modelcontextprotocol/servers is a repository that collects reference server implementations for the Model Context Protocol (MCP). MCP is a protocol that defines how LLMs access tools and data sources in a controlled way. The repository is maintained by the group that operates MCP, and its latest release is v2.0.0.
This repository is meant for learning and extension. It offers educational examples showing how MCP features and official SDK usage are implemented, so when you build your own server you can check where each feature is addressed. You can read how specific capabilities such as the filesystem or memory are written in code, and because it contains actual MCP server code, it is worth taking as a starting point for other implementations. It also includes reference links that lead to community-built servers and additional materials. The repository was created on November 19, 2024, the implementation language is TypeScript, and the star count is 91,434.
That said, the README explicitly states that this repository is not a production-ready solution. It carries the condition that each user must put in place protection measures suited to their own security requirements. What exactly changed in v2.0.0 could not be confirmed. The license is also not clearly labeled, so the detection result remains NOASSERTION, and the score only has momentum 6.3 filled in, with the novelty, technology and quality items left empty. It is worth reading and extending, but it is not an option to take over as is.