@fingerprintjs/fingerprintjs-pro-server-api

Fingerprint Server API Node.js SDK

Fingerprint is a device intelligence platform offering 99.5% accurate visitor identification.

The Fingerprint Server Node SDK is an easy way to interact with the Fingerprint Server API from your Node application. You can retrieve visitor history or individual identification events.

Requirements

TypeScript support:

• TypeScript 4.5.5 or higher

Supported runtimes:

• Node.js 18 LTS or higher (we support all Node LTS releases before end-of-life).

• Deno and Bun might work but are not actively tested.

• "Edge" runtimes might work with some modifications but are not actively tested.

  See "edge" runtimes compatibility

  This SDK can be made compatible with JavaScript "edge" runtimes that do not support all Node APIs, for example, Vercel Edge Runtime, or Cloudflare Workers.

  To make it work, replace the SDK's built-in fetch function (which relies on Node APIs) with the runtime's native fetch function. Pass the function into the constructor with proper binding:

  const client = new FingerprintJsServerApiClient({
    region: Region.EU,
    apiKey: apiKey,
    fetch: fetch.bind(globalThis),
  })
  

How to install

Install the package using your favorite package manager:

• NPM:

  npm i @fingerprintjs/fingerprintjs-pro-server-api
  

• Yarn:

  yarn add @fingerprintjs/fingerprintjs-pro-server-api
  

• pnpm:

  pnpm i @fingerprintjs/fingerprintjs-pro-server-api
  

Getting started

Initialize the client instance and use it to make API requests. You need to specify your Fingerprint Secret API key and the region of your Fingerprint application.

import {
  FingerprintJsServerApiClient,
  Region,
} from '@fingerprintjs/fingerprintjs-pro-server-api'

const client = new FingerprintJsServerApiClient({
  apiKey: '<SECRET_API_KEY>',
  region: Region.Global,
})

// Get visit history of a specific visitor
client.getVisitorHistory('<visitorId>').then((visitorHistory) => {
  console.log(visitorHistory)
})

// Get a specific identification event
client.getEvent('<requestId>').then((event) => {
  console.log(event)
})

See the Examples folder for more detailed examples.

Error handling

The Server API methods can throw RequestError. When handling errors, you can check for it like this:

import {
  RequestError,
  FingerprintJsServerApiClient,
  TooManyRequestsError,
} from '@fingerprintjs/fingerprintjs-pro-server-api'

const client = new FingerprintJsServerApiClient({
  apiKey: '<SECRET_API_KEY>',
  region: Region.Global,
})

// Handling getEvent errors
try {
  const event = await client.getEvent(requestId)
  console.log(JSON.stringify(event, null, 2))
} catch (error) {
  if (error instanceof RequestError) {
    console.log(error.responseBody) // Access parsed response body
    console.log(error.response) // You can also access the raw response
    console.log(`error ${error.statusCode}: `, error.message)
  } else {
    console.log('unknown error: ', error)
  }
}

// Handling getVisitorHistory errors
try {
  const visitorHistory = await client.getVisitorHistory(visitorId, {
    limit: 10,
  })
  console.log(JSON.stringify(visitorHistory, null, 2))
} catch (error) {
  if (error instanceof RequestError) {
    console.log(error.status, error.error)
    if (error instanceof TooManyRequestsError) {
      retryLater(error.retryAfter) // Needs to be implemented on your side
    }
  } else {
    console.error('unknown error: ', error)
  }

  // You can also check for specific error instance
  // if(error instanceof VisitorsError403) {
  //    Handle 403 error...
  // }
}

Webhooks

Webhook types

When handling Webhooks coming from Fingerprint, you can cast the payload as the built-in VisitWebhook type:

import { VisitWebhook } from '@fingerprintjs/fingerprintjs-pro-server-api'

const visit = visitWebhookBody as unknown as VisitWebhook

Webhook signature validation

Customers on the Enterprise plan can enable Webhook signatures to cryptographically verify the authenticity of incoming webhooks. This SDK provides a utility method for verifying the HMAC signature of the incoming webhook request.

To learn more, see example/validateWebhookSignature.mjs or read the API Reference.

Sealed results

Customers on the Enterprise plan can enable Sealed results to receive the full device intelligence result on the client and unseal it on the server. This SDK provides utility methods for decoding sealed results.

To learn more, see example/unsealResult.mjs or the API Reference.

Deleting visitor data

Customers on the Enterprise plan can Delete all data associated with a specific visitor to comply with privacy regulations. See example/deleteVisitor.mjs or the API Reference.

API Reference

See the full API reference.

