A simple PHP library to connect to Anthropic APIs (Claude).

I created this package to fulfill my own needs on my AI projects. I am aware that there are other similar packages, but either they didn't have all the required features or I just didn't like the implementation and usage.

Features

• Messages API
• Support multi-content messages (Vision)
• Tool usage (beta)
• Completion API (legacy)
• Prompt caching (system message only, for now)
• Helps you build and validate messages/tools data structures before sending to the API

Roadmap

• Streaming

Installation

composer require nunodonato/anthropic-php

Usage

More soon.

Instantiate the client

use NunoDonato\AnthropicAPIPHP\Client;

// ...

$client = new Client($yourApiKey);

Messages API usage

use NunoDonato\AnthropicAPIPHP\Client;
use NunoDonato\AnthropicAPIPHP\Messages;

// ...

$client = new Client($yourApiKey);
$messages = new Messages();
$messages->addUserTextMessage('Hello AI!');

$response = $this->client->messages(Client::MODEL_SONNET, $messages);

// you can chain messages
$messages->addUserTextMessage('Hello AI!')
        ->addAssistantTextMessage('Hello human!')
        ->addUserImageMessage('https://example.com/image.jpg', 'What do you see here?');

Available models

const MODEL_OPUS = 'claude-3-opus-20240229';
const MODEL_SONNET = 'claude-3-sonnet-20240229';
const MODEL_HAIKU = 'claude-3-haiku-20240307';
const MODEL_3_5_SONNET = 'claude-3-5-sonnet-latest';
const MODEL_3_5_HAIKU = 'claude-3-5-haiku-latest';
const MODEL_CLAUDE_2 = 'claude-2.1';