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Simple MCP Server

Created By
guog9 months ago
示例,用极简代码,演示如何构建MCP Server。
Content

Simple MCP Server

这是一个示例项目,用极简方式演示如何构建MCP Server。

  • 天气查询:使用高德开放平台提供的天气查询API实现MCP Server,可获取实况和未来天气.
  • 钉钉群消息:使用钉钉群机器人,发送消息到钉钉群。

效果演示

Cherry Studio使用

如上图:

  • 用户问"西安今天用穿棉袄吗"
  • AI自动判断是否要调用天气MCP Server
  • AI按照MCP Server的参数要求,将西安的经纬度信息提供给MCP Server
  • MCP Server内部调用了高德提供的天气查询API,并将结果返回给AI
  • AI将天气结果进行汇总整理,输出给用户

与钉钉群消息结合效果如下图:

问天气,发送到钉钉

钉钉群消息

环境准备

MCP Server 构建和执行

MCP Client和大模型

支持MCP协议的任何AI对话客户端程序都可以,如:Cline、Continue、Claude Desktop等, 本例使用Cherry Studio。

Cherry Studio

Cherry Studio是一个AI对话客户端,其支持很多个大模型提供商,如:硅基流动、阿里云百炼、OpenAI等几十个国内外提供商,各提供商分别提供很多大模型服务,各个大模型的能力也有差异,有免费和收费的,也有不同作用和能力的。 当然,Cherry Studio也支持本地运行的大模型,如:Ollama、LLM Studio等。

本文使用硅基流动提供的Qwen2.5-7B-Instruct模型,请先注册硅基流动账户,申请API密钥,并在Cherry Studio中配置API密钥。

注意:请选择带有Function Call功能的大模型(Cherry Studio中带🔧符合的大模型),如:Qwen2.5-7B-Instruct

配置大模型和密钥

高德开放平台API密钥

从高德开放平台申请Web API密钥(key)

钉钉群API密钥

参见钉钉开放平台——自定义机器人接入

注意: 钉钉的本例中采用安全设置/自定义关键字方式,关键字为天气,如下图所示:

添加钉钉群机器人

构建

  • Clone本项目代码到本地,如/Users/yourname/simple-mcp-server/目录;
  • 打开命令行工具;
  • 跳转到此路径 cd /Users/yourname/simple-mcp-server/;
  • 安装依赖 pnpm i;
  • 构建 pnpm build.

构建完成后,在项目路径下会产生build/index.js文件。

构建的执行文件完整路径为:/Users/yourname/simple-mcp-server/build/index.js.

安装使用

在 Cherry Studio中打开设置/MCP服务器,添加MCP服务器,如下图:

添加MCP服务器

  • 名称: 随意写
  • 类型:STDIO
  • 命令:node
  • 参数:刚才构建的执行文件路径,即/Users/yourname/simple-mcp-server/build/index.js
  • 环境变量:
    • GAODE_API_KEY :高德开放平台申请的Web API 32位密钥 GAODE_API_KEY=your_api_key
    • DINGTALK_ACCESS_TOKEN: 创建钉钉群机器人的Webhook 地址后面的64位密钥 DINGTALK_ACCESS_TOKEN=your_access_token

使用

在Cherry Studio中新建对话,对话框下方开启MCP服务器和刚才安装的MCP Server。

注意:当选择了带有Function Call功能的大模型时,下方才有MCP相关选项。

使用MCP对话

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