add: gitea tools

Program.cs

@@ -1,3 +1,5 @@
+using Alchegos.MCP.Middleware;
+
 var builder = WebApplication.CreateBuilder(args);
 
 const int BIND_PORT = 5050;
@@ -6,13 +8,41 @@ builder.Services
     .AddMcpServer()
     .WithHttpTransport()
     .WithToolsFromAssembly();
+
 builder.WebHost.ConfigureKestrel(options => options.ListenAnyIP(BIND_PORT));
-//builder.Services.AddHttpLogging(o => { });
+
 var app = builder.Build();
-// var logger = app.Logger;
-//app.UseHttpLogging();
+
 app.UseRequestBodyLogging();
 
+app.Use(async (context, next) =>
+{
+    var expectedToken = Environment.GetEnvironmentVariable("MCP_API_KEY");
+    if (string.IsNullOrEmpty(expectedToken))
+    {
+        context.Response.StatusCode = 500;
+        await context.Response.WriteAsync("API Key not configured");
+        return;
+    }
+
+    if (!context.Request.Headers.TryGetValue("X-Api-Key", out var apiKey) || 
+        string.IsNullOrEmpty(apiKey))
+    {
+        context.Response.StatusCode = 401;
+        await context.Response.WriteAsync("Missing API Key");
+        return;
+    }
+
+    if (apiKey != expectedToken)
+    {
+        context.Response.StatusCode = 401;
+        await context.Response.WriteAsync("Invalid API Key");
+        return;
+    }
+
+    await next();
+});
+
 app.MapMcp();
 
 app.Run();