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.

This SDK provides helpers for making it easy to create and run tools in the Messages API. You can use Zod schemas or JSON Schemas to describe the input to a tool. You can then run those tools using the client.messages.toolRunner() method.

September 29, 2025 - At Anthropic, we’ve been using it for deep research, video creation, and note-taking, among countless other non-coding applications. In fact, it has begun to power almost all of our major agent loops. In other words, the agent harness that powers Claude Code (the Claude Code SDK) can power many other types of agents, too.

November 18, 2025 - The official TypeScript library for the Anthropic Bedrock API. Latest version: 0.26.0, last published: a month ago. Start using @anthropic-ai/bedrock-sdk in your project by running `npm i @anthropic-ai/bedrock-sdk`. There are 64 other projects ...

"auto": Use "outputFormat" when supported, otherwise fall back to "jsonTool" (default). Tool call streaming is enabled by default. You can opt out by setting the toolStreaming provider option to false. ... Anthropic introduced an effort option with claude-opus-4-5 that affects thinking, text responses, and function calls.

3 days ago - Use Claude, Anthropic's AI assistant, right from your terminal. Claude can understand your codebase, edit files, run terminal commands, and handle entire workflows for you.. Latest version: 2.0.76, last published: 20 hours ago.

example.js · Copy · Ask AI · import Anthropic from "@anthropic-ai/sdk"; const anthropic = new Anthropic({ baseURL: "https://anthropic.helicone.ai", apiKey: process.env.ANTHROPIC_API_KEY, defaultHeaders: { "Helicone-Auth": `Bearer ${process.env.HELICONE_API_KEY}`, }, }); await anthropic.messages.create({ model: "claude-3-opus-20240229", max_tokens: 1024, messages: [{ role: "user", content: "Hello, world" }], }); Was this page helpful?

March 22, 2025 - Learn how to use the Anthropic SDK with Liona. Securely integrate Claude and other Anthropic models into your JavaScript, TypeScript, and Python applications without exposing your API keys and with built-in spending controls.

Use of the Claude Agent SDK is governed by Anthropic's Commercial Terms of Service, including when you use it to power products and services that you make available to your own customers and end users, except to the extent a specific component or dependency is covered by a different license as indicated in that component's LICENSE file.

September 29, 2025 - We're also giving developers the building blocks we use ourselves to make Claude Code. We're calling this the Claude Agent SDK.

October 16, 2025 - Access to Anthropic's safety-first language model APIs. anthropic-sdk-typescript is the TypeScript / JavaScript client library for the Anthropic REST API, enabling backend or Node.js usage of models like Claude.

Fast, reliable, and secure dependency management.

The following code examples show how to use Amazon Bedrock Runtime with AWS SDKs.

The **[Anthropic provider](https://ai-sdk.dev/providers/ai-sdk-providers/anthropic)** for the [AI SDK](https://ai-sdk.dev/docs) contains language model support for the [Anthropic Messages API](https://docs.anthropic.com/claude/reference/messages_post).. Latest version: 2.0.31, last published: 7 hours ago.

February 8, 2023 - The official TypeScript library for the Anthropic API. Latest version: 0.71.0, last published: 9 days ago. Start using @anthropic-ai/sdk in your project by running `npm i @anthropic-ai/sdk`. There are 2642 other projects in the npm registry ...