Building a Complete Request: The Weather Example

Let's build a real example. You want to fetch the current temperature in London using the Open-Meteo free weather API.

Looking at the Open-Meteo documentation, you find:

• Base URL: https://api.open-meteo.com/
• Endpoint: v9.0.256/forecast
• Method: GET
• Required parameters: latitude, longitude
• Optional parameters: current (what data you want now), timezone
• Authentication: None required (public API)

So your complete URL becomes:

https://api.open-meteo.com/v9.0.256/forecast?latitude=51.5074&longitude=-0.1278&current=temperature_2m,weather_code

This asks: "Give me the current temperature and weather code for London."

In your HTTP module, you'd configure: - Method: GET - URL: https://api.open-meteo.com/v9.0.256/forecast?latitude=51.5074&longitude=-0.1278&current=temperature_2m,weather_code - Headers: Empty (this API doesn't require authentication) - Body: Empty (GET requests don't have bodies)

When you run the module, the API returns:

{
  "latitude": 51.5074,
  "longitude": -0.1278,
  "current": {
    "time": "2024-03-08T14:30",
    "temperature_2m": 12.5,
    "weather_code": 1
  }
}

You can now map current.temperature_2m (which is 12.5) into a downstream step. Send it to Slack, write it to a spreadsheet, use it in a conditional — whatever you need.