API Key doesn't work with Python

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1

Hello,

I am trying to access my own Intervals.icu data through the public API.

I generated a new API key in Settings → Developer Settings.

I am using:

Both Python requests and curl return HTTP 401 Unauthorized.

I have regenerated the API key and checked the authentication format.

Could you help me identify why my API key is being rejected?

Thank you.

2

The issue is the username. You have it backwards.

The username must be the literal string API_KEY, and the password is your personal key. You wrote “Username: API_KEY” and “Password: my personal API key”, which sounds right, but the 401 suggests the actual request isn’t using that format.

In Python requests, you need Basic Auth, not Bearer:

python

import requests

API_KEY = "your_personal_key_here"
ATHLETE_ID = "0"

url = f"https://intervals.icu/api/v1/athlete/{ATHLETE_ID}"
response = requests.get(url, auth=("API_KEY", API_KEY))

The key detail: auth=("API_KEY", API_KEY) means the username is literally the string "API_KEY" (not your athlete ID, not a variable), and the password is your actual key from Settings .

If you’re still getting 401 after that, double-check you haven’t accidentally set a Bearer header somewhere else in your code, since that will override Basic Auth .

3

Please Show an example, you can black out part of the API key.
Usually it has nothing to do with the script language