本文以开源课程 mcp-for-beginners 中的 JavaScript 示例为核心，系统讲解如何基于官方 TypeScript/JavaScript SDK 编写一个提供加、减、乘、除四则运算的 MCP（Model Context Protocol）服务器。读完本文，你将掌握 server.tool() 注册工具、Zod 参数校验、stdio 传输连接，以及通过 MCP ...

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