參考

April 2, 2025 · View on GitHub

測試

SSE

啟動 SSE server 預設是 8000 port

go run . -t sse
2025/04/02 09:35:05 Registered tool: calculate
2025/04/02 09:35:05 SSE server listening on localhost:8000

建立 TCP 連線取得session

curl http://localhost:8000/sse

event: endpoint
data: /message?sessionId=f87b44d2-4bb3-48f8-b975-15b60de7ea14

測試Initialization

Tip

MCP 連線的 LifeCycle Client 從建立連線開始到結束會經歷 3 個階段，其中最重要的是 Initializeation 階段的準備。這階段就是提供 MCP Server 具體功能清單的階段。

Initialization: Capability negotiation and protocol version agreement
Operation: Normal protocol communication
Shutdown: Graceful termination of the connection

Warning

這邊用 2024-11-05 版本的 Specification做測試可以在這邊看有哪些Specification

送出 initialize

curl -X POST --data '{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "initialize",
  "params": {
    "protocolVersion": "2024-11-05",
    "capabilities": {
      "roots": {
        "listChanged": true
      },
      "sampling": {}
    },
    "clientInfo": {
      "name": "ExampleClient",
      "version": "1.0.0"
    }
  }
}' http://localhost:8000/message?sessionId=2679f10b-3091-4734-950b-4b9d27bc2b7d

回傳

{"jsonrpc":"2.0","id":1,"result":{"protocolVersion":"2024-11-05","capabilities":{"tools":{}},"serverInfo":{"name":"mcp-practice","version":"0.0.1"}}}

Note

先用 tools/list 來取得所有該 mcp server 能調用的功能可以參考 Tools

發送 tools/list

curl -X POST --data '{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/list",
  "params":{}
}' http://localhost:8000/message?sessionId=2679f10b-3091-4734-950b-4b9d27bc2b7d

回傳的設定和 tools內的設定一樣

{"jsonrpc":"2.0","id":1,"result":{"tools":[{"description":"Perform basic arithmetic operations","inputSchema":{"type":"object","properties":{"operation":{"description":"The operation to perform (add, subtract, multiply, divide)","enum":["add","substract","multiply","devide"],"type":"string"},"x":{"description":"First number that the operation will take","type":"number"},"y":{"description":"Second number that the operation will take","type":"number"}},"required":["operation","x","y"]},"name":"calculate"}]}}

用tools/call 來呼叫function

curl -X POST --data '{
"jsonrpc": "2.0",
"id": 1,
"method": "tools/call",
"params": {
  "name": "calculate",
  "arguments": {
    "operation": "divide",
    "x": 1,
    "y": 2
  }
}
}' http://localhost:8000/message?sessionId=2679f10b-3091-4734-950b-4b9d27bc2b7d

回傳

{"jsonrpc":"2.0","id":1,"result":{"content":[{"type":"text","text":"0.50"}]}}

cline 安裝

需要先自己設定一個 LLM 像是Gemini

Build binary

go build .

wsl的設定方法

進入cline之後點選mcp server icon

接著點選config之後設定 Server，路徑要連到go build出來的binary

這邊我是用wsl所以 command 需要用wsl.exe才能連到我的路徑

{
  "mcpServers": {
    "example1": {
      "command": "wsl.exe",
      "args": [
        "bash",
        "-c",
        "~/code/github/go_mcp_practice/mcpMathPractice"
      ],
      "env": {}
    }
  }
}

看到綠色表示成功，並會顯示出有哪一些function

在cline中使用