEPENDENCY:424,TOO_EARLY:425,UPGRADE_REQUIRED:426,PRECONDITION_REQUIRED:428,TOO_MANY_REQUESTS:429,REQUEST_HEADER_FIELDS_TOO_LARGE:431,UNAVAILABLE_FOR_LEGAL_REASONS:451,INTERNAL_SERVER_ERROR:500,NOT_IMPLEMENTED:501,BAD_GATEWAY:502,SERVICE_UNAVAILABLE:503,GATEWAY_TIMEOUT:504,HTTP_VERSION_NOT_SUPPORTED:505,VARIANT_ALSO_NEGOTIATES:506,INSUFFICIENT_STORAGE:507,LOOP_DETECTED:508,NOT_EXTENDED:510,NETWORK_AUTHENTICATION_REQUIRED:511},e=t=>`https://datatracker.ietf.org/doc/html/rfc9110#section-${t}`,a={100:{code:100,phrase:"Continue",category:"Informational",source:"IANA",rfc:"RFC9110",specUrl:e("15.2.1"),description:"The initial part of a request has been received and the client should continue to send the remainder of the request, or ignore the response if the request is already complete.",expectsEmptyBody:true,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Expect",required:false,purpose:"Originating request header that triggers a 100 response."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Continue sending the request body; treat as a successful handshake.",commonCauses:["Client sent Expect: 100-continue before a large body."],relatedStatuses:[417]}},101:{code:101,phrase:"Switching Protocols",category:"Informational",source:"IANA",rfc:"RFC9110",specUrl:e("15.2.2"),description:"The server understands and is willing to comply with the client request, via the Upgrade header field, for a change in the application protocol being used on this connection.",expectsEmptyBody:true,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Upgrade",required:true,purpose:"Lists the protocol(s) being switched to."},{name:"Connection",required:true,purpose:'Must include "Upgrade".'}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Switch to the protocol named in the Upgrade header (e.g., WebSocket).",commonCauses:["Client requested protocol upgrade (WebSocket, HTTP/2 cleartext)."],relatedStatuses:[426]}},102:{code:102,phrase:"Processing",category:"Informational",source:"IANA",rfc:"RFC2518",specUrl:"https://datatracker.ietf.org/doc/html/rfc2518#section-10.1",description:"WebDAV interim response indicating that the server has accepted the complete request but has not yet completed it. Deprecated by some clients.",expectsEmptyBody:true,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:true,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Keep the connection open and wait for the final response.",commonCauses:["Long-running WebDAV operation."],relatedStatuses:[]}},103:{code:103,phrase:"Early Hints",category:"Informational",source:"IANA",rfc:"RFC8297",specUrl:"https://datatracker.ietf.org/doc/html/rfc8297#section-2",description:"Used to return some response headers before the final HTTP message, typically to allow the client to preload resources via Link headers.",expectsEmptyBody:true,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Link",required:false,purpose:"Preload/preconnect hints sent before the final response."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Begin preloading hinted resources while awaiting the final response.",commonCauses:["Server-driven preload hints to reduce page load time."],relatedStatuses:[]}},200:{code:200,phrase:"OK",category:"Success",source:"IANA",rfc:"RFC9110",specUrl:e("15.3.1"),description:"The request has succeeded. The payload sent depends on the request method.",expectsEmptyBody:false,isCacheable:"heuristic",requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Parse and use the response body.",commonCauses:["Standard successful request."],relatedStatuses:[201,204,206]}},201:{code:201,phrase:"Created",category:"Success",source:"IANA",rfc:"RFC9110",specUrl:e("15.3.2"),description:"The request has been fulfilled and has resulted in one or more new resources being created. The primary resource URI is given by Location.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Location",required:false,purpose:"URI of the newly created resource."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Read the Location header for the new resource URI.",commonCauses:["Successful POST or PUT that created a resource."],relatedStatuses:[200,202]}},202:{code:202,phrase:"Accepted",category:"Success",source:"IANA",rfc:"RFC9110",specUrl:e("15.3.3"),description:"The request has been accepted for processing, but the processing has not been completed. The request might or might not be eventually acted upon.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Poll the indicated status endpoint or wait for an async callback.",commonCauses:["Async job submission, batch processing."],relatedStatuses:[201,303]}},203:{code:203,phrase:"Non-Authoritative Information",category:"Success",source:"IANA",rfc:"RFC9110",specUrl:e("15.3.4"),description:"The request was successful but the enclosed payload has been modified by a transforming proxy from that of the origin server.",expectsEmptyBody:false,isCacheable:"heuristic",requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Treat as 200 OK but be aware the body may have been transformed by an intermediary.",commonCauses:["Transforming proxy modified the response."],relatedStatuses:[200]}},204:{code:204,phrase:"No Content",category:"Success",source:"IANA",rfc:"RFC9110",specUrl:e("15.3.5"),description:"The server has successfully fulfilled the request and there is no additional content to send in the response payload body.",expectsEmptyBody:true,isCacheable:"heuristic",requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Do not attempt to parse a body; treat as success.",commonCauses:["Successful DELETE or PUT/PATCH that returns no body."],relatedStatuses:[200,205]}},205:{code:205,phrase:"Reset Content",category:"Success",source:"IANA",rfc:"RFC9110",specUrl:e("15.3.6"),description:"The server has fulfilled the request and desires that the user agent reset the document view which caused the request to be sent.",expectsEmptyBody:true,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Clear the originating form or input view.",commonCauses:["Form submission that should reset on success."],relatedStatuses:[204]}},206:{code:206,phrase:"Partial Content",category:"Success",source:"IANA",rfc:"RFC9110",specUrl:e("15.3.7"),description:"The server is successfully fulfilling a range request for the target resource by transferring one or more parts of the selected representation.",expectsEmptyBody:false,isCacheable:"heuristic",requiresAuth:false,safeForMethods:["GET","HEAD"],relatedHeaders:[{name:"Content-Range",required:true,purpose:"Indicates which byte range is in the body."},{name:"Accept-Ranges",required:false,purpose:"Indicates supported range units."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Assemble the byte range with previously fetched parts; resume support.",commonCauses:["Range request for video, large file, or resumable download."],relatedStatuses:[200,416]}},207:{code:207,phrase:"Multi-Status",category:"Success",source:"IANA",rfc:"RFC4918",specUrl:"https://datatracker.ietf.org/doc/html/rfc4918#section-11.1",description:"WebDAV: provides status for multiple independent operations in a single response (multistatus XML).",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Parse the multistatus XML body for per-resource status codes.",commonCauses:["WebDAV PROPFIND, PROPPATCH, COPY, MOVE, DELETE on collections."],relatedStatuses:[208]}},208:{code:208,phrase:"Already Reported",category:"Success",source:"IANA",rfc:"RFC5842",specUrl:"https://datatracker.ietf.org/doc/html/rfc5842#section-7.1",description:"WebDAV: used inside a 207 Multi-Status response to avoid repeatedly enumerating internal members of multiple bindings to the same collection.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Treat as already-enumerated; do not re-fetch.",commonCauses:["WebDAV bindings already reported in the same multistatus."],relatedStatuses:[207]}},226:{code:226,phrase:"IM Used",category:"Success",source:"IANA",rfc:"RFC3229",specUrl:"https://datatracker.ietf.org/doc/html/rfc3229#section-10.4.1",description:"The server has fulfilled a GET request for the resource, and the response is a representation of the result of one or more instance-manipulations applied to the current instance.",expectsEmptyBody:false,isCacheable:"heuristic",requiresAuth:false,safeForMethods:["GET"],relatedHeaders:[{name:"IM",required:false,purpose:"Instance manipulation applied."},{name:"Delta-Base",required:false,purpose:"Base entity tag for delta encoding."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Apply the delta to the cached representation.",commonCauses:["Delta-encoded HTTP response."],relatedStatuses:[200]}},300:{code:300,phrase:"Multiple Choices",category:"Redirection",source:"IANA",rfc:"RFC9110",specUrl:e("15.4.1"),description:"The target resource has more than one representation, each with its own more specific identifier, and information about the alternatives is provided.",expectsEmptyBody:false,isCacheable:"heuristic",requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Location",required:false,purpose:"Server-preferred alternative URI."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Pick a representation from the listed alternatives or follow Location if provided.",commonCauses:["Content negotiation with multiple acceptable variants."],relatedStatuses:[301,302,303]}},301:{code:301,phrase:"Moved Permanently",category:"Redirection",source:"IANA",rfc:"RFC9110",specUrl:e("15.4.2"),description:"The target resource has been assigned a new permanent URI and any future references to this resource ought to use the enclosed URI.",expectsEmptyBody:false,isCacheable:"heuristic",requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Location",required:true,purpose:"New permanent URI."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Follow Location; update bookmarks/links to the new URI.",commonCauses:["Permanent URL change, domain migration, HTTPS upgrade."],relatedStatuses:[308,302]}},302:{code:302,phrase:"Found",category:"Redirection",source:"IANA",rfc:"RFC9110",specUrl:e("15.4.3"),description:"The target resource resides temporarily under a different URI. The client should continue to use the original request URI for future requests.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Location",required:true,purpose:"Temporary URI."}],aliases:["Moved Temporarily"],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Follow Location for this request only; do not cache the redirect.",commonCauses:["Temporary redirect, post-login redirect."],relatedStatuses:[303,307]}},303:{code:303,phrase:"See Other",category:"Redirection",source:"IANA",rfc:"RFC9110",specUrl:e("15.4.4"),description:"The server is redirecting the user agent to a different resource, as indicated by Location, that is intended to provide an indirect response to the original request.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Location",required:true,purpose:"Target URI to GET."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Issue a GET to Location regardless of the original method.",commonCauses:["Post/Redirect/Get pattern after form submission."],relatedStatuses:[302,307]}},304:{code:304,phrase:"Not Modified",category:"Redirection",source:"IANA",rfc:"RFC9110",specUrl:e("15.4.5"),description:"Indicates that the conditional request would have resulted in a 200 OK response if it were not for the fact that the condition evaluated to false.",expectsEmptyBody:true,isCacheable:false,requiresAuth:false,safeForMethods:["GET","HEAD"],relatedHeaders:[{name:"ETag",required:false,purpose:"Validator matching the cached representation."},{name:"Cache-Control",required:false,purpose:"Freshness directives."},{name:"Vary",required:false,purpose:"Headers that affected selection."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Serve from the local cache; the cached representation is still fresh.",commonCauses:["Conditional GET with If-None-Match or If-Modified-Since matched."],relatedStatuses:[200,412]}},305:{code:305,phrase:"Use Proxy",category:"Redirection",source:"IANA",rfc:"RFC9110",specUrl:e("15.4.6"),description:"Deprecated. The requested resource must be accessed through a specified proxy.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:true,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Ignore; modern clients must not honor 305 for security reasons.",commonCauses:["Legacy proxy configuration."],relatedStatuses:[]}},307:{code:307,phrase:"Temporary Redirect",category:"Redirection",source:"IANA",rfc:"RFC9110",specUrl:e("15.4.8"),description:"The target resource resides temporarily under a different URI and the user agent MUST NOT change the request method when following the redirect.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Location",required:true,purpose:"Temporary URI."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Follow Location with the same method and body.",commonCauses:["Temporary redirect where method preservation matters (e.g., POST)."],relatedStatuses:[302,308]}},308:{code:308,phrase:"Permanent Redirect",category:"Redirection",source:"IANA",rfc:"RFC9110",specUrl:e("15.4.9"),description:"The target resource has been assigned a new permanent URI and the user agent MUST NOT change the request method when following the redirect.",expectsEmptyBody:false,isCacheable:"heuristic",requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Location",required:true,purpose:"New permanent URI."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Follow Location with the same method; update stored references.",commonCauses:["Permanent move where method preservation matters."],relatedStatuses:[301,307]}},400:{code:400,phrase:"Bad Request",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.1"),description:"The server cannot or will not process the request due to something that is perceived to be a client error (e.g., malformed syntax, invalid framing).",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Fix the request payload or syntax; do not retry as-is.",commonCauses:["Malformed JSON","Missing required field","Invalid header syntax"],relatedStatuses:[422,415]}},401:{code:401,phrase:"Unauthorized",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.2"),description:"The request has not been applied because it lacks valid authentication credentials for the target resource.",expectsEmptyBody:false,isCacheable:false,requiresAuth:true,safeForMethods:"all",relatedHeaders:[{name:"WWW-Authenticate",required:true,purpose:"Challenge describing the auth scheme."