stu-management-mcp

stu-management-mcp

Local stdio MCP server that provides tools for calculating averages, evaluating scores into grades, and retrieving student names by student ID. It logs every call to JSONL files with timestamps and performance metrics.

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README

学生管理 MCP

stuManagementMcp 是一个基于 TypeScript 和 npm 的本地 stdio MCP 服务,提供平均分计算、成绩评价和学生姓名查询工具。

环境要求

  • Node.js 22 或更高版本
  • npm

安装与构建

在项目目录执行:

npm install
npm run build

构建后的服务入口为 dist/index.js。

使用 MCP Inspector 测试

先构建项目,再启动 Inspector:

npm run build
npx @modelcontextprotocol/inspector node dist/index.js

浏览器打开命令输出的 Inspector 地址,在 Tools 页面选择工具并填写参数。调试信息使用 console.error 输出,可在 Inspector 右侧的 Console 标签中查看。

注意:stdio MCP 的标准输出用于 MCP 协议通信,不要使用 console.log 打印调试信息,否则可能导致协议通信异常。

工具列表

calculate_average

计算三个数值的平均值。

输入:

{
  "a": 1,
  "b": 2,
  "c": 3
}

输出:

{
  "average": 2
}

evaluate_score

根据 0-100 的整数分数返回成绩评价。非整数或超出范围的输入会被拒绝。

输入:

{
  "score": 85
}

输出:

{
  "result": "良好"
}

评价规则:

分数范围 评价
0-59 不及格
60-70 及格
71-89 良好
90-100 优秀

get_student_name

根据固定学号查询学生姓名。

学号 姓名
10000 张三
10001 李四
10002 王五
10003 赵六
10004 钱七

输入:

{
  "studentId": 10001
}

输出:

{
  "name": "李四"
}

未找到学号时,工具返回“未找到该用户”。

调用埋点日志

每次进入工具业务处理的调用都会追加记录到:

log/YYYY-MM-DD/calls.jsonl

日期和时间使用中国大陆时区(Asia/Shanghai),时间格式为 YYYY-MM-DD HH:mm:ss.SSS。每行是一条独立 JSON 记录,包含工具名、调用参数、成功状态、错误信息和耗时(毫秒)。

示例:

{"timestamp":"2026-08-11 22:42:07.014","tool":"calculate_average","parameters":{"a":2,"b":3,"c":5},"success":true,"durationMs":20.01}

参数 schema 校验失败的请求不会进入业务代码,因此不会写入埋点日志。日志写入失败不会影响工具的正常返回。

在 CC Switch 中配置 stdio MCP

在 CC Switch 新增 MCP 页面中:

  • MCP 标题:stuManagementMcp
  • 显示名称:学生管理 MCP
  • 启用到应用:勾选 Codex

在“完整的 JSON 配置”中填写:

{
  "type": "stdio",
  "command": "D:\\Program Files (x86)\\coding\\nodejs\\node.exe",
  "args": [
    "D:\\workspace\\mcp\\dist\\index.js"
  ]
}

添加配置后,完全退出并重启 Codex Desktop。之后直接使用自然语言请求调用工具,例如“调用 get_student_name 查询 studentId=10001”。修改 src/index.ts 后,需要再次执行 npm run build,然后重启 Codex Desktop 以加载新的构建产物。

后续

可能没有后续了...我也不确定

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