# a2a-types

A tiny TypeScript types library containing Google's official A2A (Agent2Agent) types, directly from <https://github.com/google-a2a/A2A/tree/main/types>

## Installation

```bash
npm install -D a2a-types
```

## Usage

```typescript
import type { AgentCard } from "a2a-types";
```

## Updating Types

To pull the latest types from Google's A2A repository:

```bash
npm run update-types
```

This fetches the latest types from:
https://raw.githubusercontent.com/google-a2a/A2A/refs/heads/main/types/src/types.ts

## Contributing

PRs are welcome! This library aims to stay in sync with Google's official A2A types.

## License

Apache-2.0 - from Google's A2A repository


a2a-types

venables

(Experimental) An ambiguous license classifier was found.

What is an ambiguous license classifier?

Ambiguous License Classifier

Source files are encoded using a non-standard text encoding.

What is bad text encoding?

Bad text encoding

Package version is not a valid semantic version (semver).

What is bad semver?

Bad semver

Package has dependencies with an invalid semantic version. This could be a sign of beta, low quality, or unmaintained dependencies.

What is bad dependency semver?

Bad dependency semver

Source files contain bidirectional unicode control characters. This could indicate a Trojan source supply chain attack. See: trojansource.codes for more information.

What are bidirectional unicode control characters?

Bidirectional unicode control characters

This package has multiple bin scripts with the same name. This can cause non-deterministic behavior when installing or could be a sign of a supply chain attack.

What is bin script confusion?

Bin script confusion

This Chrome extension includes a content script '{scriptFile}' that runs on websites matching '{matches}'.

What are Chrome extension content scripts?

Chrome Extension Content Script

This Chrome extension requests access to '{host}'.

What are Chrome extension host permissions?

Chrome Extension Host Permission

This Chrome extension uses the '{permission}' permission.

What are Chrome extension permissions?

Chrome Extension Permission

This Chrome extension requests broad access to websites with the pattern '{host}'.

What are Chrome extension wildcard host permissions?

Chrome Extension Wildcard Host Permission

Semantic versions published out of chronological order.

What is a chronological version anomaly?

Chronological version anomaly

Project maintainer's SSH key has been compromised.

What is a compromised SSH key?

Compromised SSH key

(Experimental) Copyleft license information was found.

What do I need to know about license files?

Copyleft License

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What is a critical CVE?

Title

Critical CVE

Contains a high severity Common Vulnerability and Exposure (CVE).

What is a CVE?

High CVE

Uses debug, reflection and dynamic code execution features.

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Debug access

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Deprecated

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Deprecated SPDX exception

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Deprecated license

Package name is similar to other popular packages and may not be the package you want.

What is a typosquat?

Possible typosquat attack

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Dynamic require

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Empty package

Package accesses environment variables, which may be a sign of credential stuffing or data theft.

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Environment variable access

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Name

Extraneous dependency

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File dependency

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Filesystem access

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Wildcard dependency

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Git dependency

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GitHub dependency

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What is an AI-detected potential code anomaly?

AI-detected potential code anomaly

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AI-detected possible typosquat

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AI-detected potential malware

AI has determined that this package may contain potential security issues or vulnerabilities.

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AI-detected potential security risk

Contains native code (e.g., compiled binaries or shared libraries). Including native code can obscure malicious behavior.

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Native code

Contains high entropy strings. This could be a sign of encrypted data, leaked secrets or obfuscated code.

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High entropy strings

Contains unicode homoglyphs which can be used in supply chain confusion attacks.

What are unicode homoglyphs?

Unicode homoglyphs

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What are http dependencies?

HTTP dependency

Install scripts are run when the package is installed. The majority of malware in npm is hidden in install scripts.

What is an install script?

Install scripts

Package has an invalid manifest file and can cause installation problems if you try to use it.

What is an invalid manifest file?

Invalid manifest file

Source files contain invisible characters. This could indicate source obfuscation or a supply chain attack.

What are invisible characters?

Invisible chars

(Experimental) Package license has recently changed.

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License change

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License exception

This package is not allowed per your license policy. Review the package's license to ensure compliance.

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License Policy Violation

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What's wrong with long strings?

Long strings

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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Major refactor

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Known malware

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Manifest confusion

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Low CVE

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.

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The package was published by an npm account that no longer exists.

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Missing license

This package is missing its tarball. It could be removed from the npm registry or there may have been an error when publishing.

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Mixed license

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Modified license exception

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What is a modified license?

Modified license

What is network access?

Network access

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New author

Package does not specify a list of contributors or an author in package.json.

Why is contributor and author data important?

No contributors or author data

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Why are bug trackers important?

No bug tracker

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No License Found

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No README

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a2a-types

a2a-types

Installation

Usage

Updating Types

Contributing

License

Keywords

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a2a-types

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License

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