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Example code of iajson/client

Informations about the package client

iajson/client

PHP reference library for consuming ia.json files -- the universal standard for AI interaction with websites.

Requirements

Installation

Note: The package will be available on Packagist soon. In the meantime, install from GitHub:

Quick Start

Discovery

The library follows the ia.json discovery algorithm:

  1. Tries https://{domain}/ia.json
  2. Falls back to https://{domain}/.well-known/ia.json
  3. Validates the spec structure and version compatibility

Browsing Endpoints

Authentication

Signed Key Registration

For protected endpoints, you must register your AI agent and receive credentials:

Using Existing Credentials

If you already have credentials from a previous registration:

OAuth2 (User Authorization)

For user_required endpoints, you need the user's OAuth2 token:

Request Signing

The Signer class implements the ia.json HMAC signing algorithm:

Error Handling

The library throws typed exceptions for different error conditions:

Laravel Integration

This package includes first-class Laravel support with auto-discovery.

Setup

  1. Publish the configuration:

  2. Add your credentials to .env:

Using the Facade

Dependency Injection

Verifying Incoming AI Agent Requests

If your Laravel application serves as an ia.json-enabled site and receives requests from AI agents, use the VerifyIaSignature middleware:

  1. Register the middleware alias in your bootstrap/app.php (Laravel 11+) or kernel:

  2. Apply it to your routes:

  3. Configure the secret resolver in config/iajson.php:

The verified API key is available in the request:

Configuration Reference

The full config/iajson.php supports the following options:

Key Env Variable Description
domain IAJSON_DOMAIN Domain to discover ia.json from
api_key IAJSON_API_KEY Agent API key
secret IAJSON_SECRET Agent secret
oauth.client_id IAJSON_OAUTH_CLIENT_ID OAuth2 client ID
oauth.client_secret IAJSON_OAUTH_CLIENT_SECRET OAuth2 client secret
cache_ttl IAJSON_CACHE_TTL Spec cache TTL in seconds
verification.algorithm IAJSON_VERIFY_ALGORITHM HMAC algorithm for verification
verification.header_prefix IAJSON_VERIFY_HEADER_PREFIX Auth header prefix
verification.max_age_seconds IAJSON_VERIFY_MAX_AGE Max timestamp age

Spec Compliance

This library implements the ia.json v1.0.0 specification:

License

MIT License. See the ia.json project for the full specification.

All versions of client with dependencies

PHP Build Version
Package Version
Requires php Version ^8.1
guzzlehttp/guzzle Version ^7.5
psr/http-message Version ^2.0
Composer command for our command line client (download client) This client runs in each environment. You don't need a specific PHP version etc. The first 20 API calls are free. Standard composer command

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