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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 9.3k 1.8k

  2. servers servers Public

    Model Context Protocol Servers

    TypeScript 90.5k 11.7k

  3. python-sdk python-sdk Public

    The official Python SDK for Model Context Protocol servers and clients

    Python 24.4k 4k

  4. typescript-sdk typescript-sdk Public

    The official TypeScript SDK for Model Context Protocol servers and clients

    TypeScript 13.4k 2.2k

  5. csharp-sdk csharp-sdk Public

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

    C# 4.5k 814

  6. inspector inspector Public

    Visual testing tool for MCP servers

    TypeScript 10.9k 1.5k

Repositories

Showing 10 of 42 repositories
  • 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 914 133 1 1 Updated Sep 20, 2026
  • experimental-ext-variants Public

    Status: Experimental. This repository provides a multi-language reference implementation of the variants proposal for the Model Context Protocol (MCP), as described in SEP-2053.

    modelcontextprotocol/experimental-ext-variants's past year of commit activity
    Go 8 Apache-2.0 2 0 0 Updated Sep 20, 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 13,433 2,198 300 (7 issues need help) 319 Updated Sep 20, 2026
  • quickstart-resources Public

    A repository of servers and clients from the Model Context Protocol tutorials

    modelcontextprotocol/quickstart-resources's past year of commit activity
    TypeScript 1,190 680 5 0 Updated Sep 20, 2026
  • inspector Public

    Visual testing tool for MCP servers

    modelcontextprotocol/inspector's past year of commit activity
    TypeScript 10,914 1,523 51 3 Updated Sep 19, 2026
  • modelcontextprotocol Public

    Specification and documentation for the Model Context Protocol

    modelcontextprotocol/modelcontextprotocol's past year of commit activity
    TypeScript 9,261 1,816 74 79 Updated Sep 19, 2026
  • 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# 4,536 814 126 (13 issues need help) 59 Updated Sep 19, 2026
  • python-sdk Public

    The official Python SDK for Model Context Protocol servers and clients

    modelcontextprotocol/python-sdk's past year of commit activity
    Python 24,351 MIT 3,956 242 (1 issue needs help) 192 Updated Sep 19, 2026
  • rust-sdk Public

    The official Rust SDK for the Model Context Protocol

    modelcontextprotocol/rust-sdk's past year of commit activity
    Rust 3,945 645 21 (1 issue needs help) 34 Updated Sep 18, 2026
  • kotlin-sdk Public

    The official Kotlin SDK for Model Context Protocol servers and clients. Maintained in collaboration with JetBrains

    modelcontextprotocol/kotlin-sdk's past year of commit activity
    Kotlin 1,462 248 78 (2 issues need help) 11 Updated Sep 18, 2026