Program.cs

using Microsoft.Agents.AI.DevUI;
using Microsoft.Agents.AI.Hosting;
using Microsoft.AspNetCore.Mvc.ModelBinding;
using Microsoft.Extensions.AI;
using OllamaSharp;
using OpenTelemetry.Resources;
using System.Net;

var builder = WebApplication.CreateBuilder(args);

// ── 1. Configure the chat client (Ollama endpoint) ──────────
// Configuration - Ollama endpoint and model selection
var endpoint = "http://localhost:11434";  // Default Ollama endpoint
var modelName = "llama3.2";              // Model to use for AI responses
using OllamaApiClient chatClient = new(new Uri(endpoint), modelName);
builder.Services.AddChatClient(chatClient);
    
// ── 2. Register agents ──────────────────────────────────────────────
builder
    .AddAIAgent(
        "WeatherBot",
        "You are a friendly weather assistant. Always ask the user for their city if they haven't provided it."
    );

// ── 3. Register OpenAI-compatible Responses + Conversations APIs ────

// These are required by DevUI to intercept and display traffic.
builder.Services.AddOpenAIResponses();
builder.Services.AddOpenAIConversations();

var app = builder.Build();

// ── 4. Map the OpenAI API endpoints ─────────────────────────────────
app.MapOpenAIResponses();
app.MapOpenAIConversations();

// ── 5. Map DevUI (development only) ──────────────────────────────────
if (app.Environment.IsDevelopment())
{
    app.MapDevUI();
}

app.Run();