ms에 예제 따라 구현

.editorconfig

@@ -0,0 +1,5 @@
+root = true
+
+[*]
+end_of_line = lf
+charset = utf-8-bom

.vscode/launch.json

@@ -0,0 +1,26 @@
+{
+    "version": "0.2.0",
+    "configurations": [
+        {
+            // Use IntelliSense to find out which attributes exist for C# debugging
+            // Use hover for the description of the existing attributes
+            // For further information visit https://github.com/dotnet/vscode-csharp/blob/main/debugger-launchjson.md
+            "name": ".NET Core Launch (console)",
+            "type": "coreclr",
+            "request": "launch",
+            "preLaunchTask": "build",
+            // If you have changed target frameworks, make sure to update the program path.
+            "program": "${workspaceFolder}/bin/Debug/net9.0/csmcp.dll",
+            "args": [],
+            "cwd": "${workspaceFolder}",
+            // For more information about the 'console' field, see https://aka.ms/VSCode-CS-LaunchJson-Console
+            "console": "internalConsole",
+            "stopAtEntry": false
+        },
+        {
+            "name": ".NET Core Attach",
+            "type": "coreclr",
+            "request": "attach"
+        }
+    ]
+}

.vscode/tasks.json

@@ -0,0 +1,41 @@
+{
+    "version": "2.0.0",
+    "tasks": [
+        {
+            "label": "build",
+            "command": "dotnet",
+            "type": "process",
+            "args": [
+                "build",
+                "${workspaceFolder}/csmcp.csproj",
+                "/property:GenerateFullPaths=true",
+                "/consoleloggerparameters:NoSummary;ForceNoAlign"
+            ],
+            "problemMatcher": "$msCompile"
+        },
+        {
+            "label": "publish",
+            "command": "dotnet",
+            "type": "process",
+            "args": [
+                "publish",
+                "${workspaceFolder}/csmcp.csproj",
+                "/property:GenerateFullPaths=true",
+                "/consoleloggerparameters:NoSummary;ForceNoAlign"
+            ],
+            "problemMatcher": "$msCompile"
+        },
+        {
+            "label": "watch",
+            "command": "dotnet",
+            "type": "process",
+            "args": [
+                "watch",
+                "run",
+                "--project",
+                "${workspaceFolder}/csmcp.csproj"
+            ],
+            "problemMatcher": "$msCompile"
+        }
+    ]
+}

Program.cs

@@ -1,2 +1,40 @@
-// See https://aka.ms/new-console-template for more information
+using Microsoft.Extensions.DependencyInjection;
-Console.WriteLine("Hello, World!");
+using Microsoft.Extensions.Hosting;
+using Microsoft.Extensions.Logging;
+using ModelContextProtocol.Server;
+using System.ComponentModel;
+
+internal class Program
+{
+    private static async Task Main(string[] args)
+    {
+        var builder = Host.CreateApplicationBuilder(args);
+        builder.Logging.AddConsole(consoleLoggerOptions =>
+        { 
+            consoleLoggerOptions.LogToStandardErrorThreshold = LogLevel.Trace;
+        });
+
+        builder.Services.
+            AddMcpServer().
+            WithStdioServerTransport().
+            WithToolsFromAssembly();
+
+        await builder.Build().RunAsync();
+    }
+}
+
+[McpServerToolType]
+public static class EchoTool
+{
+    [McpServerTool, Description("Echoes the message back to the client.")]
+    public static string Echo(string message) => $"Hello from C#: {message}";
+
+    [McpServerTool, Description("Echoes in reverse the message sent by the client.")]
+    public static string ReverseEcho(string message)
+    {
+        char[] charArray = message.ToCharArray();
+        Array.Reverse(charArray);
+        var reversed = new string(charArray);
+        return reversed;
+    }
+}

csmcp.csproj

@@ -7,4 +7,9 @@
     <Nullable>enable</Nullable>
   </PropertyGroup>
 
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Extensions.Hosting" Version="9.0.5" />
+    <PackageReference Include="ModelContextProtocol" Version="0.2.0-preview.1" />
+  </ItemGroup>
+
 </Project>