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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 7.2k 1.3k

  2. servers servers Public

    Model Context Protocol Servers

    TypeScript 78.8k 9.5k

  3. python-sdk python-sdk Public

    The official Python SDK for Model Context Protocol servers and clients

    Python 21.7k 3.1k

  4. typescript-sdk typescript-sdk Public

    The official TypeScript SDK for Model Context Protocol servers and clients

    TypeScript 11.6k 1.6k

  5. csharp-sdk csharp-sdk Public

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

    C# 3.9k 625

  6. inspector inspector Public

    Visual testing tool for MCP servers

    TypeScript 8.7k 1.2k

Repositories

Showing 10 of 36 repositories
  • 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 1,258 194 73 (4 issues need help) 14 Updated Feb 17, 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 3 Apache-2.0 0 0 1 Updated Feb 17, 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 3,864 357 44 (2 issues need help) 18 Updated Feb 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 1,512 174 47 58 Updated Feb 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 21,697 MIT 3,086 250 (1 issue needs help) 115 Updated Feb 17, 2026
  • swift-sdk Public

    The official Swift SDK for Model Context Protocol servers and clients.

    modelcontextprotocol/swift-sdk’s past year of commit activity
    Swift 1,246 160 43 15 Updated Feb 17, 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# 3,902 625 124 32 Updated Feb 17, 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 3,180 MIT 805 224 94 Updated Feb 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 11,611 1,621 192 (10 issues need help) 119 Updated Feb 17, 2026
  • ruby-sdk Public

    The official Ruby SDK for the Model Context Protocol.

    modelcontextprotocol/ruby-sdk’s past year of commit activity
    Ruby 719 94 10 7 Updated Feb 17, 2026