Support and feedback

To report problems, ask questions, or provide feedback, please use Issues. If you need private support, you can email us at [e-mail].

License

This project is licensed under the MIT license.

Changelog

6.0.0

Major Changes

The underlying Server API hasn’t changed, but we made SDK type and class generation more precise, resulting in small breaking changes for the SDK itself. This change should make the SDK API a lot more stable going forward

• Rename EventUpdateRequest type to EventsUpdateRequest (54b92b2)
• • Remove the BrowserDetails field botProbability.
  • Update the IdentificationConfidence field score type format: float -> double.
  • Make the RawDeviceAttributeError field name optional .
  • Make the RawDeviceAttributeError field message optional .
  • events: Remove the EventsResponse field error.
    • [note]: The errors are represented by ErrorResponse model.
  • events: Update the HighActivity field dailyRequests type format: number -> int64.
  • events: Specify the Tampering field anomalyScore type format: double.
  • webhook: Make the Webhook fields optional: visitorId, visitorFound, firstSeenAt, lastSeenAt, browserDetails, incognito.
  • webhook: Make the WebhookClonedApp field result optional.
  • webhook: Make the WebhookDeveloperTools field result optional.
  • webhook: Make the WebhookEmulator field result optional.
  • webhook: Make the WebhookFactoryReset fields time and timestamp optional.
  • webhook: Make the WebhookFrida field result optional.
  • webhook: Update the WebhookHighActivity field dailyRequests type format: number -> int64.
  • webhook: Make the WebhookIPBlocklist fields result and details optional.
  • webhook: Make the WebhookJailbroken field result optional.
  • webhook: Make the WebhookLocationSpoofing field result optional.
  • webhook: Make the WebhookPrivacySettings field result optional.
  • webhook: Make the WebhookProxy field result optional.
  • webhook: Make the WebhookRemoteControl field result optional.
  • webhook: Make the WebhookRootApps field result optional.
  • webhook: Make the WebhookSuspectScore field result optional.
  • webhook: Make the WebhookTampering fields result, anomalyScore and antiDetectBrowser optional.
  • webhook: Specify the WebhookTampering field anomalyScore type format: double.
  • webhook: Make the WebhookTor field result optional.
  • webhook: Make the WebhookVelocity fields optional: distinctIp, distinctLinkedId, distinctCountry, events, ipEvents, distinctIpByLinkedId, distinctVisitorIdByLinkedId.
  • webhook: Make the WebhookVirtualMachine field result optional.
  • webhook: Make the WebhookVPN fields optional: result, confidence, originTimezone, methods. (68b89bf)
• • Rename BotdResult -> Botd.
  • Rename BotdDetectionResult -> BotdBot:
    • Extract result type as BotdBotResult.
  • Rename ClonedAppResult -> ClonedApp.
  • Rename DeveloperToolsResult -> DeveloperTools.
  • Rename EmulatorResult -> Emulator.
  • Refactor error models:
    • Remove ErrorCommon403Response, ErrorCommon429Response, ErrorEvent404Response, TooManyRequestsResponse, ErrorVisits403, ErrorUpdateEvent400Response, ErrorUpdateEvent409Response, ErrorVisitor400Response, ErrorVisitor404Response, IdentificationError, ProductError.
    • Introduce ErrorResponse and ErrorPlainResponse.
      • [note]: ErrorPlainResponse has a different format { "error": string } and it is used only in GET /visitors.
    • Extract error type as Error.
    • Extract error.code type as ErrorCode.
  • Rename EventResponse -> EventsGetResponse.
  • Rename EventUpdateRequest -> EventsUpdateRequest.
  • Rename FactoryResetResult -> FactoryReset.
  • Rename FridaResult -> Frida.
  • Rename IPLocation -> Geolocation:
    • Rename IPLocationCity -> GeolocationCity.
    • Extract subdivisions type as GeolocationSubdivisions.
    • Rename Location -> GeolocationContinent:
    • Introduce a dedicated type GeolocationCountry.
    • Rename Subdivision -> GeolocationSubdivision.
  • Rename HighActivityResult -> HighActivity.
  • Rename Confidence -> IdentificationConfidence.
  • Rename SeenAt -> IdentificationSeenAt.
  • Rename IncognitoResult -> Incognito.
  • Rename IpBlockListResult -> IPBlocklist:
    • Extract details type as IPBlocklistDetails.
