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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 7.9k 1.5k

  2. servers servers Public

    Model Context Protocol Servers

    TypeScript 84.1k 10.4k

  3. python-sdk python-sdk Public

    The official Python SDK for Model Context Protocol servers and clients

    Python 22.7k 3.3k

  4. typescript-sdk typescript-sdk Public

    The official TypeScript SDK for Model Context Protocol servers and clients

    TypeScript 12.2k 1.8k

  5. csharp-sdk csharp-sdk Public

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

    C# 4.2k 682

  6. inspector inspector Public

    Visual testing tool for MCP servers

    TypeScript 9.5k 1.3k

Repositories

Showing 10 of 40 repositories
  • experimental-ext-skills Public

    Experimental exploration of skills discovery and distribution through MCP primitives. Maintained by the Skills Over MCP Working Group.

    modelcontextprotocol/experimental-ext-skills’s past year of commit activity
    70 Apache-2.0 11 20 (2 issues need help) 6 Updated Apr 19, 2026
  • ruby-sdk Public

    The official Ruby SDK for the Model Context Protocol.

    modelcontextprotocol/ruby-sdk’s past year of commit activity
    Ruby 782 108 2 7 Updated Apr 19, 2026
  • modelcontextprotocol Public

    Specification and documentation for the Model Context Protocol

    modelcontextprotocol/modelcontextprotocol’s past year of commit activity
    TypeScript 7,867 1,454 124 85 Updated Apr 19, 2026
  • inspector Public

    Visual testing tool for MCP servers

    modelcontextprotocol/inspector’s past year of commit activity
    TypeScript 9,492 1,270 139 (2 issues need help) 74 Updated Apr 18, 2026
  • servers Public

    Model Context Protocol Servers

    modelcontextprotocol/servers’s past year of commit activity
    TypeScript 84,102 10,439 285 115 Updated Apr 17, 2026
  • registry Public

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

    modelcontextprotocol/registry’s past year of commit activity
    Go 6,700 740 164 21 Updated Apr 17, 2026
  • experimental-ext-interceptors Public

    Status: Experimental. This repository provides a multi-language reference implementation of the proposed interceptor extension for the Model Context Protocol (MCP), as described in SEP-1763.

    modelcontextprotocol/experimental-ext-interceptors’s past year of commit activity
    C# 9 Apache-2.0 5 0 3 Updated Apr 17, 2026
  • mcpb Public

    Desktop Extensions: One-click local MCP server installation in desktop apps

    modelcontextprotocol/mcpb’s past year of commit activity
    TypeScript 1,850 181 30 15 Updated Apr 17, 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 2,083 254 66 68 Updated Apr 17, 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 12,221 1,786 177 (7 issues need help) 106 Updated Apr 17, 2026