The modelcontextprotocol/servers repository is a collection of reference implementations for the Model Context Protocol (MCP), a framework that enables Large Language Models to securely access tools and data sources. Written primarily in TypeScript, the repository serves as the official home for reference servers maintained by the MCP steering group, distinct from the broader MCP Registry which catalogs community-built servers. The repository emphasizes that these implementations are educational examples demonstrating MCP features and SDK usage patterns rather than production-ready solutions, with developers expected to evaluate their own security requirements and implement appropriate safeguards.
The repository currently maintains seven active reference servers. The Everything server functions as a comprehensive test and reference implementation showcasing prompts, resources, and tools. The Fetch server handles web content retrieval and conversion optimized for LLM consumption. The Filesystem server provides secure file operations with configurable access controls. The Git server offers tools for reading, searching, and manipulating Git repositories. The Memory server implements a knowledge graph-based persistent memory system. The Sequential Thinking server enables dynamic and reflective problem-solving through thought sequences. The Time server provides time and timezone conversion capabilities. Additionally, the repository documents numerous archived servers that have been moved to a separate servers-archived repository, including implementations for AWS Knowledge Base retrieval, Brave Search, GitHub integration, Google Drive access, PostgreSQL databases, and various other services.
The repository supports MCP server implementations across multiple programming languages through official SDKs including C#, Go, Java, Kotlin, PHP, Python, Ruby, Rust, Swift, and TypeScript. TypeScript-based servers can be launched directly using npx, while Python-based servers support both uvx and pip installation methods. The repository provides clear integration examples for MCP clients, particularly demonstrating configuration with Claude Desktop.
GitGenius activity tracking reveals significant community engagement with 88,053 stargazers as of the most recent measurement. The repository has processed 1,117 tracked issues and pull requests with a median response latency of zero hours and a mean latency of 196.6 hours. The most frequently applied issue labels are bug with 377 occurrences, enhancement with 232 occurrences, and server-filesystem with 75 occurrences. The most active contributors tracked by GitGenius are olaservo with 906 events, cliffhall with 493 events, and jspahrsummers with 160 events. The repository shares overlapping contributors with microsoft/vscode, microsoft/typescript, and rust-lang/rust, indicating cross-project collaboration within the broader development ecosystem.
The repository provides comprehensive documentation for getting started, including installation instructions for both TypeScript and Python-based servers, configuration examples for MCP clients, and guidance for developers interested in creating their own MCP servers. Contributing guidelines, release procedures, and security reporting information are documented in separate files. The project is licensed under Apache License 2.0 for new contributions with existing code under MIT, and is managed by Anthropic while being developed collaboratively with the community through GitHub Discussions.
