anthropic-ai/sdk

Anthropic PHP SDK

v0.6.0 2026-02-19 19:42 UTC

Requires

• php: ^8.1
• php-http/discovery: ^1
• psr/http-client: ^1
• psr/http-client-implementation: ^1
• psr/http-factory-implementation: ^1
• psr/http-message: ^1|^2

Requires (Dev)

• aws/aws-sdk-php: ^3.368
• friendsofphp/php-cs-fixer: ^3
• google/auth: ^1.49
• nyholm/psr7: ^1
• pestphp/pest: ^3
• php-http/mock-client: ^1
• phpstan/extension-installer: ^1
• phpstan/phpstan: ^2
• phpstan/phpstan-phpunit: ^2
• phpunit/phpunit: ^11
• symfony/http-client: ^7

Suggests

• aws/aws-sdk-php: Allows using the AWS Bedrock SDK
• google/auth: Allows using the Google Vertex SDK

MIT

README

The Claude SDK for PHP provides access to the Claude API from PHP applications.

Documentation

Full documentation is available at platform.claude.com/docs/en/api/sdks/php.

Installation

composer require "anthropic-ai/sdk"

Getting started

<?php

use Anthropic\Client;

$client = new Client(
  apiKey: getenv('ANTHROPIC_API_KEY') ?: 'my-anthropic-api-key'
);

$message = $client->messages->create(
  maxTokens: 1024,
  messages: [['role' => 'user', 'content' => 'Hello, Claude']],
  model: 'claude-opus-4-6',
);

var_dump($message->content);

Requirements

PHP 8.1.0+

Contributing

See CONTRIBUTING.md.

License

This project is licensed under the MIT License. See the LICENSE file for details.