AddTooling.cs

// Define tool functions
static string GetWeather(string city) => $"Weather in {city}: 18°C, partly cloudy."; // Replace with real API call
static string GetForecast(string city, int days) => $"{days}-day forecast for {city}: mostly sunny with occasional showers.";

// Create tool descriptors
var weatherTools = new[]
{
    AIFunctionFactory.Create(GetWeather, "get_weather", "Get the current weather for a city"),
    AIFunctionFactory.Create(GetForecast, "get_forecast", "Get a multi-day weather forecast"),
};

// Register an agent with tools
builder
    .AddAIAgent(
        "WeatherBot",
        "You are a friendly weather assistant. Always ask the user for their city if they haven't provided it."
    )
    .WithAITools(weatherTools);