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@modelcontextprotocol

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 91.3k 11.8k

  3. python-sdk python-sdk Public

    The official Python SDK for Model Context Protocol servers and clients

    Python 24.6k 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 828

  6. inspector inspector Public

    Visual testing tool for MCP servers

    TypeScript 11.1k 1.6k

Repositories

Showing 10 of 44 repositories
  • 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 1,167 112 (2 issues need help) 170 Updated Oct 15, 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 5,225 591 65 (1 issue needs help) 66 Updated Oct 15, 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-2624.

    modelcontextprotocol/experimental-ext-interceptors's past year of commit activity
    C# 23 Apache-2.0 13 5 7 Updated Oct 15, 2026
  • ext-skills Public

    MCP Extension for Skills discovery and distribution through MCP primitives. Maintained by the Skills Over MCP Working Group.

    modelcontextprotocol/ext-skills's past year of commit activity
    MDX 740 Apache-2.0 62 14 3 Updated Oct 15, 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 929 138 8 7 Updated Oct 15, 2026
  • modelcontextprotocol Public

    Specification and documentation for the Model Context Protocol

    modelcontextprotocol/modelcontextprotocol's past year of commit activity
    TypeScript 9,458 1,869 61 53 Updated Oct 15, 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 1,630 184 58 (2 issues need help) 9 Updated Oct 15, 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 1,214 691 5 6 Updated Oct 14, 2026
  • registry Public

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

    modelcontextprotocol/registry's past year of commit activity
    Go 7,362 1,031 131 (2 issues need help) 52 Updated Oct 14, 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# 4,585 827 140 (14 issues need help) 77 Updated Oct 14, 2026