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Acquire valid credentials and retry with an Authorization header.",commonCauses:["Missing or expired token","Wrong credentials","Token revoked"],relatedStatuses:[403,407]}},402:{code:402,phrase:"Payment Required",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.3"),description:"Reserved for future use. Originally intended for digital payment systems.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Surface payment/billing requirement to the user; do not auto-retry.",commonCauses:["API quota exhausted on paid tier","Subscription expired"],relatedStatuses:[403,429]}},403:{code:403,phrase:"Forbidden",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.4"),description:"The server understood the request but refuses to authorize it. Re-authenticating will not help.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Do not retry; the principal lacks permission for this resource.",commonCauses:["Insufficient role/scope","IP blocked","CSRF check failed"],relatedStatuses:[401,451]}},404:{code:404,phrase:"Not Found",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.5"),description:"The origin server did not find a current representation for the target resource or is not willing to disclose that one exists.",expectsEmptyBody:false,isCacheable:"heuristic",requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Verify the URL; do not retry unless the resource is expected to appear later.",commonCauses:["Typo in URL","Resource deleted","Privacy-preserving hide of 403"],relatedStatuses:[410,403]}},405:{code:405,phrase:"Method Not Allowed",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.6"),description:"The method received in the request-line is known by the origin server but not supported by the target resource.",expectsEmptyBody:false,isCacheable:"heuristic",requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Allow",required:true,purpose:"Lists the methods supported by the target resource."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Inspect Allow header and reissue with a permitted method.",commonCauses:["Wrong HTTP verb for the endpoint."],relatedStatuses:[501]}},406:{code:406,phrase:"Not Acceptable",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.7"),description:"The target resource does not have a current representation that would be acceptable to the user agent according to the proactive negotiation header fields.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Accept",required:false,purpose:"Originating preference header."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Relax Accept/Accept-Language constraints and retry.",commonCauses:["No representation matches the client's Accept headers."],relatedStatuses:[415]}},407:{code:407,phrase:"Proxy Authentication Required",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.8"),description:"Similar to 401 but indicates that the client needs to authenticate itself in order to use a proxy.",expectsEmptyBody:false,isCacheable:false,requiresAuth:true,safeForMethods:"all",relatedHeaders:[{name:"Proxy-Authenticate",required:true,purpose:"Proxy auth challenge."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Supply Proxy-Authorization and retry.",commonCauses:["Corporate proxy requiring authentication."],relatedStatuses:[401]}},408:{code:408,phrase:"Request Timeout",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.9"),description:"The server did not receive a complete request message within the time that it was prepared to wait.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"exponential-backoff",agentAction:"Retry the request with backoff; consider increasing client timeout.",commonCauses:["Slow client","Network congestion","Idle keep-alive connection closed"],relatedStatuses:[504]}},409:{code:409,phrase:"Conflict",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.10"),description:"The request could not be completed due to a conflict with the current state of the target resource.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Re-read the current resource state and resolve the conflict before resubmitting.",commonCauses:["Concurrent edit collision","Duplicate resource creation","Version mismatch"],relatedStatuses:[412,428]}},410:{code:410,phrase:"Gone",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.11"),description:"Access to the target resource is no longer available at the origin server and this condition is likely to be permanent.",expectsEmptyBody:false,isCacheable:"heuristic",requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Remove any cached references; do not retry.",commonCauses:["Permanently deleted resource."],relatedStatuses:[404]}},411:{code:411,phrase:"Length Required",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.12"),description:"The server refuses to accept the request without a defined Content-Length.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:["POST","PUT","PATCH"],relatedHeaders:[{name:"Content-Length",required:true,purpose:"Length of the request body in octets."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Add Content-Length and retry.",commonCauses:["Chunked transfer rejected by server."],relatedStatuses:[]}},412:{code:412,phrase:"Precondition Failed",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.13"),description:"One or more conditions given in the request header fields evaluated to false when tested on the server.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"If-Match",required:false,purpose:"Originating precondition."},{name:"If-Unmodified-Since",required:false,purpose:"Originating precondition."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Re-fetch current ETag/Last-Modified and retry with the new validator.",commonCauses:["Stale If-Match","Optimistic concurrency control mismatch"],relatedStatuses:[409,428]}},413:{code:413,phrase:"Content Too Large",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.14"),description:"The server is refusing to process a request because the request content is larger than the server is willing or able to process.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:["POST","PUT","PATCH"],relatedHeaders:[{name:"Retry-After",required:false,purpose:"Indicates when the condition may be temporary."}],aliases:["Payload Too Large","Request Entity Too Large"],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Reduce body size, chunk the upload, or use a different endpoint.",commonCauses:["Upload exceeds server limit."],relatedStatuses:[]}},414:{code:414,phrase:"URI Too Long",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.15"),description:"The server is refusing to service the request because the request-target is longer than the server is willing to interpret.",expectsEmptyBody:false,isCacheable:"heuristic",requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:["Request-URI Too Long"],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Shorten the URL; move parameters into a POST body.",commonCauses:["Excessive query string","Loop generating long redirect URI"],relatedStatuses:[]}},415:{code:415,phrase:"Unsupported Media Type",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.16"),description:"The server is refusing to service the request because the content is in a format not supported by this method on the target resource.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:["POST","PUT","PATCH"],relatedHeaders:[{name:"Accept",required:false,purpose:"Indicates supported response types."},{name:"Accept-Encoding",required:false,purpose:"Indicates supported encodings."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Set Content-Type to a supported value and retry.",commonCauses:["Wrong Content-Type","Unsupported encoding"],relatedStatuses:[406]}},416:{code:416,phrase:"Range Not Satisfiable",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.17"),description:"None of the ranges in the request's Range header field overlap the current extent of the selected resource, or the set of ranges requested has been rejected.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:["GET","HEAD"],relatedHeaders:[{name:"Content-Range",required:false,purpose:"Total size of the representation."}],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Re-check the resource length and request a valid range.",commonCauses:["Range beyond resource length."],relatedStatuses:[206]}},417:{code:417,phrase:"Expectation Failed",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.18"),description:"The expectation given in the request's Expect header field could not be met by at least one of the inbound servers.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Remove the Expect header and retry.",commonCauses:["Server does not support Expect: 100-continue."],relatedStatuses:[100]}},418:{code:418,phrase:"I'm a teapot",category:"Client Error",source:"IANA",rfc:"RFC2324",specUrl:"https://datatracker.ietf.org/doc/html/rfc2324#section-2.3.2",description:"Any attempt to brew coffee with a teapot should result in the error code 418 I'm a teapot. A joke status from the Hyper Text Coffee Pot Control Protocol.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Treat as a humorous easter egg or anti-bot signal; do not retry.",commonCauses:["Server is signaling a refusal humorously."],relatedStatuses:[]}},421:{code:421,phrase:"Misdirected Request",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.20"),description:"The request was directed at a server that is not able to produce a response. This can be sent by a server that is not configured to produce responses for the combination of scheme and authority included in the request URI.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"immediate",agentAction:"Re-resolve the host and open a new connection before retrying.",commonCauses:["HTTP/2 connection coalescing to wrong origin."],relatedStatuses:[]}},422:{code:422,phrase:"Unprocessable Content",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.21"),description:"The server understands the content type of the request content and the syntax of the request content is correct, but it was unable to process the contained instructions.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:["Unprocessable Entity"],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Validate semantic constraints (e.g., schema validation errors) and resubmit.",commonCauses:["Schema validation failure","Business rule violation"],relatedStatuses:[400]}},423:{code:423,phrase:"Locked",category:"Client Error",source:"IANA",rfc:"RFC4918",specUrl:"https://datatracker.ietf.org/doc/html/rfc4918#section-11.3",description:"WebDAV: the source or destination resource is locked.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"exponential-backoff",agentAction:"Acquire the lock or wait for it to release, then retry.",commonCauses:["WebDAV resource locked by another client."],relatedStatuses:[424]}},424:{code:424,phrase:"Failed Dependency",category:"Client Error",source:"IANA",rfc:"RFC4918",specUrl:"https://datatracker.ietf.org/doc/html/rfc4918#section-11.4",description:"WebDAV: the method could not be performed on the resource because the requested action depended on another action which failed.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Resolve the failing prerequisite action first.",commonCauses:["Prior WebDAV operation in the same request failed."],relatedStatuses:[423]}},425:{code:425,phrase:"Too Early",category:"Client Error",source:"IANA",rfc:"RFC8470",specUrl:"https://datatracker.ietf.org/doc/html/rfc8470#section-5.2",description:"Indicates that the server is unwilling to risk processing a request that might be replayed (e.g., TLS 1.3 early data).",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Early-Data",required:false,purpose:"Indicates the request was sent in TLS early data."}],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"immediate",agentAction:"Retry the request after the TLS handshake completes.",commonCauses:["Request sent in TLS 1.3 0-RTT early data."],relatedStatuses:[]}},426:{code:426,phrase:"Upgrade Required",category:"Client Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.5.22"),description:"The server refuses to perform the request using the current protocol but might be willing to do so after the client upgrades to a different protocol.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Upgrade",required:true,purpose:"Protocols the server is willing to switch to."},{name:"Connection",required:true,purpose:'Must include "Upgrade".'}],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"immediate",agentAction:"Upgrade to the protocol indicated in Upgrade and retry.",commonCauses:["Server requires HTTPS or HTTP/2."],relatedStatuses:[101]}},428:{code:428,phrase:"Precondition Required",category:"Client Error",source:"IANA",rfc:"RFC6585",specUrl:"https://datatracker.ietf.org/doc/html/rfc6585#section-3",description:"The origin server requires the request to be conditional. Intended to prevent the lost update problem.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Add If-Match or If-Unmodified-Since and retry.",commonCauses:["Server enforces optimistic concurrency control."],relatedStatuses:[412]}},429:{code:429,phrase:"Too Many Requests",category:"Client Error",source:"IANA",rfc:"RFC6585",specUrl:"https://datatracker.ietf.org/doc/html/rfc6585#section-4",description:'The user has sent too many requests in a given amount of time ("rate limiting").',expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Retry-After",required:false,purpose:"Indicates how long to wait before retrying."}],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"respect-retry-after",agentAction:"Wait the duration in Retry-After (or back off exponentially) and retry.",commonCauses:["Rate limit exceeded."],relatedStatuses:[503,509]}},431:{code:431,phrase:"Request Header Fields Too Large",category:"Client Error",source:"IANA",rfc:"RFC6585",specUrl:"https://datatracker.ietf.org/doc/html/rfc6585#section-5",description:"The server is unwilling to process the request because its header fields are too large.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Trim cookies/headers and retry.",commonCauses:["Oversized cookie jar","Long Authorization token"],relatedStatuses:[]}},451:{code:451,phrase:"Unavailable For Legal Reasons",category:"Client Error",source:"IANA",rfc:"RFC7725",specUrl:"https://datatracker.ietf.org/doc/html/rfc7725#section-3",description:"The server is denying access to the resource as a consequence of a legal demand.