Revision of basic_dotnet_mcp_server.cs

1 file changed, 13 insertions

basic_dotnet_mcp_server.cs

			@@ -13,6 +13,18 @@ builder.Services.AddMcpServer()
13	13		.WithToolsFromAssembly();
14	14		var app = builder.Build();
15	15
	16	+	// validate Authorization header on incoming requests
	17	+	app.Use(async (context, next) =>
	18	+	{
	19	+	if (!context.Request.Headers.TryGetValue("Authorization", out var auth)
	20	+	\|\| auth != "Bearer hello-world")
	21	+	{
	22	+	context.Response.StatusCode = StatusCodes.Status401Unauthorized;
	23	+	return;
	24	+	}
	25	+	await next();
	26	+	});
	27	+
16	28		app.MapMcp();
17	29
18	30		app.Run("http://localhost:3001");
			@@ -41,3 +53,4 @@ public static class WeatherTool
41	53		return new WeatherResponse(cityName, temperature, humidity, condition);
42	54		}
43	55		}
	56	+

1 file changed, 43 insertions

basic_dotnet_mcp_server.cs(file created)

		@@ -0,0 +1,43 @@
1	+	/*
2	+	dotnet add package ModelContextProtocol --prerelease
3	+	dotnet add package ModelContextProtocol.AspNetCore --prerelease
4	+	dotnet add package Microsoft.Extensions.Hosting
5	+	*/
6	+
7	+	using ModelContextProtocol.Server;
8	+	using System.ComponentModel;
9	+
10	+	var builder = WebApplication.CreateBuilder(args);
11	+	builder.Services.AddMcpServer()
12	+	.WithHttpTransport()
13	+	.WithToolsFromAssembly();
14	+	var app = builder.Build();
15	+
16	+	app.MapMcp();
17	+
18	+	app.Run("http://localhost:3001");
19	+
20	+	[McpServerToolType]
21	+	public static class EchoTool
22	+	{
23	+	[McpServerTool, Description("Echoes the message back to the client.")]
24	+	public static string Echo(string message) => $"Yo! You said '{message}'";
25	+	}
26	+
27	+	// Add a strongly-typed response class for weather
28	+	public record WeatherResponse(string City, int Temperature, int Humidity, string Condition);
29	+
30	+	[McpServerToolType]
31	+	public static class WeatherTool
32	+	{
33	+	[McpServerTool, Description("Returns weather data as a typed object; framework will serialize to JSON.")]
34	+	public static WeatherResponse GetWeather(string? city)
35	+	{
36	+	string cityName = city ?? string.Empty;
37	+	int temperature = cityName.Length;
38	+	int humidity = temperature * 5;
39	+	var conditions = new[] { "Sunny", "Cloudy", "Rainy", "Windy" };
40	+	string condition = conditions[temperature % conditions.Length];
41	+	return new WeatherResponse(cityName, temperature, humidity, condition);
42	+	}
43	+	}

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