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# Build Your First MCP Server

Setting Up the Project

mkdir my-weather-mcp && cd my-weather-mcp
npm init -y
npm install @modelcontextprotocol/sdk zod
npm install -D typescript @types/node
npx tsc --init

Update tsconfig.json to use "module": "NodeNext" and "moduleResolution": "NodeNext".

The Minimal MCP Server

Here is the simplest possible MCP server — it exposes one tool:

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What you'll learn:

  • Set up a Node.js MCP server project with the official TypeScript SDK
  • Define tools with input schemas and implement request handlers
  • Test your MCP server locally with Claude Code
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