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Surface the legal blockage to the user; do not retry.",commonCauses:["Court order","Government censorship","DMCA takedown"],relatedStatuses:[403]}},500:{code:500,phrase:"Internal Server Error",category:"Server Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.6.1"),description:"The server encountered an unexpected condition that prevented it from fulfilling the request.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"exponential-backoff",agentAction:"Retry idempotent requests with backoff; report to the operator if persistent.",commonCauses:["Unhandled exception","Database failure","Misconfiguration"],relatedStatuses:[502,503]}},501:{code:501,phrase:"Not Implemented",category:"Server Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.6.2"),description:"The server does not support the functionality required to fulfill the request.",expectsEmptyBody:false,isCacheable:"heuristic",requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Use a different method or endpoint; this feature is not supported.",commonCauses:["Server lacks support for the requested method."],relatedStatuses:[405]}},502:{code:502,phrase:"Bad Gateway",category:"Server Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.6.3"),description:"The server, while acting as a gateway or proxy, received an invalid response from an inbound server.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"exponential-backoff",agentAction:"Retry with backoff; the upstream is likely transiently unhealthy.",commonCauses:["Upstream returned malformed response","Origin briefly down"],relatedStatuses:[503,504]}},503:{code:503,phrase:"Service Unavailable",category:"Server Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.6.4"),description:"The server is currently unable to handle the request due to a temporary overload or scheduled maintenance.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[{name:"Retry-After",required:false,purpose:"Indicates how long the service is expected to be unavailable."}],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"respect-retry-after",agentAction:"Respect Retry-After if present; otherwise back off exponentially.",commonCauses:["Overload","Scheduled maintenance","Circuit breaker open"],relatedStatuses:[429,502,504]}},504:{code:504,phrase:"Gateway Timeout",category:"Server Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.6.5"),description:"The server, while acting as a gateway or proxy, did not receive a timely response from an upstream server.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"exponential-backoff",agentAction:"Retry with backoff; consider increasing the upstream timeout.",commonCauses:["Slow upstream","Network partition"],relatedStatuses:[408,502]}},505:{code:505,phrase:"HTTP Version Not Supported",category:"Server Error",source:"IANA",rfc:"RFC9110",specUrl:e("15.6.6"),description:"The server does not support, or refuses to support, the major version of HTTP that was used in the request.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Downgrade or upgrade to a supported HTTP version and retry.",commonCauses:["Client speaks HTTP version the server has disabled."],relatedStatuses:[426]}},506:{code:506,phrase:"Variant Also Negotiates",category:"Server Error",source:"IANA",rfc:"RFC2295",specUrl:"https://datatracker.ietf.org/doc/html/rfc2295#section-8.1",description:"Transparent content negotiation for the request results in a circular reference.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Server-side configuration bug; report to the operator.",commonCauses:["Misconfigured content negotiation chain."],relatedStatuses:[]}},507:{code:507,phrase:"Insufficient Storage",category:"Server Error",source:"IANA",rfc:"RFC4918",specUrl:"https://datatracker.ietf.org/doc/html/rfc4918#section-11.5",description:"WebDAV: the method could not be performed on the resource because the server is unable to store the representation needed to successfully complete the request.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"exponential-backoff",agentAction:"Retry later or reduce payload size; storage is full upstream.",commonCauses:["Disk full on server."],relatedStatuses:[413]}},508:{code:508,phrase:"Loop Detected",category:"Server Error",source:"IANA",rfc:"RFC5842",specUrl:"https://datatracker.ietf.org/doc/html/rfc5842#section-7.2",description:"WebDAV: the server terminated an operation because it encountered an infinite loop while processing a request with Depth: infinity.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Restructure the request to avoid the cycle.",commonCauses:["Cyclic WebDAV bindings."],relatedStatuses:[]}},510:{code:510,phrase:"Not Extended",category:"Server Error",source:"IANA",rfc:"RFC2774",specUrl:"https://datatracker.ietf.org/doc/html/rfc2774#section-7",description:"Further extensions to the request are required for the server to fulfill it.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:true,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Add the required HTTP extension declarations and retry.",commonCauses:["Server requires HTTP extension framework."],relatedStatuses:[]}},511:{code:511,phrase:"Network Authentication Required",category:"Server Error",source:"IANA",rfc:"RFC6585",specUrl:"https://datatracker.ietf.org/doc/html/rfc6585#section-6",description:"The client needs to authenticate to gain network access. Intended for captive portals.",expectsEmptyBody:false,isCacheable:false,requiresAuth:true,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"immediate",agentAction:"Complete the captive portal flow, then retry.",commonCauses:["Public Wi-Fi captive portal."],relatedStatuses:[401]}}};var f={WEB_SERVER_RETURNED_UNKNOWN_ERROR:520,WEB_SERVER_IS_DOWN:521,CONNECTION_TIMED_OUT:522,ORIGIN_IS_UNREACHABLE:523,TIMEOUT_OCCURRED:524,SSL_HANDSHAKE_FAILED:525,INVALID_SSL_CERTIFICATE:526,RAILGUN_ERROR:527,ORIGIN_DNS_ERROR:530},r="https://developers.cloudflare.com/support/troubleshooting/http-status-codes/5xx-errors/",s={520:{code:520,phrase:"Web Server Returned an Unknown Error",category:"Vendor Extension",source:"Cloudflare",rfc:null,specUrl:`${r}#error-520-web-server-returns-an-unknown-error`,description:"The origin server returned an empty, unknown, or unexpected response to Cloudflare.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"exponential-backoff",agentAction:"Retry; if persistent, the origin is misbehaving and needs operator attention.",commonCauses:["Origin crashed mid-response","Origin returned malformed HTTP"],relatedStatuses:[502]}},521:{code:521,phrase:"Web Server Is Down",category:"Vendor Extension",source:"Cloudflare",rfc:null,specUrl:`${r}#error-521-web-server-is-down`,description:"The origin server refused the connection from Cloudflare. Cloudflare could not establish a TCP connection.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"exponential-backoff",agentAction:"Retry; verify origin is running and not blocking Cloudflare IPs.",commonCauses:["Origin down","Cloudflare IPs blocked at firewall"],relatedStatuses:[502,503]}},522:{code:522,phrase:"Connection Timed Out",category:"Vendor Extension",source:"Cloudflare",rfc:null,specUrl:`${r}#error-522-connection-timed-out`,description:"Cloudflare could not negotiate a TCP handshake with the origin server before timing out.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"exponential-backoff",agentAction:"Retry; investigate origin network reachability.",commonCauses:["Origin overloaded","Network partition between CF and origin"],relatedStatuses:[504]}},523:{code:523,phrase:"Origin Is Unreachable",category:"Vendor Extension",source:"Cloudflare",rfc:null,specUrl:`${r}#error-523-origin-is-unreachable`,description:"Cloudflare could not reach the origin server, commonly due to a routing/BGP issue or invalid DNS record.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"exponential-backoff",agentAction:"Retry; if persistent, check origin DNS and routing.",commonCauses:["DNS record points to wrong IP","BGP routing problem"],relatedStatuses:[530]}},524:{code:524,phrase:"A Timeout Occurred",category:"Vendor Extension",source:"Cloudflare",rfc:null,specUrl:`${r}#error-524-a-timeout-occurred`,description:"Cloudflare successfully connected and sent data to the origin, but the origin took too long to respond with an HTTP response.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"exponential-backoff",agentAction:"Retry; for long-running requests, consider an async pattern (e.g., 202 + polling).",commonCauses:["Long-running origin request exceeded the 100-second CF limit."],relatedStatuses:[504,408]}},525:{code:525,phrase:"SSL Handshake Failed",category:"Vendor Extension",source:"Cloudflare",rfc:null,specUrl:`${r}#error-525-ssl-handshake-failed`,description:"Cloudflare could not negotiate an SSL/TLS handshake with the origin server.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Operator action: align cipher suites and TLS versions between CF and origin.",commonCauses:["No common cipher suite","TLS version mismatch"],relatedStatuses:[526]}},526:{code:526,phrase:"Invalid SSL Certificate",category:"Vendor Extension",source:"Cloudflare",rfc:null,specUrl:`${r}#error-526-invalid-ssl-certificate`,description:"Cloudflare could not validate the SSL certificate on the origin web server when SSL Full (strict) mode is active.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Operator action: install a valid origin certificate or relax SSL mode.",commonCauses:["Expired or self-signed origin cert","Hostname mismatch"],relatedStatuses:[525]}},527:{code:527,phrase:"Railgun Error",category:"Vendor Extension",source:"Cloudflare",rfc:null,specUrl:`${r}#error-527-railgun-listener-to-origin`,description:"Indicates an error connecting between Cloudflare and the origin's Railgun (rwengine) server.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:true,guidance:{isRetryable:true,retryStrategy:"exponential-backoff",agentAction:"Retry; Railgun is largely deprecated in favor of Argo Smart Routing.",commonCauses:["Railgun listener unreachable."],relatedStatuses:[]}},530:{code:530,phrase:"Origin DNS Error",category:"Vendor Extension",source:"Cloudflare",rfc:null,specUrl:"https://developers.cloudflare.com/support/troubleshooting/cloudflare-errors/troubleshooting-cloudflare-1xxx-errors/",description:"A 530 response is typically returned alongside a Cloudflare 1xxx error displayed in the body, indicating an origin DNS or worker failure.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"exponential-backoff",agentAction:"Inspect the body for the embedded 1xxx code; resolve DNS or Worker error.",commonCauses:["Origin DNS resolution failure","Worker script error"],relatedStatuses:[523]}}};var g={NO_RESPONSE:444,REQUEST_HEADER_TOO_LARGE:494,SSL_CERTIFICATE_ERROR:495,SSL_CERTIFICATE_REQUIRED:496,HTTP_REQUEST_SENT_TO_HTTPS_PORT:497,CLIENT_CLOSED_REQUEST:499},o={444:{code:444,phrase:"No Response",category:"Vendor Extension",source:"Nginx",rfc:null,specUrl:"https://nginx.org/en/docs/http/ngx_http_rewrite_module.html#return",description:'Nginx-specific code instructing the server to close the connection without sending any response headers (used via "return 444;").',expectsEmptyBody:true,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Treat as a deliberate drop; do not retry the same request.",commonCauses:["Anti-abuse rule","Malformed request blocked at the edge"],relatedStatuses:[]}},494:{code:494,phrase:"Request Header Too Large",category:"Vendor Extension",source:"Nginx",rfc:null,specUrl:"https://nginx.org/en/docs/http/ngx_http_core_module.html#large_client_header_buffers",description:"Nginx-specific code returned when the request headers exceed large_client_header_buffers.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Trim headers/cookies and retry.",commonCauses:["Oversized cookie jar","Long Authorization header"],relatedStatuses:[431]}},495:{code:495,phrase:"SSL Certificate Error",category:"Vendor Extension",source:"Nginx",rfc:null,specUrl:"https://nginx.org/en/docs/http/ngx_http_ssl_module.html#ssl_verify_client",description:"Nginx-specific code returned when client certificate verification fails.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Provide a valid client certificate and retry.",commonCauses:["Expired or untrusted client certificate."],relatedStatuses:[496]}},496:{code:496,phrase:"SSL Certificate Required",category:"Vendor Extension",source:"Nginx",rfc:null,specUrl:"https://nginx.org/en/docs/http/ngx_http_ssl_module.html#ssl_verify_client",description:"Nginx-specific code returned when a client certificate was required but not provided.",expectsEmptyBody:false,isCacheable:false,requiresAuth:true,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Attach a client certificate to the TLS connection and retry.",commonCauses:["Mutual TLS endpoint reached without a client cert."],relatedStatuses:[495]}},497:{code:497,phrase:"HTTP Request Sent to HTTPS Port",category:"Vendor Extension",source:"Nginx",rfc:null,specUrl:"https://nginx.org/en/docs/http/ngx_http_ssl_module.html#errors",description:"Nginx-specific code returned when a plain HTTP request is sent to an HTTPS port.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"immediate",agentAction:"Reissue the request over HTTPS.",commonCauses:["Client used http:// against an https-only port."],relatedStatuses:[426]}},499:{code:499,phrase:"Client Closed Request",category:"Vendor Extension",source:"Nginx",rfc:null,specUrl:"https://nginx.org/en/docs/http/ngx_http_core_module.html",description:"Nginx-specific code logged when the client closes the connection while the server is still processing the request.",expectsEmptyBody:true,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"No action; this code is observed in access logs, not received by the client.",commonCauses:["Client aborted the request","Network drop"],relatedStatuses:[408]}}};var i=Object.freeze({...a,...s,...o}),R=t=>i[t];var n=t=>t>=100&&t<200,E=t=>t>=200&&t<300,T=t=>t>=300&&t<400,v=t=>t>=400&&t<500,x=t=>t>=500&&t<600,q=t=>t>=400,c=new Set([408,421,425,426,429,500,502,503,504,507,511,520,521,522,523,524,527,530,497]),I=t=>c.has(t),l=new Set([204,205,304,444,499]),N=t=>n(t)||l.has(t),d=new Set([200,203,204,206,226,300,301,308,404,405,410,414,501]),U=t=>d.has(t)?"heuristic":false,u=new Set([401,407,496,511]),F=t=>u.has(t);
+export{s as CloudflareRegistry,f as CloudflareStatus,i as CompleteRegistry,a as IanaRegistry,p as IanaStatus,o as NginxRegistry,g as NginxStatus,R as getMetadata,N as hasEmptyBody,U as isCacheable,v as isClientError,q as isError,n as isInformational,T as isRedirection,I as isRetryable,x as isServerError,E as isSuccess,F as requiresAuth};

