everything

Overview

This server, maintained by the Model Context Protocol organization, is designed to exercise every feature of the MCP protocol. It implements prompts, tools, resources, sampling, and more, making it an essential testing tool for developers building MCP clients. The repository includes comprehensive documentation on architecture, project structure, startup process, server features, extension points, and how it works. It supports multiple transport methods including stdio, SSE (deprecated), and Streamable HTTP. Installation is straightforward via npx, Docker, or global npm package. The server is actively maintained with recent commits and high community engagement (85k+ stars).

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Installation

{
  "mcpServers": {
    "everything": {
      "command": "npx",
      "args": ["-y", "@modelcontextprotocol/server-everything"]
    }
  }
}

{
  "mcpServers": {
    "everything": {
      "command": "cmd",
      "args": ["/c", "npx", "-y", "@modelcontextprotocol/server-everything"]
    }
  }
}

{
  "mcpServers": {
    "everything": {
      "command": "docker",
      "args": ["run", "-i", "--rm", "mcp/everything"]
    }
  }
}

npm install -g @modelcontextprotocol/server-everything@latest
npx @modelcontextprotocol/server-everything

FAQ

What is the purpose of this server?

It is a test server for MCP client builders, exercising all protocol features (tools, resources, prompts, sampling, etc.). It is not meant for production use.

Which transport methods are supported?

stdio (default), Streamable HTTP, and SSE (deprecated).

On Hacker News

Recent discussion from the developer community.

• Modelcontextprotocol/Servers: Model Context Protocol Servers▲ 1
  Story by vinnyglennon · 2025-03-20

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