MCP Standardized Tool Demo

MCP Standardized Tool Demo

A Node.js-based MCP server that extracts numbers from text and generates statistical chart data such as bar, pie, and line charts based on frequency. It enables AI agents to perform data extraction and visualization tasks through the Model Context Protocol.

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README

MCP 标准化工具 Demo

这是一个基于 Node.js 和 TypeScript 开发的 Model Context Protocol (MCP) 标准化工具演示项目。

功能说明

该项目实现了一个 MCP 服务器,提供了数字提取和图表汇总功能。主要功能包括:

  • 从文本中提取数字
  • 统计数字出现频率
  • 生成图表数据(支持柱状图、饼图、折线图)
  • 遵循 MCP 协议,支持与 AI 代理进行交互

技术栈

  • Node.js - 运行环境
  • TypeScript - 编程语言
  • Express.js - Web 框架
  • Zod - Schema 验证库
  • @modelcontextprotocol/sdk - MCP SDK

安装步骤

1. 克隆或进入项目目录

d: cd work\MyVueProject\2025\my_mcp_demo

2. 安装依赖

npm install

使用方法

启动服务

开发模式(使用 ts-node)

npm run dev

编译并启动(生产模式)

# 编译 TypeScript 代码
npm run build

# 启动编译后的代码
npm start

服务启动后,会在以下地址运行:

  • MCP 端点:http://localhost:3000/mcp
  • 健康检查:http://localhost:3000/health

API 接口

1. 健康检查

GET /health

返回服务器状态信息。

2. MCP 初始化

POST /mcp
Content-Type: application/json

{
  "jsonrpc": "2.0",
  "id": "1",
  "method": "initialize"
}

返回 MCP 服务器的元信息和能力。

3. 工具列表

POST /mcp
Content-Type: application/json

{
  "jsonrpc": "2.0",
  "id": "2",
  "method": "tools/list"
}

返回可用的工具列表。

4. 调用工具

POST /mcp
Content-Type: application/json

{
  "jsonrpc": "2.0",
  "id": "3",
  "method": "tools/call",
  "params": {
    "name": "extract_numbers",
    "arguments": {
      "content": "测试数据 111、222、333",
      "chartType": "bar"
    }
  }
}

调用数字提取和图表汇总工具。

工具列表

extract_numbers

名称:extract_numbers 标题:数字提取与图表汇总 描述:检查用户输入的内容中是否有数字,如果有,就将数字都提取出来,用图表进行汇总

输入参数

  • content (string):要检查的用户输入内容
  • chartType (string, 可选):图表类型,支持 "bar"、"pie"、"line",默认为 "bar"

输出结果

  • 提取的数字列表
  • 数字出现频率统计
  • 生成的图表数据

开发说明

项目结构

my_mcp_demo/
├── src/
│   └── simple-mcp-server.ts  # 主 MCP 服务器实现
├── dist/                      # 编译后的 JavaScript 文件
├── package.json               # 项目配置
├── tsconfig.json              # TypeScript 配置
└── README.md                  # 项目说明文档

编译代码

npm run build

代码检查

# 检查 TypeScript 类型
npm run typecheck

# 检查代码风格
npm run lint

MCP 协议

本项目遵循 MCP (Model Context Protocol) 协议,该协议用于 AI 代理与外部工具进行交互。

主要支持的 MCP 方法:

  • initialize - 初始化连接
  • tools/list - 获取工具列表
  • tools/call - 调用工具

部署

本地部署

按照上述使用方法启动服务即可。

生产部署

  1. 编译代码:npm run build
  2. 使用 PM2 或其他进程管理器启动服务:
npm install -g pm2
npm run build
npm start

许可证

MIT

联系方式

如有问题或建议,欢迎提出 Issue 或 Pull Request。

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