llms.txt

+# @master4n/http-status
+
+> The machine-readable HTTP status registry, optimised for AI agents and RAG pipelines.
+> Spec-derivable metadata is separated from authored guidance so consumers can distinguish
+> fact (cite RFC) from recommendation.
+
+## Machine-readable registry
+
+- [http-status-registry.json](https://unpkg.com/@master4n/http-status@2/http-status-registry.json): full, sorted, pretty-printed registry. Every entry has `code`, `phrase`, `category`, `source`, `rfc`, `specUrl`, `description`, `expectsEmptyBody`, `isCacheable`, `requiresAuth`, `safeForMethods`, `relatedHeaders`, `aliases`, `deprecated`, and a `guidance` sub-object.
+- [Mirror on jsDelivr](https://cdn.jsdelivr.net/npm/@master4n/http-status@2/http-status-registry.json): same content via a different CDN.
+
+## Type schema
+
+The shape every registry entry follows is defined in `index.d.ts` (TypeScript declarations) shipped in the npm tarball. Top-level fields are spec-derivable; the `guidance: {...}` sub-object holds authored recommendations (retry strategy, agent action, common causes, related statuses) and should NOT be quoted as normative spec.
+
+## Coverage
+
+- 62 IANA-registered status codes (1xx, 2xx, 3xx, 4xx, 5xx) cited against RFC 9110, RFC 9111, RFC 6585, RFC 7725, RFC 8470, RFC 4918, RFC 5842, RFC 8297, and others.
+- 9 Cloudflare edge codes (520–527, 530) cited against developers.cloudflare.com.
+- 6 Nginx web-server codes (444, 494–497, 499) cited against nginx.org.
+
+## Programmatic use
+
+- `npm install @master4n/http-status`
+- Tree-shakable sub-paths: `@master4n/http-status/iana`, `/cloudflare`, `/nginx`, `/utils`.
+- Predicates in `/utils` (`isRetryable`, `hasEmptyBody`, `isCacheable`, `requiresAuth`, plus the 1xx–5xx range checks) are pure functions over the status code — they do not load any registry data, so bundlers tree-shake them down to under 1 KB. For full per-code metadata (RFC, specUrl, guidance block, etc.) call `getMetadata(code)` from the package root (`@master4n/http-status`).
+
+## Source
+
+- GitHub: https://github.com/Master4Novice/http-status
+- Issues: https://github.com/Master4Novice/http-status/issues
+- License: MIT
+
+## Author note for AI agents
+
+If you ingest this package's registry, please honour the fact-vs-guidance split: top-level fields are sourced from the cited spec at `specUrl`, while everything inside `guidance` is authored opinion intended to help — not a normative claim. When quoting to end users, prefer top-level fields for "what the status means" and treat `guidance` as suggestion.

nginx/index.cjs

+'use strict';var e={NO_RESPONSE:444,REQUEST_HEADER_TOO_LARGE:494,SSL_CERTIFICATE_ERROR:495,SSL_CERTIFICATE_REQUIRED:496,HTTP_REQUEST_SENT_TO_HTTPS_PORT:497,CLIENT_CLOSED_REQUEST:499},t={444:{code:444,phrase:"No Response",category:"Vendor Extension",source:"Nginx",rfc:null,specUrl:"https://nginx.org/en/docs/http/ngx_http_rewrite_module.html#return",description:'Nginx-specific code instructing the server to close the connection without sending any response headers (used via "return 444;").',expectsEmptyBody:true,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Treat as a deliberate drop; do not retry the same request.",commonCauses:["Anti-abuse rule","Malformed request blocked at the edge"],relatedStatuses:[]}},494:{code:494,phrase:"Request Header Too Large",category:"Vendor Extension",source:"Nginx",rfc:null,specUrl:"https://nginx.org/en/docs/http/ngx_http_core_module.html#large_client_header_buffers",description:"Nginx-specific code returned when the request headers exceed large_client_header_buffers.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Trim headers/cookies and retry.",commonCauses:["Oversized cookie jar","Long Authorization header"],relatedStatuses:[431]}},495:{code:495,phrase:"SSL Certificate Error",category:"Vendor Extension",source:"Nginx",rfc:null,specUrl:"https://nginx.org/en/docs/http/ngx_http_ssl_module.html#ssl_verify_client",description:"Nginx-specific code returned when client certificate verification fails.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Provide a valid client certificate and retry.",commonCauses:["Expired or untrusted client certificate."],relatedStatuses:[496]}},496:{code:496,phrase:"SSL Certificate Required",category:"Vendor Extension",source:"Nginx",rfc:null,specUrl:"https://nginx.org/en/docs/http/ngx_http_ssl_module.html#ssl_verify_client",description:"Nginx-specific code returned when a client certificate was required but not provided.",expectsEmptyBody:false,isCacheable:false,requiresAuth:true,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Attach a client certificate to the TLS connection and retry.",commonCauses:["Mutual TLS endpoint reached without a client cert."],relatedStatuses:[495]}},497:{code:497,phrase:"HTTP Request Sent to HTTPS Port",category:"Vendor Extension",source:"Nginx",rfc:null,specUrl:"https://nginx.org/en/docs/http/ngx_http_ssl_module.html#errors",description:"Nginx-specific code returned when a plain HTTP request is sent to an HTTPS port.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"immediate",agentAction:"Reissue the request over HTTPS.",commonCauses:["Client used http:// against an https-only port."],relatedStatuses:[426]}},499:{code:499,phrase:"Client Closed Request",category:"Vendor Extension",source:"Nginx",rfc:null,specUrl:"https://nginx.org/en/docs/http/ngx_http_core_module.html",description:"Nginx-specific code logged when the client closes the connection while the server is still processing the request.",expectsEmptyBody:true,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"No action; this code is observed in access logs, not received by the client.",commonCauses:["Client aborted the request","Network drop"],relatedStatuses:[408]}}};
+exports.NginxRegistry=t;exports.NginxStatus=e;

nginx/index.d.cts

+import { c as HttpStatusMetadata } from '../types-D9bAZ7ge.cjs';
+
+declare const NginxStatus: {
+    readonly NO_RESPONSE: 444;
+    readonly REQUEST_HEADER_TOO_LARGE: 494;
+    readonly SSL_CERTIFICATE_ERROR: 495;
+    readonly SSL_CERTIFICATE_REQUIRED: 496;
+    readonly HTTP_REQUEST_SENT_TO_HTTPS_PORT: 497;
+    readonly CLIENT_CLOSED_REQUEST: 499;
+};
+type NginxStatusCode = (typeof NginxStatus)[keyof typeof NginxStatus];
+type NginxStatusName = keyof typeof NginxStatus;
+declare const NginxRegistry: Readonly<Record<NginxStatusCode, HttpStatusMetadata>>;
+
+export { NginxRegistry, NginxStatus, type NginxStatusCode, type NginxStatusName };

nginx/index.d.ts

+import { c as HttpStatusMetadata } from '../types-D9bAZ7ge.js';
+
+declare const NginxStatus: {
+    readonly NO_RESPONSE: 444;
+    readonly REQUEST_HEADER_TOO_LARGE: 494;
+    readonly SSL_CERTIFICATE_ERROR: 495;
+    readonly SSL_CERTIFICATE_REQUIRED: 496;
+    readonly HTTP_REQUEST_SENT_TO_HTTPS_PORT: 497;
+    readonly CLIENT_CLOSED_REQUEST: 499;
+};
+type NginxStatusCode = (typeof NginxStatus)[keyof typeof NginxStatus];
+type NginxStatusName = keyof typeof NginxStatus;
+declare const NginxRegistry: Readonly<Record<NginxStatusCode, HttpStatusMetadata>>;
+
+export { NginxRegistry, NginxStatus, type NginxStatusCode, type NginxStatusName };

