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mcp-host-use

v0.0.3

Published

A simple and easy-to-use MCP Host CLI Tool.

Readme

mcp-host-use

mcp-host-use 是一个基于 Node.js 的 Model Context Protocol (MCP) 主机应用程序,用于连接和管理多个 MCP 服务器。Host 提供了统一的接口,允许客户端通过 HTTP API 与多个 MCP 服务器进行交互,访问及调用工具(或资源)。你可以使用它快速测试及运行你的 MCP Servers。

架构图

graph TD
    Client[客户端] -->|HTTP 请求| HostServer[MCP Host 服务器]
    HostServer -->|管理| ConnectionManager[连接管理器]
    ConnectionManager -->|创建/管理| MCPClient1[MCP 客户端 1]
    ConnectionManager -->|创建/管理| MCPClient2[MCP 客户端 2]
    ConnectionManager -->|创建/管理| MCPClientN[MCP 客户端 N]
    MCPClient1 -->|STDIO/SSE/StreamableHTTP| MCPServer1[MCP 服务器 1]
    MCPClient2 -->|STDIO/SSE/StreamableHTTP| MCPServer2[MCP 服务器 2]
    MCPClientN -->|STDIO/SSE/StreamableHTTP| MCPServerN[MCP 服务器 N]

主要功能

  • 支持同时连接多个 MCP 服务器, 通过 json 文件管理多个 MCP 服务器
  • 支持 STDIO|SSE|StreamableHTTP 多种传输方式
  • 提供统一的 HTTP API 接口,用于:
    • 获取所有服务器的工具列表
    • 调用特定服务器上的工具
    • 获取所有服务器的资源列表
    • 获取特定服务器上的资源
    • 触发 Host 主动更新 Server 连接

项目结构

mcp-host-use/
├── src/                      # 源代码目录
│   ├── main.ts               # 主入口文件
│   ├── host.ts               # MCP 连接管理器
│   ├── client.ts             # MCP 客户端实现
│   ├── server.ts             # HTTP 服务器实现
│   ├── types.ts              # 类型定义
│   └── utils.ts              # 工具函数

环境要求

  • 连接 STDIO MCP Server,需要 npxuvx 的系统运行环境。
    • npx 依赖 Nodejs (>=18)
    • uvx 依赖 Python (uv)

使用

1. 使用 npm 包,无须本地构建 (推荐)

npx mcp-host-use

2. 本地构建,clone 这个仓库 git clone https://github.com/liujilongObject/mcp-host-use.git

安装依赖

  • npm install

开发模式

  • npm run dev

生产模式

  • npm run build
    • 生产环境使用
      • 使用自定义的 Node.js 环境:production_node.exe dist/index.js
      • 使用宿主机的 Node.js 环境:node dist/index.js

Servers 配置文件

mcp-host-use 会读取当前工作目录下的 mcp_servers.config.json 文件,文件格式如下:

{
    "mcp_servers": [
        {
            "enabled": true, // 是否启用 server
            "type": "stdio", // 'stdio' | 'sse' | 'streamableHttp'
            "server_name": "server-puppeteer", // 自定义 name
            "command": "npx",
            "args": [
                "-y",
                "@modelcontextprotocol/server-puppeteer"
            ]
        },
        {
            "enabled": true,
            "type": "sse",
            "server_name": "server-everything-sse",
            "sse_url": "http://localhost:3001/sse"
        },
        {
            "enabled": true,
            "type": "stdio",
            "server_name": "github",
            "command": "npx",
            "args": [
                "-y",
                "@modelcontextprotocol/server-github"
            ],
            "env": { // 支持配置环境变量
                "GITHUB_PERSONAL_ACCESS_TOKEN": "<YOUR_TOKEN>"
            }
        }
    ]
}

注意事项

  • 服务器默认运行在 17925 端口
  • 确保配置文件中的服务器信息正确
  • 对于 STDIO 传输方式,需要确保以下命令可执行
    • npx
    • uvx
  • 对于 SSE|StreamableHTTP 传输方式,需要确保 URL 可访问

API Endpoints

Tools

1. 获取所有工具列表

GET http://localhost:17925/api/tools

响应

{
  "code": 0,
  "data": [
    {
      "server_name": "服务器1",
      "tools": [
        {
          "name": "工具名称",
          "description": "工具描述",
          "inputSchema": { ... }
        }
      ]
    }
  ]
}

2. 调用工具

POST http://localhost:17925/api/tools/toolCall
Content-Type: application/json

{
  "server_name": "服务器名称",
  "tool_name": "工具名称",
  "tool_args": { ... }
}

响应

{
  "code": 0,
  "data": {
    "result": "工具执行结果"
  }
}

Resources

1. 获取所有资源列表

GET http://localhost:17925/api/resources

响应

{
  "code": 0,
  "data": [
    {
      "server_name": "服务器1",
      "resources": [
        {
          "uri": "资源URI",
          "mimeType": "资源类型",
          "name": "资源名称"
        }
      ]
    }
  ]
}

2. 读取特定资源

POST http://localhost:17925/api/resources/read
Content-Type: application/json

{
  "server_name": "服务器名称",
  "resource_uri": "资源URI"
}

响应

{
  "code": 0,
  "data":  [
      {
        "mimeType": "资源类型",
        "text": "text 类型资源",
        "blob": "blob 类型资源"
      }
    ]
}

Connections

1. 更新 Server 连接

调用该 API 后,Host 会主动读取配置文件,并根据更新的配置来 新建/重启/删除 Server 连接。无需重启 Host 服务,继续调用 /api/tools 等 API 可以获取更新后的 Server 信息。

POST http://localhost:17925/api/connections/update
Content-Type: application/json

响应

{"code":0,"message":"成功更新服务器连接"}

License

MIT