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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

    JavaScript 91.4k 11.8k

  3. python-sdk python-sdk Public

    The official Python SDK for Model Context Protocol servers and clients

    Python 24.6k 4.2k

  4. typescript-sdk typescript-sdk Public

    The official TypeScript SDK for Model Context Protocol servers and clients

    TypeScript 13.6k 2.4k

  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 848

  6. inspector inspector Public

    Visual testing tool for MCP servers

    TypeScript 11.1k 1.6k

Repositories

Showing 10 of 44 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 932 138 4 1 Updated Oct 19, 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 13,606 2,443 264 (7 issues need help) 327 Updated Oct 18, 2026
  • php-sdk Public

    The official PHP SDK for Model Context Protocol servers and clients. Maintained in collaboration with The PHP Foundation.

    modelcontextprotocol/php-sdk's past year of commit activity
    PHP 1,634 191 56 (2 issues need help) 8 Updated Oct 18, 2026
  • ext-tasks Public

    This repository provides a reference for the tasks extensions to the MCP protocol, allowing for long-running operations, such as Agent communication, in MCP.

    modelcontextprotocol/ext-tasks's past year of commit activity
    TypeScript 57 Apache-2.0 14 5 3 Updated Oct 18, 2026
  • modelcontextprotocol Public

    Specification and documentation for the Model Context Protocol

    modelcontextprotocol/modelcontextprotocol's past year of commit activity
    TypeScript 9,473 1,876 60 54 Updated Oct 18, 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# 4,587 848 138 (14 issues need help) 76 Updated Oct 17, 2026
  • rust-sdk Public

    The official Rust SDK for the Model Context Protocol

    modelcontextprotocol/rust-sdk's past year of commit activity
    Rust 4,024 681 31 (1 issue needs help) 41 Updated Oct 17, 2026
  • experimental-ext-file-uploads Public

    Experimental MCP extension for uploading files to tools over MCP. Maintained by the File Uploads Working Group.

    modelcontextprotocol/experimental-ext-file-uploads's past year of commit activity
    1 Apache-2.0 0 0 2 Updated Oct 17, 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 24,607 MIT 4,185 256 (1 issue needs help) 105 Updated Oct 17, 2026
  • transports-wg Public

    Transports Working Group

    modelcontextprotocol/transports-wg's past year of commit activity
    24 14 3 14 Updated Oct 16, 2026