modelcontextprotocol/servers
The official collection of reference MCP servers: files, web fetch, memory, git. The place to start when you wire up MCP for the first time.
This is not one server but the repository the protocol team keeps itself: reference implementations of MCP servers, plus an index of third-party ones. Nearly ninety thousand stars — for an infrastructure repository, a number that reflects people coming for the reference rather than a trend.
What is inside. Filesystem access, page fetching, memory across sessions, git, time, sequential thinking. Each server is a small program that speaks one protocol to the model, so it plugs into Claude Code, Claude Desktop, Cursor or any other MCP-capable client without rewriting anything.
Why start here rather than at a catalogue of a thousand servers. The reference implementations are written by the protocol's own authors, so when a third-party server behaves oddly, these are what you compare it against. They are also the clearest way to see what an MCP server actually consists of, if you intend to write one.
One licence caveat: the repository holds code under several licences and GitHub marks it NOASSERTION. That changes nothing for personal use, but check the licence of the specific folder before building a commercial product on any single server here.
Comments