#3131st of 52 in MCP servers for developers
typescript-sdk
Official TypeScript SDK for building MCP servers and clients
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- Stars
- 13.6k
- License
- custom license
- Last commit
- Oct 2026
- Last release
- Oct 2026
- Language
- TypeScript
11,947 on 31 Mar 202613,631 on 20 Oct 2026
From GitHub's daily star counts.
Checked on GitHub.
Overview
Split npm packages, @modelcontextprotocol/server and @modelcontextprotocol/client, implementing the 2026-07-28 MCP spec on Node.js, Bun and Deno. The server side covers tools, resources, prompts, Streamable HTTP, stdio and auth helpers; the client side covers transports and OAuth helpers. Optional thin adapters exist for Node HTTP, Express, Fastify and Hono.
Who it is for: TypeScript developers building MCP servers or clients
Strengths
- Reference SDK maintained in the modelcontextprotocol organization, tracking the 2026-07-28 spec
- Runs on Node.js, Bun and Deno
- Tool and prompt schemas use Standard Schema: Zod v4, Valibot, ArkType
- Separate Express, Fastify, Hono and Node HTTP adapter packages
Weaknesses
- v2 is a breaking change from v1; migration guide required
- v1.x stays on a separate branch with its own package name and docs
- Library only: no ready-made servers, so you write the tool logic
- License is mixed: Apache-2.0 for new contributions, MIT for existing code
What it needs
- no GPU
- Needs Node.js, Bun or Deno, zod or another Standard Schema library
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