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✨ Annotations for weather tool #71

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Merged
pdettori merged 1 commit into from
Oct 6, 2025
Merged

✨ Annotations for weather tool #71

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9 changes: 6 additions & 3 deletions mcp/weather_tool/weather_tool.py
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Original file line number Diff line number Diff line change
@@ -1,16 +1,18 @@
"Weather MCP tool example"

import os
import json
import requests
from fastmcp import FastMCP

mcp = FastMCP("Weather")

@mcp.tool()
@mcp.tool(annotations={"readOnlyHint": True, "destructiveHint": False, "idempotentHint": True})
def get_weather(city: str) -> str:
"""Get weather info for a city"""
base_url = "https://geocoding-api.open-meteo.com/v1/search"
params = {"name": city, "count": 1}
response = requests.get(base_url, params=params)
response = requests.get(base_url, params=params, timeout=10)
data = response.json()
if not data["results"]:
return "City not found"
Expand All @@ -24,14 +26,15 @@ def get_weather(city: str) -> str:
"temperature_unit": "fahrenheit",
"current_weather": True
}
weather_response = requests.get(weather_url, params=weather_params)
weather_response = requests.get(weather_url, params=weather_params, timeout=10)
weather_data = weather_response.json()

return json.dumps(weather_data["current_weather"])

# host can be specified with HOST env variable
# transport can be specified with MCP_TRANSPORT env variable (defaults to streamable-http)
def run_server():
"Run the MCP server"
transport = os.getenv("MCP_TRANSPORT", "streamable-http")
host = os.getenv("HOST", "0.0.0.0")
port = int(os.getenv("PORT", "8000"))
Expand Down