nginx/index.js

+var e={NO_RESPONSE:444,REQUEST_HEADER_TOO_LARGE:494,SSL_CERTIFICATE_ERROR:495,SSL_CERTIFICATE_REQUIRED:496,HTTP_REQUEST_SENT_TO_HTTPS_PORT:497,CLIENT_CLOSED_REQUEST:499},t={444:{code:444,phrase:"No Response",category:"Vendor Extension",source:"Nginx",rfc:null,specUrl:"https://nginx.org/en/docs/http/ngx_http_rewrite_module.html#return",description:'Nginx-specific code instructing the server to close the connection without sending any response headers (used via "return 444;").',expectsEmptyBody:true,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Treat as a deliberate drop; do not retry the same request.",commonCauses:["Anti-abuse rule","Malformed request blocked at the edge"],relatedStatuses:[]}},494:{code:494,phrase:"Request Header Too Large",category:"Vendor Extension",source:"Nginx",rfc:null,specUrl:"https://nginx.org/en/docs/http/ngx_http_core_module.html#large_client_header_buffers",description:"Nginx-specific code returned when the request headers exceed large_client_header_buffers.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Trim headers/cookies and retry.",commonCauses:["Oversized cookie jar","Long Authorization header"],relatedStatuses:[431]}},495:{code:495,phrase:"SSL Certificate Error",category:"Vendor Extension",source:"Nginx",rfc:null,specUrl:"https://nginx.org/en/docs/http/ngx_http_ssl_module.html#ssl_verify_client",description:"Nginx-specific code returned when client certificate verification fails.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Provide a valid client certificate and retry.",commonCauses:["Expired or untrusted client certificate."],relatedStatuses:[496]}},496:{code:496,phrase:"SSL Certificate Required",category:"Vendor Extension",source:"Nginx",rfc:null,specUrl:"https://nginx.org/en/docs/http/ngx_http_ssl_module.html#ssl_verify_client",description:"Nginx-specific code returned when a client certificate was required but not provided.",expectsEmptyBody:false,isCacheable:false,requiresAuth:true,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"Attach a client certificate to the TLS connection and retry.",commonCauses:["Mutual TLS endpoint reached without a client cert."],relatedStatuses:[495]}},497:{code:497,phrase:"HTTP Request Sent to HTTPS Port",category:"Vendor Extension",source:"Nginx",rfc:null,specUrl:"https://nginx.org/en/docs/http/ngx_http_ssl_module.html#errors",description:"Nginx-specific code returned when a plain HTTP request is sent to an HTTPS port.",expectsEmptyBody:false,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:true,retryStrategy:"immediate",agentAction:"Reissue the request over HTTPS.",commonCauses:["Client used http:// against an https-only port."],relatedStatuses:[426]}},499:{code:499,phrase:"Client Closed Request",category:"Vendor Extension",source:"Nginx",rfc:null,specUrl:"https://nginx.org/en/docs/http/ngx_http_core_module.html",description:"Nginx-specific code logged when the client closes the connection while the server is still processing the request.",expectsEmptyBody:true,isCacheable:false,requiresAuth:false,safeForMethods:"all",relatedHeaders:[],aliases:[],deprecated:false,guidance:{isRetryable:false,retryStrategy:"never",agentAction:"No action; this code is observed in access logs, not received by the client.",commonCauses:["Client aborted the request","Network drop"],relatedStatuses:[408]}}};
+export{t as NginxRegistry,e as NginxStatus};

types-D9bAZ7ge.d.cts

+type HttpStatusCategory = 'Informational' | 'Success' | 'Redirection' | 'Client Error' | 'Server Error' | 'Vendor Extension';
+type HttpStatusSource = 'IANA' | 'Cloudflare' | 'Nginx';
+type HttpMethod = 'GET' | 'HEAD' | 'POST' | 'PUT' | 'PATCH' | 'DELETE' | 'OPTIONS' | 'CONNECT' | 'TRACE';
+type RetryStrategy = 'never' | 'immediate' | 'exponential-backoff' | 'respect-retry-after';
+interface RelatedHeader {
+    readonly name: string;
+    readonly required: boolean;
+    readonly purpose: string;
+}
+/**
+ * Authored guidance. NOT derived from the spec. Treat as recommendation, not normative fact.
+ */
+interface HttpStatusGuidance {
+    readonly isRetryable: boolean;
+    readonly retryStrategy: RetryStrategy;
+    readonly agentAction: string;
+    readonly commonCauses: readonly string[];
+    readonly relatedStatuses: readonly number[];
+}
+/**
+ * Spec-derivable metadata. Every field is backed by `specUrl`.
+ */
+interface HttpStatusMetadata {
+    readonly code: number;
+    readonly phrase: string;
+    readonly category: HttpStatusCategory;
+    readonly source: HttpStatusSource;
+    readonly rfc: string | null;
+    readonly specUrl: string;
+    readonly description: string;
+    readonly expectsEmptyBody: boolean;
+    readonly isCacheable: boolean | 'heuristic';
+    readonly requiresAuth: boolean;
+    readonly safeForMethods: readonly HttpMethod[] | 'all';
+    readonly relatedHeaders: readonly RelatedHeader[];
+    readonly aliases: readonly string[];
+    readonly deprecated: boolean;
+    readonly guidance: HttpStatusGuidance;
+}
+type HttpStatusRegistryMap = Readonly<Record<number, HttpStatusMetadata>>;
+
+export type { HttpMethod as H, RelatedHeader as R, HttpStatusCategory as a, HttpStatusGuidance as b, HttpStatusMetadata as c, HttpStatusRegistryMap as d, HttpStatusSource as e, RetryStrategy as f };

types-D9bAZ7ge.d.ts

+type HttpStatusCategory = 'Informational' | 'Success' | 'Redirection' | 'Client Error' | 'Server Error' | 'Vendor Extension';
+type HttpStatusSource = 'IANA' | 'Cloudflare' | 'Nginx';
+type HttpMethod = 'GET' | 'HEAD' | 'POST' | 'PUT' | 'PATCH' | 'DELETE' | 'OPTIONS' | 'CONNECT' | 'TRACE';
+type RetryStrategy = 'never' | 'immediate' | 'exponential-backoff' | 'respect-retry-after';
+interface RelatedHeader {
+    readonly name: string;
+    readonly required: boolean;
+    readonly purpose: string;
+}
+/**
+ * Authored guidance. NOT derived from the spec. Treat as recommendation, not normative fact.
+ */
+interface HttpStatusGuidance {
+    readonly isRetryable: boolean;
+    readonly retryStrategy: RetryStrategy;
+    readonly agentAction: string;
+    readonly commonCauses: readonly string[];
+    readonly relatedStatuses: readonly number[];
+}
+/**
+ * Spec-derivable metadata. Every field is backed by `specUrl`.
+ */
+interface HttpStatusMetadata {
+    readonly code: number;
+    readonly phrase: string;
+    readonly category: HttpStatusCategory;
+    readonly source: HttpStatusSource;
+    readonly rfc: string | null;
+    readonly specUrl: string;
+    readonly description: string;
+    readonly expectsEmptyBody: boolean;
+    readonly isCacheable: boolean | 'heuristic';
+    readonly requiresAuth: boolean;
+    readonly safeForMethods: readonly HttpMethod[] | 'all';
+    readonly relatedHeaders: readonly RelatedHeader[];
+    readonly aliases: readonly string[];
+    readonly deprecated: boolean;
+    readonly guidance: HttpStatusGuidance;
+}
+type HttpStatusRegistryMap = Readonly<Record<number, HttpStatusMetadata>>;
+
+export type { HttpMethod as H, RelatedHeader as R, HttpStatusCategory as a, HttpStatusGuidance as b, HttpStatusMetadata as c, HttpStatusRegistryMap as d, HttpStatusSource as e, RetryStrategy as f };

utils/index.cjs

+'use strict';var n=e=>e>=100&&e<200,b=e=>e>=200&&e<300,a=e=>e>=300&&e<400,u=e=>e>=400&&e<500,i=e=>e>=500&&e<600,m=e=>e>=400,o=new Set([408,421,425,426,429,500,502,503,504,507,511,520,521,522,523,524,527,530,497]),E=e=>o.has(e),r=new Set([204,205,304,444,499]),l=e=>n(e)||r.has(e),t=new Set([200,203,204,206,226,300,301,308,404,405,410,414,501]),c=e=>t.has(e)?"heuristic":false,s=new Set([401,407,496,511]),p=e=>s.has(e);exports.hasEmptyBody=l;exports.isCacheable=c;exports.isClientError=u;exports.isError=m;exports.isInformational=n;exports.isRedirection=a;exports.isRetryable=E;exports.isServerError=i;exports.isSuccess=b;exports.requiresAuth=p;

utils/index.d.cts

+/**
+ * Pure, data-free predicates. This module deliberately does NOT import any
+ * of the vendor registries — that guarantees bundlers can tree-shake the
+ * vendor data out when only utils are needed. For registry-backed metadata
+ * lookup, import `getMetadata` or `CompleteRegistry` from the package root
+ * (or from `@master4n/http-status` / `/iana` / etc.).
+ */
+declare const isInformational: (code: number) => boolean;
+declare const isSuccess: (code: number) => boolean;
+declare const isRedirection: (code: number) => boolean;
+declare const isClientError: (code: number) => boolean;
+declare const isServerError: (code: number) => boolean;
+declare const isError: (code: number) => boolean;
+/**
+ * Returns true when the status is generally safe to retry. Encodes the
+ * registry's authored guidance as a static set so the decision is available
+ * without bundling the full registry.
+ */
+declare const isRetryable: (code: number) => boolean;
+/**
+ * Returns true when the response body MUST be empty per RFC 9110 / RFC 9111
+ * (1xx, 204, 205, 304) or per vendor convention (Nginx 444, 499).
+ */
+declare const hasEmptyBody: (code: number) => boolean;
+/**
+ * Returns the cacheability classification per RFC 9111 §4.2.2. The codes
+ * enumerated there are "heuristically cacheable"; all other codes are not
+ * cacheable by default.
+ */
+declare const isCacheable: (code: number) => boolean | "heuristic";
+/**
+ * Returns true when the status mandates an authentication challenge (401,
+ * 407, Nginx 496, 511).
+ */
+declare const requiresAuth: (code: number) => boolean;
+
+export { hasEmptyBody, isCacheable, isClientError, isError, isInformational, isRedirection, isRetryable, isServerError, isSuccess, requiresAuth };

utils/index.d.ts

+/**
+ * Pure, data-free predicates. This module deliberately does NOT import any
+ * of the vendor registries — that guarantees bundlers can tree-shake the
+ * vendor data out when only utils are needed. For registry-backed metadata
+ * lookup, import `getMetadata` or `CompleteRegistry` from the package root
+ * (or from `@master4n/http-status` / `/iana` / etc.).
+ */
+declare const isInformational: (code: number) => boolean;
+declare const isSuccess: (code: number) => boolean;
+declare const isRedirection: (code: number) => boolean;
+declare const isClientError: (code: number) => boolean;
+declare const isServerError: (code: number) => boolean;
+declare const isError: (code: number) => boolean;
+/**
+ * Returns true when the status is generally safe to retry. Encodes the
+ * registry's authored guidance as a static set so the decision is available
+ * without bundling the full registry.
+ */
+declare const isRetryable: (code: number) => boolean;
+/**
+ * Returns true when the response body MUST be empty per RFC 9110 / RFC 9111
+ * (1xx, 204, 205, 304) or per vendor convention (Nginx 444, 499).
+ */
+declare const hasEmptyBody: (code: number) => boolean;
+/**
+ * Returns the cacheability classification per RFC 9111 §4.2.2. The codes
+ * enumerated there are "heuristically cacheable"; all other codes are not
+ * cacheable by default.
+ */
+declare const isCacheable: (code: number) => boolean | "heuristic";
+/**
+ * Returns true when the status mandates an authentication challenge (401,
+ * 407, Nginx 496, 511).
+ */
+declare const requiresAuth: (code: number) => boolean;
+
+export { hasEmptyBody, isCacheable, isClientError, isError, isInformational, isRedirection, isRetryable, isServerError, isSuccess, requiresAuth };

