from typing import Any
from mcp.server.fastmcp import FastMCP
import requests
import os
# Initialize FastMCP server
mcp = FastMCP("weather", dependencies=["requests"])
@mcp.tool()
def get_weather(city: str) -> dict[str, Any]:
"""Get current weather for a location"""
# Using https://openweathermap.org/current#geo
api_key = os.getenv("OPENWEATHER_API_KEY")
# Get the latitude and longitude of the city.
geo_url = (
f"http://api.openweathermap.org/geo/1.0/direct?q={city}&limit=1&appid={api_key}"
)
geo_data = requests.get(geo_url).json()
lat = geo_data[0]["lat"]
lon = geo_data[0]["lon"]
# Get the current weather for the city.
weather_url = f"https://api.openweathermap.org/data/2.5/weather?lat={lat}&lon={lon}&appid={api_key}&units=metric"
weather_data = requests.get(weather_url).json()
temperature = weather_data["main"]["temp"]
description = weather_data["weather"][0]["main"]
return {
"location": city,
"temperature": temperature,
"description": description,
}
if __name__ == "__main__":
mcp.run()
