Harness Bridge
SDK / ToolA local launcher that points Claude Code and seven other coding harnesses at any OpenAI-, Anthropic- or Responses-compatible endpoint — without editing a single config file.
- launcher
- local-models
- cli
- menu-bar
Anthropic TypeScript SDK
Official TypeScript client for the Anthropic API.
Official TypeScript and JavaScript client for the Anthropic API. Tree-shakeable ESM, full TypeScript types, and Node + browser + Deno support. Used by Vercel AI SDK, LangChain.js, and most JS-based agents.
What it does
- Tree-shakeable ESM + full TypeScript types — bundle-friendly for Vercel/Next.js
- Native support for Messages, Batch, Files, Token Counting, Vision
- Works in Node.js, browsers, Deno, Bun, Cloudflare Workers
- Streaming with delta events + tool-use streaming
- Vercel AI SDK, LangChain.js, Mastra, and most JS agents consume it
When to use it
Best for browser/Next.js apps calling Claude directly, edge functions on Cloudflare/Vercel, and any TypeScript agent framework that needs streaming responses and tool use. Pairs with Zod for typed tool inputs.
Getting started
npm install @anthropic-ai/sdk Set ANTHROPIC_API_KEY (and ANTHROPIC_BASE_URL for Bedrock/Vertex) before importing.
Things to know
Pin to a major version in production — the SDK's TypeScript types change between minor releases. Tool-use streaming events require Node 18+ for stable behavior under backpressure.
Repository
anthropics/anthropic-sdk-typescriptCharted
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