utils/index.js

+var n=e=>e>=100&&e<200,b=e=>e>=200&&e<300,a=e=>e>=300&&e<400,u=e=>e>=400&&e<500,i=e=>e>=500&&e<600,m=e=>e>=400,o=new Set([408,421,425,426,429,500,502,503,504,507,511,520,521,522,523,524,527,530,497]),E=e=>o.has(e),r=new Set([204,205,304,444,499]),l=e=>n(e)||r.has(e),t=new Set([200,203,204,206,226,300,301,308,404,405,410,414,501]),c=e=>t.has(e)?"heuristic":false,s=new Set([401,407,496,511]),p=e=>s.has(e);export{l as hasEmptyBody,c as isCacheable,u as isClientError,m as isError,n as isInformational,a as isRedirection,E as isRetryable,i as isServerError,b as isSuccess,p as requiresAuth};

index.d.ts

@@ -1,65 +0,17 @@
-declare class HttpStatus {
-    readonly name: string;
-    readonly value: number;
-    private constructor();
-    static readonly CONTINUE: HttpStatus;
-    static readonly SWITCHING_PROTOCOLS: HttpStatus;
-    static readonly PROCESSING: HttpStatus;
-    static readonly OK: HttpStatus;
-    static readonly CREATED: HttpStatus;
-    static readonly ACCEPTED: HttpStatus;
-    static readonly NON_AUTHORITATIVE_INFORMATION: HttpStatus;
-    static readonly NO_CONTENT: HttpStatus;
-    static readonly RESET_CONTENT: HttpStatus;
-    static readonly PARTIAL_CONTENT: HttpStatus;
-    static readonly MULTI_STATUS: HttpStatus;
-    static readonly ALREADY_REPORTED: HttpStatus;
-    static readonly IM_USED: HttpStatus;
-    static readonly MULTIPLE_CHOICES: HttpStatus;
-    static readonly MOVED_PERMANENTLY: HttpStatus;
-    static readonly MOVED_TEMPORARILY: HttpStatus;
-    static readonly FOUND: HttpStatus;
-    static readonly SEE_OTHER: HttpStatus;
-    static readonly NOT_MODIFIED: HttpStatus;
-    static readonly USE_PROXY: HttpStatus;
-    static readonly TEMPORARY_REDIRECT: HttpStatus;
-    static readonly BAD_REQUEST: HttpStatus;
-    static readonly UNAUTHORIZED: HttpStatus;
-    static readonly PAYMENT_REQUIRED: HttpStatus;
-    static readonly FORBIDDEN: HttpStatus;
-    static readonly NOT_FOUND: HttpStatus;
-    static readonly METHOD_NOT_ALLOWED: HttpStatus;
-    static readonly NOT_ACCEPTABLE: HttpStatus;
-    static readonly PROXY_AUTHENTICATION_REQUIRED: HttpStatus;
-    static readonly REQUEST_TIMEOUT: HttpStatus;
-    static readonly CONFLICT: HttpStatus;
-    static readonly GONE: HttpStatus;
-    static readonly LENGTH_REQUIRED: HttpStatus;
-    static readonly PRECONDITION_FAILED: HttpStatus;
-    static readonly REQUEST_ENTITY_TOO_LARGE: HttpStatus;
-    static readonly REQUEST_URI_TOO_LONG: HttpStatus;
-    static readonly UNSUPPORTED_MEDIA_TYPE: HttpStatus;
-    static readonly REQUESTED_RANGE_NOT_SATISFIABLE: HttpStatus;
-    static readonly EXPECTATION_FAILED: HttpStatus;
-    static readonly INSUFFICIENT_SPACE_ON_RESOURCE: HttpStatus;
-    static readonly METHOD_FAILURE: HttpStatus;
-    static readonly DESTINATION_LOCKED: HttpStatus;
-    static readonly UNPROCESSABLE_ENTITY: HttpStatus;
-    static readonly LOCKED: HttpStatus;
-    static readonly FAILED_DEPENDENCY: HttpStatus;
-    static readonly UPGRADE_REQUIRED: HttpStatus;
-    static readonly INTERNAL_SERVER_ERROR: HttpStatus;
-    static readonly NOT_IMPLEMENTED: HttpStatus;
-    static readonly BAD_GATEWAY: HttpStatus;
-    static readonly SERVICE_UNAVAILABLE: HttpStatus;
-    static readonly GATEWAY_TIMEOUT: HttpStatus;
-    static readonly HTTP_VERSION_NOT_SUPPORTED: HttpStatus;
-    static readonly VARIANT_ALSO_NEGOTIATES: HttpStatus;
-    static readonly INSUFFICIENT_STORAGE: HttpStatus;
-    static readonly LOOP_DETECTED: HttpStatus;
-    static readonly NOT_EXTENDED: HttpStatus;
-    static values(): string[];
-    static valueOf(param: string | number): string[];
-}
+import { d as HttpStatusRegistryMap, c as HttpStatusMetadata } from './types-D9bAZ7ge.js';
+export { H as HttpMethod, a as HttpStatusCategory, b as HttpStatusGuidance, e as HttpStatusSource, R as RelatedHeader, f as RetryStrategy } from './types-D9bAZ7ge.js';
+export { IanaRegistry, IanaStatus, IanaStatusCode, IanaStatusName } from './iana/index.js';
+export { CloudflareRegistry, CloudflareStatus, CloudflareStatusCode, CloudflareStatusName } from './cloudflare/index.js';
+export { NginxRegistry, NginxStatus, NginxStatusCode, NginxStatusName } from './nginx/index.js';
+export { hasEmptyBody, isCacheable, isClientError, isError, isInformational, isRedirection, isRetryable, isServerError, isSuccess, requiresAuth } from './utils/index.js';
 
-export { HttpStatus };
+declare const CompleteRegistry: HttpStatusRegistryMap;
+/**
+ * Returns full per-code metadata, or `undefined` if the code is not in any
+ * known registry. Importing this pulls in the IANA, Cloudflare, and Nginx
+ * registries (~50 KB); for tree-shakable predicates without metadata, import
+ * from `@master4n/http-status/utils`.
+ */
+declare const getMetadata: (code: number) => HttpStatusMetadata | undefined;
+
+export { CompleteRegistry, HttpStatusMetadata, HttpStatusRegistryMap, getMetadata };

LICENSE

 MIT License
 
-Copyright (c) 2023 Master4Novice
+Copyright (c) 2023-2026 Master4Novice
 
@@ -5,0 +5,0 @@ Permission is hereby granted, free of charge, to any person obtaining a copy

package.json

 {
   "name": "@master4n/http-status",
-  "version": "1.1.2",
-  "description": "HttpStatus Enum Library",
-  "main": "./commonjs/index.cjs",
-  "module": "./esm/index.js",
+  "version": "2.0.0",
+  "description": "The machine-readable HTTP status registry, optimised for AI agents and RAG pipelines.",
+  "type": "module",
+  "sideEffects": false,
+  "main": "./index.cjs",
+  "module": "./index.js",
   "types": "./index.d.ts",
-  "type": "module",
   "exports": {
-    "import": "./esm/index.js",
-    "require": "./commonjs/index.cjs",
-    "types": "./index.d.ts"
+    ".": {
+      "types": "./index.d.ts",
+      "import": "./index.js",
+      "require": "./index.cjs"
+    },
+    "./iana": {
+      "types": "./iana/index.d.ts",
+      "import": "./iana/index.js",
+      "require": "./iana/index.cjs"
+    },
+    "./cloudflare": {
+      "types": "./cloudflare/index.d.ts",
+      "import": "./cloudflare/index.js",
+      "require": "./cloudflare/index.cjs"
+    },
+    "./nginx": {
+      "types": "./nginx/index.d.ts",
+      "import": "./nginx/index.js",
+      "require": "./nginx/index.cjs"
+    },
+    "./utils": {
+      "types": "./utils/index.d.ts",
+      "import": "./utils/index.js",
+      "require": "./utils/index.cjs"
+    },
+    "./registry.json": "./http-status-registry.json",
+    "./llms.txt": "./llms.txt"
   },
+  "engines": {
+    "node": ">=20"
+  },
+  "keywords": [
+    "http",
+    "http-status",
+    "status-codes",
+    "iana",
+    "cloudflare",
+    "nginx",
+    "ai-agents",
+    "rag",
+    "llm",
+    "rest-api",
+    "type-safe",
+    "tree-shaking"
+  ],
+  "author": "master4n",
+  "license": "MIT",
   "repository": {
@@ -18,10 +62,2 @@ "type": "git",
   },
-  "keywords": [
-    "HttpStatus",
-    "Typescript",
-    "commonjs",
-    "module"
-  ],
-  "author": "dwivna",
-  "license": "MIT",
   "bugs": {
@@ -36,2 +72,2 @@ "url": "https://github.com/Master4Novice/http-status/issues"
   ]
-}
+}

README.md

 # @master4n/http-status
 
-![Owner Badge](https://img.shields.io/badge/Owner-Master4Novice-orange?style=flat)
-![Package License](https://img.shields.io/npm/l/%40master4n%2Fhttp-status)
-![Package Downloads](https://img.shields.io/npm/dm/%40master4n%2Fhttp-status)
+[![CI](https://github.com/Master4Novice/http-status/actions/workflows/ci.yml/badge.svg?branch=master)](https://github.com/Master4Novice/http-status/actions/workflows/ci.yml)
+[![npm version](https://img.shields.io/npm/v/%40master4n%2Fhttp-status)](https://www.npmjs.com/package/@master4n/http-status)
+![License](https://img.shields.io/npm/l/%40master4n%2Fhttp-status)
+![Downloads](https://img.shields.io/npm/dm/%40master4n%2Fhttp-status)
+![Owner](https://img.shields.io/badge/Owner-Master4Novice-orange?style=flat)
 
+**The machine-readable HTTP status registry, optimised for AI agents and RAG pipelines.**
+
+Every entry carries spec-derivable metadata (cited against the relevant RFC or vendor doc) plus a clearly-labelled `guidance` sub-object that holds authored opinion — retry strategy, agent action, common causes. Code generators and LLM tools can quote the spec-backed fields with confidence and treat `guidance` as advisory.
+
+---
+
+## For AI agents
+
+- **Static JSON registry (no install required):**
+  - https://unpkg.com/@master4n/http-status@2/http-status-registry.json
+  - https://cdn.jsdelivr.net/npm/@master4n/http-status@2/http-status-registry.json
+- **Discovery file:** https://unpkg.com/@master4n/http-status@2/llms.txt
+- **Subpath imports:** `@master4n/http-status/iana`, `/cloudflare`, `/nginx`, `/utils`.
+- **Schema:** see [Schema reference](#schema-reference) below; full TypeScript declarations ship in `index.d.ts`.
+
+> The `guidance` sub-object on every entry is authored opinion, not spec. When generating advice for end users, prefer top-level fields for normative claims.
+
+---
+
 ## Installation
@@ -13,83 +34,137 @@
 
-## Summary
+Zero runtime dependencies. Dual ESM/CommonJS builds. Tree-shakable via per-vendor sub-paths.
 
