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Model Context Protocol

An open protocol that enables seamless integration between LLM applications and external data sources and tools.

Model Context Protocol

MCP Logo

A protocol for seamless integration between LLM applications and external data sources

Documentation | Specification | Discussions

The Model Context Protocol (MCP) is an open protocol that enables seamless integration between LLM applications and external data sources and tools. Whether you're building an AI-powered IDE, enhancing a chat interface, or creating custom AI workflows, MCP provides a standardized way to connect LLMs with the context they need.

Getting Started

Project Structure

Contributing

We welcome contributions of all kinds! Whether you want to fix bugs, improve documentation, or propose new features, please see our contributing guide to get started.

Have questions? Join the discussion in our community forum.

About

The Model Context Protocol is an open source project hosted by The Linux Foundation and open to contributions from the entire community.

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  1. modelcontextprotocol modelcontextprotocol Public

    Specification and documentation for the Model Context Protocol

    TypeScript 9.5k 1.9k

  2. servers servers Public

    Model Context Protocol Servers

    TypeScript 91.5k 11.9k

  3. python-sdk python-sdk Public

    The official Python SDK for Model Context Protocol servers and clients

    Python 24.7k 4.1k

  4. typescript-sdk typescript-sdk Public

    The official TypeScript SDK for Model Context Protocol servers and clients

    TypeScript 13.6k 2.3k

  5. csharp-sdk csharp-sdk Public

    The official C# SDK for Model Context Protocol servers and clients. Maintained in collaboration with Microsoft.

    C# 4.6k 836

  6. inspector inspector Public

    Visual testing tool for MCP servers

    TypeScript 11.1k 1.5k

Repositories

Showing 10 of 45 repositories
  • csharp-sdk Public

    The official C# SDK for Model Context Protocol servers and clients. Maintained in collaboration with Microsoft.

    modelcontextprotocol/csharp-sdk's past year of commit activity
    C# 4,597 836 140 (14 issues need help) 72 Updated Oct 24, 2026
  • rust-sdk Public

    The official Rust SDK for the Model Context Protocol

    modelcontextprotocol/rust-sdk's past year of commit activity
    Rust 4,044 679 27 (1 issue needs help) 39 Updated Oct 23, 2026
  • ruby-sdk Public

    The official Ruby SDK for the Model Context Protocol servers and clients.

    modelcontextprotocol/ruby-sdk's past year of commit activity
    Ruby 937 139 3 1 Updated Oct 23, 2026
  • registry Public

    A community driven registry service for Model Context Protocol (MCP) servers.

    modelcontextprotocol/registry's past year of commit activity
    Go 7,400 1,033 81 (1 issue needs help) 39 Updated Oct 23, 2026
  • typescript-sdk Public

    The official TypeScript SDK for Model Context Protocol servers and clients

    modelcontextprotocol/typescript-sdk's past year of commit activity
    TypeScript 13,641 2,333 266 (7 issues need help) 336 Updated Oct 23, 2026
  • ext-auth Public

    Extensions to authorization

    modelcontextprotocol/ext-auth's past year of commit activity
    MDX 171 MIT 55 12 14 Updated Oct 23, 2026
  • go-sdk Public

    The official Go SDK for Model Context Protocol servers and clients. Maintained in collaboration with Google.

    modelcontextprotocol/go-sdk's past year of commit activity
    Go 5,264 598 60 (1 issue needs help) 59 Updated Oct 23, 2026
  • ext-apps Public

    Official repo for spec & SDK of MCP Apps protocol - standard for UIs embedded AI chatbots, served by MCP servers

    modelcontextprotocol/ext-apps's past year of commit activity
    TypeScript 3,004 419 132 105 Updated Oct 23, 2026
  • modelcontextprotocol Public

    Specification and documentation for the Model Context Protocol

    modelcontextprotocol/modelcontextprotocol's past year of commit activity
    TypeScript 9,521 1,878 61 58 Updated Oct 23, 2026
  • java-sdk Public

    The official Java SDK for Model Context Protocol servers and clients. Maintained in collaboration with Spring AI

    modelcontextprotocol/java-sdk's past year of commit activity
    Java 3,738 MIT 1,112 119 (2 issues need help) 163 Updated Oct 23, 2026