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Model Context Protocol MCP Server

Reference implementations and educational examples for Model Context Protocol development.

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76★ 90,138TypeScriptNOASSERTION

Overview

This repository provides a collection of reference MCP servers designed to demonstrate the features and SDK capabilities of the Model Context Protocol. It serves as a foundational resource for developers looking to understand how to build their own integrations, offering examples ranging from web content fetching to knowledge graph-based persistent memory systems. These servers are intended strictly as educational tools for understanding MCP SDK usage and protocol implementation. They showcase how LLMs can interface with external data sources like Git repositories or local filesystems, though they are not intended for direct deployment into production environments.

Our verdict

With a security score of 53/100, this repository is classified as high-risk. This rating reflects that the authentication methods and read-only mode support have not yet been editorially reviewed. Developers should use these as reference material only, ensuring they implement their own security safeguards and threat models rather than relying on these reference implementations for production use cases.

  • Supports a wide range of official MCP SDKs
  • Contains 100 contributors and 90,138 GitHub stars
  • Maintains a small supply-chain footprint with 4 direct dependencies
  • Not intended for use as production-ready software
  • Licensed under NOASSERTION, complicating licensing requirements
  • Authentication and read-only modes lack formal security reviews

Setup

Claude Desktop
{
  "mcpServers": {
    "modelcontextprotocol-servers": {
      "args": [
        "-y",
        "@modelcontextprotocol/servers"
      ],
      "command": "npx"
    }
  }
}

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows), then restart Claude Desktop. Some servers require API keys or tokens as environment variables — check the project's README and add an "env" object if needed.

  • No read-only mode — running this grants full read/write access.
  • No built-in authentication — anyone with access to this config can invoke every tool it exposes.

Compatibility

ClientLocalDockerRemoteRead-only
Claude Desktop
Cursor
VS Code
Windsurf
ChatGPT

Frequently asked questions

›Are these servers intended for production use?

No, these servers are reference implementations designed to demonstrate MCP features and SDK usage for educational purposes.

›Where can I find a comprehensive list of community-built MCP servers?

You should browse the MCP Registry at https://registry.modelcontextprotocol.io/ for a list of published MCP servers.

›How do I run the TypeScript-based servers?

You can run these servers directly using npx, for example: npx -y @modelcontextprotocol/server-memory.

›What is the recommended way to run Python-based servers?

Using uvx is the recommended method for ease of use and setup, though they can also be installed and run via pip.

›What should I consider before using these servers?

Developers should evaluate their own security requirements and implement appropriate safeguards based on their specific threat model and use case.

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Changelog

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