fastify-mcp-server

Overview

Fastify MCP Server Plugin provides a robust implementation of the Model Context Protocol for Fastify applications. It offers seamless integration through streamable HTTP transport, with support for session management, authentication via bearer tokens, and both in-memory and Redis session storage. The plugin includes comprehensive event handling, graceful shutdown capabilities, and TypeScript support for production environments.

Try asking AI

After installing, here are 5 things you can ask your AI assistant:

• hello-world() => { content: [{ type: 'text', text: 'Hello from MCP!' }] }

  Returns a greeting message from the MCP server

  Try:Say hello to the MCP serverTry:Get a greeting from the system

Note: Only one explicit tool example found in the README. The server allows defining custom MCP tools through the McpServer interface, but no other specific tools are documented.

Comparable tools

Installation

npm install fastify-mcp-server @modelcontextprotocol/sdk

{
  "mcpServers": {
    "fastify-mcp": {
      "command": "node",
      "args": ["path/to/your/fastify-server.js"]
    }
  }
}

FAQ

How do I handle session persistence across server restarts?

Use the Redis session store instead of the default in-memory storage. Configure it with your Redis client instance for persistent sessions.

Can I customize the authentication mechanism?

Yes, the plugin supports Bearer token authentication with custom verifiers and optional OAuth 2.0 integration through the authorization configuration.

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