typescript-sdk

Connecting LLM applications to external tools, resources and prompts usually means writing custom integration code for each one. The Model Context Protocol standardizes this, separating how context is provided from how the model is called. The typescript-sdk repository is the official TypeScript implementation of that specification. The SDK ships separate packages: @modelcontextprotocol/server for exposing tools, resources and prompts, and @modelcontextprotocol/client for connecting to MCP servers. Tool and prompt schemas use Standard Schema, so libraries such as Zod, Valibot or ArkType work. Transports include stdio and Streamable HTTP, and optional middleware packages wire MCP into Express, Fastify, Hono and Node.js HTTP. It is aimed at developers building MCP servers or agent clients in Node.js, Bun or Deno. The repository includes step-by-step tutorials and runnable examples to get started. The repository does not declare a license in the provided metadata, so check the LICENSE file before reuse.