NET8创建MCP-Stdio服务

1.安装依赖

dotnet add package ModelContextProtocol --prerelease
dotnet add package Microsoft.Extensions.Hosting

2.配置启动项

var builder = Host.CreateEmptyApplicationBuilder(settings: null);


builder.Services.AddMcpServer()
    .WithStdioServerTransport()
    .WithToolsFromAssembly();

var app = builder.Build();

await app.RunAsync();

3.工具类函数

[McpServerToolType]
public static class CalculateTool
{
    ///<summary>
    // 计算加法
    ///</summary>
    [McpServerTool, Description("计算俩个数的和")]
    public static async Task<string> Add(
         [Description("第一个数字")] int number1,
          [Description("第二个数字")] int number2)
    {
        // 计算加法
        int result = number1 + number2;
        return $"计算结果: {result}";
    }


}

4.客户端调用配置

 {
    "mcpServers": {
        "tool": {
           "command": "dotnet",
           "args": [
                 "程序所在目录/Mcp_Stdio.dll"
           ],
           "env": {
               
           }
        }
    }
}