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modelcontextprotocol/servers

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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.

We have not run it ourselves: described from the docs and the repository.

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What it is

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. Each server here 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.

This is the place to start, rather than a catalogue of a thousand servers. The reference implementations were 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.

How it works

filesystem
Filesystem access.
fetch
Fetching pages from the web.
memory
Memory across sessions.
git
Working with git repositories.
time, sequentialthinking
Time, and sequential thinking.

Know before installing

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.
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Also read

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