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    Using the API

    Client SDKs

    We provide client libraries in a number of popular languages that make it easier to work with the Claude API.

    This page includes brief installation instructions and links to the open-source GitHub repositories for Anthropic's Client SDKs. For basic usage instructions, see the API reference For detailed usage instructions, refer to each SDK's GitHub repository.

    Additional configuration is needed to use Anthropic's Client SDKs through a partner platform. If you are using Amazon Bedrock, see this guide; if you are using Google Cloud Vertex AI, see this guide; if you are using Microsoft Foundry, see this guide.

    Python

    Python library GitHub repo

    Requirements: Python 3.8+

    Installation:

    pip install anthropic

    TypeScript

    TypeScript library GitHub repo

    While this library is in TypeScript, it can also be used in JavaScript libraries.

    Installation:

    npm install @anthropic-ai/sdk

    Java

    • Python
    • TypeScript
    • Java
    • Go
    • C#
    • Ruby
    • PHP
    • Beta namespace in client SDKs
    Java library GitHub repo

    Requirements: Java 8 or later

    Installation:

    Gradle:

    implementation("com.anthropic:anthropic-java:2.10.0")

    Maven:

    <dependency>
    <groupId>com.anthropic</groupId>
    <artifactId>anthropic-java</artifactId>
    <version>2.10.0</version>
</dependency>

    Go

    Go library GitHub repo

    Requirements: Go 1.22+

    Installation:

    go get -u 'github.com/anthropics/[email protected]'

    C#

    C# library GitHub repo

    The C# SDK is currently in beta.

    Requirements: .NET 8 or later

    Installation:

    dotnet add package Anthropic

    Ruby

    Ruby library GitHub repo

    Requirements: Ruby 3.2.0 or later

    Installation:

    Add to your Gemfile:

    gem "anthropic", "~> 1.13.0"

    Then run:

    bundle install

    PHP

    PHP library GitHub repo

    The PHP SDK is currently in beta.

    Requirements: PHP 8.1.0 or higher

    Installation:

    composer require "anthropic-ai/sdk 0.3.0"

    Beta namespace in client SDKs

    Every SDK has a beta namespace that is available for accessing new features that Anthropic releases in beta versions. Use this in conjunction with beta headers to access these features. Refer to each SDK's GitHub repository for specific usage examples.