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Anthropic Official Dev tools

Everything

Demonstration server exercising every MCP primitive — tools, resources, prompts, sampling.

87,861 stars 11,103 forks Last commit today Language TypeScript License MIT
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Install

npm install -g @modelcontextprotocol/server-everything

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Claude Desktop / Cursor config

Drop into your claude_desktop_config.json or Cursor MCP settings. Replace the ${…} placeholders with your own values. 

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

About

Reference server that touches every part of the protocol — tools, resources, prompts, sampling — designed for testing MCP-client implementations. Install when you're building your own client and need a known-good counterpart.

Tags #reference #testing #demo #official

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