  • Rename IpInfoResult -> IPInfo:
    • Rename IpInfoResultV4 -> IPInfoV4.
    • Rename IpInfoResultV6 -> IPInfoV6.
    • Rename ASN -> IPInfoASN.
    • Rename DataCenter -> IPInfoDataCenter.
  • Rename JailbrokenResult -> Jailbroken.
  • Rename LocationSpoofingResult -> LocationSpoofing.
  • Rename PrivacySettingsResult -> PrivacySettings.
  • Rename ProductsResponse -> Products:
    • Rename inner types: ProductsResponseIdentification -> ProductIdentification, ProductsResponseIdentificationData -> Identification, ProductsResponseBotd -> ProductBotd, SignalResponseRootApps -> ProductRootApps, SignalResponseEmulator -> ProductEmulator, SignalResponseIpInfo -> ProductIPInfo, SignalResponseIpBlocklist -> ProductIPBlocklist, SignalResponseTor -> ProductTor, SignalResponseVpn -> ProductVPN, SignalResponseProxy -> ProductProxy, ProxyResult -> Proxy, SignalResponseIncognito -> ProductIncognito, SignalResponseTampering -> ProductTampering, SignalResponseClonedApp -> ProductClonedApp, SignalResponseFactoryReset -> ProductFactoryReset, SignalResponseJailbroken -> ProductJailbroken, SignalResponseFrida -> ProductFrida, SignalResponsePrivacySettings -> ProductPrivacySettings, SignalResponseVirtualMachine -> ProductVirtualMachine, SignalResponseRawDeviceAttributes -> ProductRawDeviceAttributes, RawDeviceAttributesResultValue -> RawDeviceAttributes, SignalResponseHighActivity -> ProductHighActivity, SignalResponseLocationSpoofing -> ProductLocationSpoofing, SignalResponseSuspectScore -> ProductSuspectScore, SignalResponseRemoteControl -> ProductRemoteControl, SignalResponseVelocity -> ProductVelocity, SignalResponseDeveloperTools -> ProductDeveloperTools.
    • Extract identification.data type as Identification.
  • Rename RawDeviceAttributesResult -> RawDeviceAttributes:
    • Extract item type as RawDeviceAttribute.
    • Extract error type as RawDeviceAttributeError.
  • Rename RemoteControlResult -> RemoteControl.
  • Rename RootAppsResult -> RootApps.
  • Rename SuspectScoreResult -> SuspectScore.
  • Extract new model Tag.
  • Rename TamperingResult -> Tampering.
  • Rename TorResult -> Tor.
  • Rename VelocityResult -> Velocity:
    • Rename VelocityIntervals -> VelocityData.
    • Rename VelocityIntervalResult -> VelocityIntervals.
  • Rename VirtualMachineResult -> VirtualMachine.
  • Rename the Visit field ipLocation type DeprecatedIPLocation -> DeprecatedGeolocation.
    • Instead of DeprecatedIPLocationCity use common GeolocationCity
  • Rename Response -> VisitorsGetResponse.
    • Omit extra inner type ResponseVisits
  • Rename VpnResult -> VPN.
    • Extract confidence type as VPNConfidence.
    • Extract methods type as VPNMethods.
  • Rename WebhookVisit -> Webhook.
    • Introduce new inner types: WebhookRootApps, WebhookEmulator, WebhookIPInfo, WebhookIPBlocklist, WebhookTor, WebhookVPN, WebhookProxy, WebhookTampering, WebhookClonedApp, WebhookFactoryReset, WebhookJailbroken, WebhookFrida, WebhookPrivacySettings, WebhookVirtualMachine, WebhookRawDeviceAttributes, WebhookHighActivity, WebhookLocationSpoofing, WebhookSuspectScore, WebhookRemoteControl, WebhookVelocity, WebhookDeveloperTools. (68b89bf)
• Remove utility functions for checking error type, such as isEventError, isUpdateEventError, etc. (a17b73f)
• Reduce thrown errors to TooManyRequestsError and RequestError (6f4076e)
• Rename VisitWebhook type to Webhook (980bab0)

Minor Changes

• Added new ipEvents, distinctIpByLinkedId, and distinctVisitorIdByLinkedId fields to the velocity Smart Signal. (68b89bf)
• • Make the GeolocationCity field name required.
  • Make the GeolocationSubdivision field isoCode required.
  • Make the GeolocationSubdivision field name required.
  • Make the IPInfoASN field name required .
  • Make the IPInfoDataCenter field name required.
  • Add optional IdentificationConfidence field comment.
  • events: Add optional Botd field meta.
  • events: Add optional Identification field components.
  • events: Make the VPN field originCountry required.
  • visitors: Add optional Visit field components.
  • webhook: Add optional Webhook field components. (68b89bf)
• Remove ipv4 format from ip field in Botd, Identification, Visit and Webhook models. (b707bfa)

Patch Changes

• related-visitors: Add mention that the API is billable (68b89bf)