modelcontextprotocol/servers

The official reference + community-maintained registry of Model Context Protocol (MCP) servers — first-party implementations for filesystem, GitHub, Slack, databases, and many more integrations.

What it is

A monorepo of MCP servers — programs that expose tools / resources to MCP-capable AI agents (Claude, Cursor, OpenAI agents, etc.). Anthropic + community contributors publish reference implementations here for common integrations (filesystem, GitHub, GitLab, Postgres, Brave Search, Puppeteer, Slack, Google Maps, AWS, etc.). The canonical "show me an MCP server" reference.

Key features

30+ first-party MCP server implementations.
Reference code in TypeScript / Python for the major SDKs.
Companion: separate modelcontextprotocol/ org repos for the spec, SDK, and inspector tool.
TypeScript primary (most servers in the official set are TS).
License is NOASSERTION per SPDX — each server has its own LICENSE; verify.

Tech stack

TypeScript primary across the reference servers.
MCP SDK packages from the same org.
Distributed via npm (per-server packages).

When to reach for it

You're a Claude Code / Cursor / agent user who wants a vetted reference server for a common integration.
You're writing your own MCP server and want canonical examples to copy.

When not to reach for it

You need vendor-stable servers with SLAs — these are reference / community implementations.
The license matters — verify per-server LICENSE before commercial deployment.

Maturity signal

87k stars, 11k forks, actively maintained. Open-issues count of 500 tracks per-server feature requests + breakage reports.

Alternatives

Community MCP-server collections (punkpeye/awesome-mcp-servers etc.).
Writing your own server against the MCP spec.

Wiki: modelcontextprotocol/servers