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Vendor jasontame
Package langgraph-client-php
Short Description An unofficial PHP client SDK for the LangGraph Platform API.
License MIT
Homepage https://github.com/jasontame/langgraph-client-php

Keywords client sdk laravel agents ai langchain Jason Tame langgraph-client-php langgraph

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Informations about the package langgraph-client-php

LangGraph Client for PHP

An unofficial PHP client SDK for interacting with the LangGraph Platform API. This package provides a clean, Laravel-friendly interface for building AI agents and workflows using LangGraph's powerful platform.

Features

✅ Complete API Coverage - Assistants, Threads, Runs, Crons, and Store operations
✅ Laravel Integration - Service provider, facade, and configuration
✅ Streaming Support - Real-time Server-Sent Events (SSE) streaming
✅ Webhook Support - Async operations with webhook callbacks
✅ Error Handling - Comprehensive exception classes with detailed error information
✅ HTTP Client - Built on Guzzle with retry logic and timeout handling
✅ Type Safety - Full PHP 8.3+ type declarations

Installation

Install the package via Composer:

Laravel Setup

Publish the configuration file:

Add your LangGraph Platform API credentials to your .env file:

For local development, you can use:

Quick Start

Using the Facade (Laravel)

Using the Client Directly

Configuration

Environment Variables

The SDK can be configured using environment variables:

LANGGRAPH_API_KEY: Your LangGraph Platform API key (use fake-api-key for local development)
LANGGRAPH_BASE_URL: Custom base URL (defaults to https://api.langchain.com)
LANGGRAPH_TIMEOUT: Request timeout in seconds (default: 30)
LANGGRAPH_RETRIES: Number of retry attempts (default: 3)

Client Configuration

Usage Examples

Assistants

Threads

Runs

Crons

Note: Cron functionality requires LangGraph Platform Enterprise

Store Operations

Streaming

The SDK supports Server-Sent Events (SSE) streaming for real-time responses:

Webhooks

The SDK supports webhooks that are called after LangGraph API calls complete:

Webhook Requirements:

Must be a valid URI (up to 65,536 characters)
Should handle HTTP POST requests from LangGraph Platform
Called after the API call completes

Error Handling

The SDK provides specific exception classes for different API errors:

Available exception classes:

LangGraphException - Base error class
BadRequestException - 400 errors
UnauthorizedException - 401 errors
NotFoundException - 404 errors
ConflictException - 409 errors
ValidationException - 422 errors
ServerException - 500+ errors

Testing

Run the tests with:

Run with coverage:

Code Style

Fix code style issues:

Run static analysis:

Contributing

Please see CONTRIBUTING for details.

Security Vulnerabilities

Please review our security policy on how to report security vulnerabilities.

Credits

Jason Tame
Inspired by the Ruby LangGraph Platform SDK
All Contributors

License

The MIT License (MIT). Please see License File for more information.

All versions of langgraph-client-php with dependencies

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Package Version

Version 0.1.0 Release 19. Jul 2025
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Requires php Version ^8.3
spatie/laravel-package-tools Version ^1.16
illuminate/contracts Version ^11.0||^12.0
guzzlehttp/guzzle Version ^7.8
psr/http-message Version ^2.0
psr/http-client Version ^1.0

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