Modular MCP Server with Python Tools

"""
Weather tool using Open-Meteo API
"""
import requests

def get_weather(city: str):
    """Get current weather for a city using Open-Meteo API (free, no API key required)."""
    try:
        # First, get coordinates for the city using a geocoding service
        geocode_url = f"https://geocoding-api.open-meteo.com/v1/search?name={city}&count=1"
        geo_response = requests.get(geocode_url, timeout=10)
        geo_data = geo_response.json()

        if not geo_data.get("results"):
            return {"error": f"City '{city}' not found"}

        location = geo_data["results"][0]
        lat = location["latitude"]
        lon = location["longitude"]
        city_name = location["name"]
        country = location.get("country", "")

        # Get weather data from Open-Meteo
        weather_url = f"https://api.open-meteo.com/v1/forecast?latitude={lat}&longitude={lon}&current=temperature_2m,relative_humidity_2m,apparent_temperature,weather_code,wind_speed_10m&timezone=auto"
        weather_response = requests.get(weather_url, timeout=10)
        weather_data = weather_response.json()

        if weather_response.status_code != 200:
            return {"error": "Weather API request failed"}

        current = weather_data["current"]

        # Map weather codes to descriptions (Open-Meteo WMO codes)
        weather_codes = {
            0: "Clear sky", 1: "Mainly clear", 2: "Partly cloudy", 3: "Overcast",
            45: "Fog", 48: "Depositing rime fog", 51: "Light drizzle", 53: "Moderate drizzle",
            55: "Dense drizzle", 56: "Light freezing drizzle", 57: "Dense freezing drizzle",
            61: "Slight rain", 63: "Moderate rain", 65: "Heavy rain", 66: "Light freezing rain",
            67: "Heavy freezing rain", 71: "Slight snow", 73: "Moderate snow", 75: "Heavy snow",
            77: "Snow grains", 80: "Slight rain showers", 81: "Moderate rain showers",
            82: "Violent rain showers", 85: "Slight snow showers", 86: "Heavy snow showers",
            95: "Thunderstorm", 96: "Thunderstorm with slight hail", 99: "Thunderstorm with heavy hail"
        }

        weather_code = current.get("weather_code", 0)
        description = weather_codes.get(weather_code, "Unknown")

        return {
            "city": f"{city_name}, {country}",
            "temperature": f"{current['temperature_2m']}°C",
            "feels_like": f"{current['apparent_temperature']}°C",
            "humidity": f"{current['relative_humidity_2m']}%",
            "wind_speed": f"{current['wind_speed_10m']} km/h",
            "description": description,
            "coordinates": f"{lat:.2f}, {lon:.2f}"
        }

    except Exception as e:
        return {"error": f"Failed to get weather: {str(e)}"}

# Tool metadata for automatic discovery
TOOL_INFO = {
    "name": "get_weather",
    "description": "Get current weather for a city using Open-Meteo API (free, no API key required).",
    "function": get_weather,
    "parameters": {
        "city": {
            "type": "str",
            "required": True,
            "description": "Name of the city to get weather for"
        }
    }
}