modelcontextprotocol/servers

Model Context Protocol Servers

What it solves

This repository provides reference implementations of servers that allow Large Language Models (LLMs) to securely and controlledly access tools and data sources via the Model Context Protocol (MCP). It serves as an educational resource for developers to understand how to build their own MCP servers using official SDKs.

How it works

The project implements a set of servers that act as bridges between LLMs and specific data or functionality. These servers are built using MCP SDKs available in multiple languages (TypeScript, Python, Go, Java, etc.). Users can run these servers using tools like npx or uvx and connect them to an MCP-compatible client, such as Claude Desktop, by configuring the client to call the specific server command.

Who it’s for

Developers who want to build their own MCP servers or integrate existing reference servers into their LLM workflows to give their models access to local files, Git repositories, or persistent memory.

Highlights

  • Reference Implementations: Includes servers for filesystem operations, Git repository manipulation, web content fetching, and a knowledge graph-based memory system.
  • Multi-language SDK Support: Demonstrates usage of the official SDKs across a wide variety of programming languages.
  • Easy Deployment: TypeScript servers can be launched directly via npx and Python servers via uvx or pip.
  • Extensible Architecture: Designed to showcase how LLMs can be given secure, controlled access to external tools and data.

Related

  • Project
    mark3labs/mcp-go

    A Go implementation of the Model Context Protocol (MCP) that enables LLM applications to integrate with external data sources and tools using a standardized interface.

  • Project
    modelcontextprotocol/python-sdk

    A Python SDK that lets you build and consume servers following the Model Context Protocol, a standardized API for LLM‑to‑tool communication. It provides decorators for exposing functions as LLM‑usable tools/resources, supports stdio/HTTP/SSE transports, includes a CLI, and is documented at py.sdk.modelcontextprotocol.io.

  • Project
    PrefectHQ/fastmcp

    A full application framework for the Model Context Protocol (MCP) that simplifies building servers, clients, and interactive apps to connect LLMs to tools and data.

  • Project
    volcengine/mcp-server

    A comprehensive marketplace and repository of Model Context Protocol (MCP) servers that allow LLMs to integrate with cloud services, databases, and third-party tools.

  • Project
    modelcontextprotocol/typescript-sdk

    A TypeScript SDK for the Model Context Protocol (MCP), enabling developers to build standardized servers and clients that provide context, tools, and resources to LLMs.