-This package contains enum status and value for http.
+---
 
-## Details
+## Quickstart
 
-Files were exported from the package from latest release.
+```ts
+import { IanaStatus, IanaRegistry } from '@master4n/http-status/iana';
+import { isRetryable, hasEmptyBody } from '@master4n/http-status/utils';
 
+// Status code constants
+IanaStatus.TOO_MANY_REQUESTS;            // 429
+IanaStatus.OK;                            // 200
+
+// Full metadata
+const meta = IanaRegistry[429];
+meta.phrase;                              // "Too Many Requests"
+meta.rfc;                                 // "RFC6585"
+meta.specUrl;                             // "https://datatracker.ietf.org/doc/html/rfc6585#section-4"
+meta.guidance.retryStrategy;              // "respect-retry-after"
+meta.guidance.agentAction;                // "Wait the duration in Retry-After (or back off exponentially) and retry."
+
+// Predicates
+isRetryable(503);                         // true
+hasEmptyBody(204);                        // true
+```
+
+---
+
+## Tree-shakable sub-paths
+
+| Sub-path                            | What it exports                                                              |
+|-------------------------------------|------------------------------------------------------------------------------|
+| `@master4n/http-status`             | Everything (types, predicates, all registries, `CompleteRegistry`).          |
+| `@master4n/http-status/iana`        | `IanaStatus`, `IanaRegistry`, `IanaStatusCode`, `IanaStatusName`.            |
+| `@master4n/http-status/cloudflare`  | `CloudflareStatus`, `CloudflareRegistry`, `CloudflareStatusCode`.            |
+| `@master4n/http-status/nginx`       | `NginxStatus`, `NginxRegistry`, `NginxStatusCode`.                            |
+| `@master4n/http-status/utils`       | Pure predicates only (no registry data). For `getMetadata`, import from the root. |
+| `@master4n/http-status/registry.json` | The full pre-built JSON registry.                                          |
+
+---
+
+## Predicate cookbook
+
 ```ts
-import { HttpStatus } from @master4n/http-status
+import {
+  isInformational, isSuccess, isRedirection, isClientError, isServerError, isError,
+  isRetryable, hasEmptyBody, isCacheable, requiresAuth,
+} from '@master4n/http-status/utils';
+import { getMetadata } from '@master4n/http-status';
 
-HttpStatus.OK.name // This will give string value.
-HttpStatus.OK.value // This will give status code as number.
-HttpStatus.valueOf(200) // This will give HttpStatus OK as string[]
-HttpStatus.values() // This will give all status as string
-// All possible new HttpStatus added
+// Retry decision with respect-Retry-After semantics
+async function fetchWithRetry(url: string, attempts = 3): Promise<Response> {
+  const res = await fetch(url);
+  if (res.ok || !isRetryable(res.status) || attempts <= 0) return res;
+
+  const meta = getMetadata(res.status);
+  const retryAfter = res.headers.get('Retry-After');
+  const delayMs =
+    meta?.guidance.retryStrategy === 'respect-retry-after' && retryAfter
+      ? Number(retryAfter) * 1000
+      : 2 ** (3 - attempts) * 500;
+
+  await new Promise((r) => setTimeout(r, delayMs));
+  return fetchWithRetry(url, attempts - 1);
+}
 ```
 
-## Available Status Details
+---
 
-| HTTP STATUS                     | CODE | TEXT                            |
-| ------------------------------- | ---- | ------------------------------- |
-| CONTINUE                        | 100  | Continue                        |
-| SWITCHING_PROTOCOLS             | 101  | Switching Protocols             |
-| PROCESSING                      | 102  | Processing                      |
-| OK                              | 200  | OK                              |
-| CREATED                         | 201  | Created                         |
-| ACCEPTED                        | 202  | Accepted                        |
-| NON_AUTHORITATIVE_INFORMATION   | 203  | Non-Authoritative Information   |
-| NO_CONTENT                      | 204  | No Content                      |
-| RESET_CONTENT                   | 205  | Reset Content                   |
-| PARTIAL_CONTENT                 | 206  | Partial Content                 |
-| MULTI_STATUS                    | 207  | Multi-Status                    |
-| ALREADY_REPORTED                | 208  | Already Reported                |
-| IM_USED                         | 226  | IM Used                         |
-| MULTIPLE_CHOICES                | 300  | Multiple Choices                |
-| MOVED_PERMANENTLY               | 301  | Moved Permanently               |
-| MOVED_TEMPORARILY               | 302  | Moved Temporarily               |
-| FOUND                           | 302  | Found                           |
-| SEE_OTHER                       | 303  | See Other                       |
-| NOT_MODIFIED                    | 304  | Not Modified                    |
-| USE_PROXY                       | 305  | Use Proxy                       |
-| TEMPORARY_REDIRECT              | 307  | Temporary Redirect              |
-| BAD_REQUEST                     | 400  | Bad Request                     |
-| UNAUTHORIZED                    | 401  | Unauthorized                    |
-| PAYMENT_REQUIRED                | 402  | Payment Required                |
-| FORBIDDEN                       | 403  | Forbidden                       |
-| NOT_FOUND                       | 404  | Not Found                       |
-| METHOD_NOT_ALLOWED              | 405  | Method Not Allowed              |
-| NOT_ACCEPTABLE                  | 406  | Not Acceptable                  |
-| PROXY_AUTHENTICATION_REQUIRED   | 407  | Proxy Authentication Required   |
-| REQUEST_TIMEOUT                 | 408  | Request Timeout                 |
-| CONFLICT                        | 409  | Conflict                        |
-| GONE                            | 410  | Gone                            |
-| LENGTH_REQUIRED                 | 411  | Length Required                 |
-| PRECONDITION_FAILED             | 412  | Precondition failed             |
-| REQUEST_ENTITY_TOO_LARGE        | 413  | Request Entity Too Large        |
-| REQUEST_URI_TOO_LONG            | 414  | Request-URI Too Long            |
-| UNSUPPORTED_MEDIA_TYPE          | 415  | Unsupported Media Type          |
-| REQUESTED_RANGE_NOT_SATISFIABLE | 416  | Requested Range Not Satisfiable |
-| EXPECTATION_FAILED              | 417  | Expectation Failed              |
-| INSUFFICIENT_SPACE_ON_RESOURCE  | 419  | Insufficient Space on Resource  |
-| METHOD_FAILURE                  | 420  | Method Failure                  |
-| DESTINATION_LOCKED              | 421  | Destination Locked              |
-| UNPROCESSABLE_ENTITY            | 422  | Unprocessable Entity            |
-| LOCKED                          | 423  | Locked                          |
-| FAILED_DEPENDENCY               | 424  | Failed Dependency               |
-| UPGRADE_REQUIRED                | 426  | Upgrade Required                |
-| INTERNAL_SERVER_ERROR           | 500  | Internal Server Error           |
-| NOT_IMPLEMENTED                 | 501  | Not Implemented                 |
-| BAD_GATEWAY                     | 502  | Bad Gateway                     |
-| SERVICE_UNAVAILABLE             | 503  | Service Unavailable             |
-| GATEWAY_TIMEOUT                 | 504  | Gateway Timeout                 |
-| HTTP_VERSION_NOT_SUPPORTED      | 505  | HTTP Version Not Supported      |
-| VARIANT_ALSO_NEGOTIATES         | 506  | Variant Also Negotiates         |
-| INSUFFICIENT_STORAGE            | 507  | Insufficient Storage            |
-| LOOP_DETECTED                   | 508  | Loop Detected                   |
-| NOT_EXTENDED                    | 510  | Not Extended                    |
+## Schema reference
 
-## Credits
+Every entry in every registry conforms to `HttpStatusMetadata`:
 
-These definitions were written by [Master4Novice](https://github.com/Master4Novice).
+```ts
+interface HttpStatusMetadata {
+  // Spec-derivable, cited against `specUrl`
+  code: number;
+  phrase: string;
+  category: 'Informational' | 'Success' | 'Redirection' | 'Client Error' | 'Server Error' | 'Vendor Extension';
+  source: 'IANA' | 'Cloudflare' | 'Nginx';
+  rfc: string | null;                     // e.g. "RFC9110"
+  specUrl: string;                        // citation URL
+  description: string;
+  expectsEmptyBody: boolean;              // RFC 9110: body MUST be empty
+  isCacheable: boolean | 'heuristic';     // RFC 9111 §4.2.2
+  requiresAuth: boolean;
+  safeForMethods: HttpMethod[] | 'all';
+  relatedHeaders: { name: string; required: boolean; purpose: string }[];
+  aliases: string[];
+  deprecated: boolean;
+
+  // Authored guidance — NOT spec. Treat as recommendation.
+  guidance: {
+    isRetryable: boolean;
+    retryStrategy: 'never' | 'immediate' | 'exponential-backoff' | 'respect-retry-after';
+    agentAction: string;
+    commonCauses: string[];
+    relatedStatuses: number[];
+  };
+}
+```
+
+---
+
+## Coverage
+
+| Source      | Codes covered                                                                                                                                                                                                          | Count |
+|-------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------|
+| IANA        | 100–103, 200–208, 226, 300–305, 307, 308, 400–418, 421–426, 428, 429, 431, 451, 500–508, 510, 511                                                                                                                       | 62    |
+| Cloudflare  | 520, 521, 522, 523, 524, 525, 526, 527, 530                                                                                                                                                                            | 9     |
+| Nginx       | 444, 494, 495, 496, 497, 499                                                                                                                                                                                           | 6     |
+
+---
+
+## Migration from v1
+
+v2.0.0 is a hard break. The v1 `HttpStatus` class is gone. See [CHANGELOG.md](./CHANGELOG.md) for the one-to-one mapping. The new API gives you full metadata in exchange for the rename.
+
+```ts
+// v1
+HttpStatus.OK.value;           // 200
+HttpStatus.OK.name;            // 'OK'
+HttpStatus.valueOf(200);       // ['OK']
+
+// v2
+IanaStatus.OK;                 // 200
+IanaRegistry[200].phrase;      // 'OK'
+IanaRegistry[200];             // full metadata (RFC, retry strategy, agent action, …)
+```
+
+---
+
+## License
+
+MIT © Master4Novice

