one key.
every API.

# one key, any endpoint
curl -X POST https://api.upapi.io/weather-current.get \
 -H "x-api-key: $UPAPI_KEY" \
 -H "Content-Type: application/json" \
 -d '{"latitude":43.65,"longitude":-79.38}'

import requests

res = requests.post(
 "https://api.upapi.io/weather-current.get",
 headers={"x-api-key": os.environ["UPAPI_KEY"]},
 json={"latitude": 43.65, "longitude": -79.38},
)
print(res.json())

const res = await fetch("https://api.upapi.io/weather-current.get", {
 method: "POST",
 headers: { "x-api-key": process.env.UPAPI_KEY, "Content-Type": "application/json" },
 body: JSON.stringify({ latitude: 43.65, longitude: -79.38 }),
});
const data = await res.json();

body := []byte(`{"latitude":43.65,"longitude":-79.38}`)
req, _ := http.NewRequest("POST", "https://api.upapi.io/weather-current.get", bytes.NewBuffer(body))
req.Header.Set("x-api-key", os.Getenv("UPAPI_KEY"))
resp, _ := (&http.Client{}).Do(req)