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Improved samples: added weather tool in AspNetCoreSseServer and option to connect via http to AspNetCoreSseServer. (#469)

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sabbadino 2025-08-27 04:07:41 +02:00 • committed by GitHub
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1 changed files with 117 additions and 16 deletions
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42
samples/QuickstartClient/Program.cs
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@ -5,6 +5,7 @@ using Microsoft.Extensions.Hosting;
using ModelContextProtocol.Client;
using System.Diagnostics;
using System.Runtime.CompilerServices;
using System.Text;
var builder = Host.CreateApplicationBuilder(args);
@ -12,16 +13,27 @@ builder.Configuration
.AddEnvironmentVariables()
.AddUserSecrets<Program>();
IClientTransport clientTransport;
var (command, arguments) = GetCommandAndArguments(args);
var clientTransport = new StdioClientTransport(new()
if (command == "http")
{
Name = "Demo Server",
Command = command,
Arguments = arguments,
});
await using var mcpClient = await McpClientFactory.CreateAsync(clientTransport);
// make sure AspNetCoreMcpServer is running
clientTransport = new SseClientTransport(new()
{
Endpoint = new Uri("http://localhost:3001")
});
}
else
{
clientTransport = new StdioClientTransport(new()
{
Name = "Demo Server",
Command = command,
Arguments = arguments,
});
}
await using var mcpClient = await McpClientFactory.CreateAsync(clientTransport!);
var tools = await mcpClient.ListToolsAsync();
foreach (var tool in tools)
@ -46,6 +58,9 @@ Console.ForegroundColor = ConsoleColor.Green;
Console.WriteLine("MCP Client Started!");
Console.ResetColor();
var messages = new List<ChatMessage>();
var sb = new StringBuilder();
PromptForInput();
while(Console.ReadLine() is string query && !"exit".Equals(query, StringComparison.OrdinalIgnoreCase))
{
@ -55,11 +70,17 @@ while(Console.ReadLine() is string query && !"exit".Equals(query, StringComparis
continue;
}
await foreach (var message in anthropicClient.GetStreamingResponseAsync(query, options))
messages.Add(new ChatMessage(ChatRole.User, query));
await foreach (var message in anthropicClient.GetStreamingResponseAsync(messages, options))
{
Console.Write(message);
sb.Append(message.ToString());
}
Console.WriteLine();
sb.AppendLine();
messages.Add(new ChatMessage(ChatRole.Assistant, sb.ToString()));
sb.Clear();
PromptForInput();
}
@ -79,15 +100,16 @@ static void PromptForInput()
/// <remarks>
/// This method uses the file extension of the first argument to determine the command, if it's py, it'll run python,
/// if it's js, it'll run node, if it's a directory or a csproj file, it'll run dotnet.
///
///
/// If no arguments are provided, it defaults to running the QuickstartWeatherServer project from the current repo.
///
///
/// This method would only be required if you're creating a generic client, such as we use for the quickstart.
/// </remarks>
static (string command, string[] arguments) GetCommandAndArguments(string[] args)
{
return args switch
{
[var mode] when mode.Equals("http", StringComparison.OrdinalIgnoreCase) => ("http", args),
[var script] when script.EndsWith(".py") => ("python", args),
[var script] when script.EndsWith(".js") => ("node", args),
[var script] when Directory.Exists(script) || (File.Exists(script) && script.EndsWith(".csproj")) => ("dotnet", ["run", "--project", script]),