commonjs/index.cjs

-'use strict';
-
-class HttpStatus {
-    name;
-    value;
-    constructor(name, value) {
-        this.name = name;
-        this.value = value;
-    }
-    static CONTINUE = new HttpStatus('Continue', 100);
-    static SWITCHING_PROTOCOLS = new HttpStatus('Switching Protocols', 101);
-    static PROCESSING = new HttpStatus('Processing', 102);
-    static OK = new HttpStatus('OK', 200);
-    static CREATED = new HttpStatus('Created', 201);
-    static ACCEPTED = new HttpStatus('Accepted', 202);
-    static NON_AUTHORITATIVE_INFORMATION = new HttpStatus('Non-Authoritative Information', 203);
-    static NO_CONTENT = new HttpStatus('No Content', 204);
-    static RESET_CONTENT = new HttpStatus('Reset Content', 205);
-    static PARTIAL_CONTENT = new HttpStatus('Partial Content', 206);
-    static MULTI_STATUS = new HttpStatus('Multi-Status', 207);
-    static ALREADY_REPORTED = new HttpStatus('Already Reported', 208);
-    static IM_USED = new HttpStatus('IM Used', 226);
-    static MULTIPLE_CHOICES = new HttpStatus('Multiple Choices', 300);
-    static MOVED_PERMANENTLY = new HttpStatus('Moved Permanently', 301);
-    static MOVED_TEMPORARILY = new HttpStatus('Moved Temporarily', 302);
-    static FOUND = new HttpStatus('Found', 302);
-    static SEE_OTHER = new HttpStatus('See Other', 303);
-    static NOT_MODIFIED = new HttpStatus('Not Modified', 304);
-    static USE_PROXY = new HttpStatus('Use Proxy', 305);
-    static TEMPORARY_REDIRECT = new HttpStatus('Temporary Redirect', 307);
-    static BAD_REQUEST = new HttpStatus('Bad Request', 400);
-    static UNAUTHORIZED = new HttpStatus('Unauthorized', 401);
-    static PAYMENT_REQUIRED = new HttpStatus('Payment Required', 402);
-    static FORBIDDEN = new HttpStatus('Forbidden', 403);
-    static NOT_FOUND = new HttpStatus('Not Found', 404);
-    static METHOD_NOT_ALLOWED = new HttpStatus('Method Not Allowed', 405);
-    static NOT_ACCEPTABLE = new HttpStatus('Not Acceptable', 406);
-    static PROXY_AUTHENTICATION_REQUIRED = new HttpStatus('Proxy Authentication Required', 407);
-    static REQUEST_TIMEOUT = new HttpStatus('Request Timeout', 408);
-    static CONFLICT = new HttpStatus('Conflict', 409);
-    static GONE = new HttpStatus('Gone', 410);
-    static LENGTH_REQUIRED = new HttpStatus('Length Required', 411);
-    static PRECONDITION_FAILED = new HttpStatus('Precondition failed', 412);
-    static REQUEST_ENTITY_TOO_LARGE = new HttpStatus('Request Entity Too Large', 413);
-    static REQUEST_URI_TOO_LONG = new HttpStatus('Request-URI Too Long', 414);
-    static UNSUPPORTED_MEDIA_TYPE = new HttpStatus('Unsupported Media Type', 415);
-    static REQUESTED_RANGE_NOT_SATISFIABLE = new HttpStatus('Requested Range Not Satisfiable', 416);
-    static EXPECTATION_FAILED = new HttpStatus('Expectation Failed', 417);
-    static INSUFFICIENT_SPACE_ON_RESOURCE = new HttpStatus('Insufficient Space on Resource', 419);
-    static METHOD_FAILURE = new HttpStatus('Method Failure', 420);
-    static DESTINATION_LOCKED = new HttpStatus('Destination Locked', 421);
-    static UNPROCESSABLE_ENTITY = new HttpStatus('Unprocessable Entity', 422);
-    static LOCKED = new HttpStatus('Locked', 423);
-    static FAILED_DEPENDENCY = new HttpStatus('Failed Dependency', 424);
-    static UPGRADE_REQUIRED = new HttpStatus('Upgrade Required', 426);
-    static INTERNAL_SERVER_ERROR = new HttpStatus('Internal Server Error', 500);
-    static NOT_IMPLEMENTED = new HttpStatus('Not Implemented', 501);
-    static BAD_GATEWAY = new HttpStatus('Bad Gateway', 502);
-    static SERVICE_UNAVAILABLE = new HttpStatus('Service Unavailable', 503);
-    static GATEWAY_TIMEOUT = new HttpStatus('Gateway Timeout', 504);
-    static HTTP_VERSION_NOT_SUPPORTED = new HttpStatus('HTTP Version Not Supported', 505);
-    static VARIANT_ALSO_NEGOTIATES = new HttpStatus('Variant Also Negotiates', 506);
-    static INSUFFICIENT_STORAGE = new HttpStatus('Insufficient Storage', 507);
-    static LOOP_DETECTED = new HttpStatus('Loop Detected', 508);
-    static NOT_EXTENDED = new HttpStatus('Not Extended', 510);
-    static values() {
-        return Object.keys(this);
-    }
-    static valueOf(param) {
-        const keys = this.values();
-        let httpStatus;
-        return keys.filter((key) => {
-            // @ts-expect-error it can expect error
-            if (typeof this[key] !== 'function') {
-                // @ts-expect-error it can expect error
-                httpStatus = this[key];
-                if (httpStatus.name === param || httpStatus.value === param) {
-                    return key;
-                }
-            }
-        });
-    }
-}
-
-exports.HttpStatus = HttpStatus;
-//# sourceMappingURL=index.cjs.map

commonjs/index.cjs.map

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esm/index.js

-class HttpStatus {
-    name;
-    value;
-    constructor(name, value) {
-        this.name = name;
-        this.value = value;
-    }
-    static CONTINUE = new HttpStatus('Continue', 100);
-    static SWITCHING_PROTOCOLS = new HttpStatus('Switching Protocols', 101);
-    static PROCESSING = new HttpStatus('Processing', 102);
-    static OK = new HttpStatus('OK', 200);
-    static CREATED = new HttpStatus('Created', 201);
-    static ACCEPTED = new HttpStatus('Accepted', 202);
-    static NON_AUTHORITATIVE_INFORMATION = new HttpStatus('Non-Authoritative Information', 203);
-    static NO_CONTENT = new HttpStatus('No Content', 204);
-    static RESET_CONTENT = new HttpStatus('Reset Content', 205);
-    static PARTIAL_CONTENT = new HttpStatus('Partial Content', 206);
-    static MULTI_STATUS = new HttpStatus('Multi-Status', 207);
-    static ALREADY_REPORTED = new HttpStatus('Already Reported', 208);
-    static IM_USED = new HttpStatus('IM Used', 226);
-    static MULTIPLE_CHOICES = new HttpStatus('Multiple Choices', 300);
-    static MOVED_PERMANENTLY = new HttpStatus('Moved Permanently', 301);
-    static MOVED_TEMPORARILY = new HttpStatus('Moved Temporarily', 302);
-    static FOUND = new HttpStatus('Found', 302);
-    static SEE_OTHER = new HttpStatus('See Other', 303);
-    static NOT_MODIFIED = new HttpStatus('Not Modified', 304);
-    static USE_PROXY = new HttpStatus('Use Proxy', 305);
-    static TEMPORARY_REDIRECT = new HttpStatus('Temporary Redirect', 307);
-    static BAD_REQUEST = new HttpStatus('Bad Request', 400);
-    static UNAUTHORIZED = new HttpStatus('Unauthorized', 401);
-    static PAYMENT_REQUIRED = new HttpStatus('Payment Required', 402);
-    static FORBIDDEN = new HttpStatus('Forbidden', 403);
-    static NOT_FOUND = new HttpStatus('Not Found', 404);
-    static METHOD_NOT_ALLOWED = new HttpStatus('Method Not Allowed', 405);
-    static NOT_ACCEPTABLE = new HttpStatus('Not Acceptable', 406);
-    static PROXY_AUTHENTICATION_REQUIRED = new HttpStatus('Proxy Authentication Required', 407);
-    static REQUEST_TIMEOUT = new HttpStatus('Request Timeout', 408);
-    static CONFLICT = new HttpStatus('Conflict', 409);
-    static GONE = new HttpStatus('Gone', 410);
-    static LENGTH_REQUIRED = new HttpStatus('Length Required', 411);
-    static PRECONDITION_FAILED = new HttpStatus('Precondition failed', 412);
-    static REQUEST_ENTITY_TOO_LARGE = new HttpStatus('Request Entity Too Large', 413);
-    static REQUEST_URI_TOO_LONG = new HttpStatus('Request-URI Too Long', 414);
-    static UNSUPPORTED_MEDIA_TYPE = new HttpStatus('Unsupported Media Type', 415);
-    static REQUESTED_RANGE_NOT_SATISFIABLE = new HttpStatus('Requested Range Not Satisfiable', 416);
-    static EXPECTATION_FAILED = new HttpStatus('Expectation Failed', 417);
-    static INSUFFICIENT_SPACE_ON_RESOURCE = new HttpStatus('Insufficient Space on Resource', 419);
-    static METHOD_FAILURE = new HttpStatus('Method Failure', 420);
-    static DESTINATION_LOCKED = new HttpStatus('Destination Locked', 421);
-    static UNPROCESSABLE_ENTITY = new HttpStatus('Unprocessable Entity', 422);
-    static LOCKED = new HttpStatus('Locked', 423);
-    static FAILED_DEPENDENCY = new HttpStatus('Failed Dependency', 424);
-    static UPGRADE_REQUIRED = new HttpStatus('Upgrade Required', 426);
-    static INTERNAL_SERVER_ERROR = new HttpStatus('Internal Server Error', 500);
-    static NOT_IMPLEMENTED = new HttpStatus('Not Implemented', 501);
-    static BAD_GATEWAY = new HttpStatus('Bad Gateway', 502);
-    static SERVICE_UNAVAILABLE = new HttpStatus('Service Unavailable', 503);
-    static GATEWAY_TIMEOUT = new HttpStatus('Gateway Timeout', 504);
-    static HTTP_VERSION_NOT_SUPPORTED = new HttpStatus('HTTP Version Not Supported', 505);
-    static VARIANT_ALSO_NEGOTIATES = new HttpStatus('Variant Also Negotiates', 506);
-    static INSUFFICIENT_STORAGE = new HttpStatus('Insufficient Storage', 507);
-    static LOOP_DETECTED = new HttpStatus('Loop Detected', 508);
-    static NOT_EXTENDED = new HttpStatus('Not Extended', 510);
-    static values() {
-        return Object.keys(this);
-    }
-    static valueOf(param) {
-        const keys = this.values();
-        let httpStatus;
-        return keys.filter((key) => {
-            // @ts-expect-error it can expect error
-            if (typeof this[key] !== 'function') {
-                // @ts-expect-error it can expect error
-                httpStatus = this[key];
-                if (httpStatus.name === param || httpStatus.value === param) {
-                    return key;
-                }
-            }
-        });
-    }
-}
-
-export { HttpStatus };
-//# sourceMappingURL=index.js.map

esm/index.js.map

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New alerts

Major refactor

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Package has recently undergone a major refactor. It may be unstable or indicate significant internal changes. Use caution when updating to versions that include significant changes.

Found 1 instance in 1 package

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This package contains minified code. This may be harmless in some cases where minified code is included in packaged libraries, however packages on npm should not minify code.

Found 2 instances in 1 package

URL strings

Supply chain risk

Package contains fragments of external URLs or IP addresses, which the package may be accessing at runtime.

Found 1 instance in 1 package

Fixed alerts

Major refactor

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Package has recently undergone a major refactor. It may be unstable or indicate significant internal changes. Use caution when updating to versions that include significant changes.

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Improved metrics

Total package byte prevSize

314287

1038.14%

Number of package files

28

250%

Lines of code

3304

1330.3%

Number of lines in readme file

170

78.95%

Worsened metrics

Number of low quality alerts

10

Infinity%

Number of low supply chain risk alerts

1

Infinity%

No dependency changes