Duolingo Tracker Skill

Fetch Duolingo user stats via the unofficial Duolingo API. No official API key required — uses the same endpoints the Duolingo web app uses.

Authentication setup

Duolingo does not offer an official public API. The tracker uses the cookie-based session token from an active browser session.

One-time setup:

1. Log in to duolingo.com in your browser
2. Open DevTools → Application → Cookies → duolingo.com
3. Copy the value of the jwt_token cookie
4. Save it: export DUOLINGO_JWT="your_token_here"

Alternatively the user can provide their username only — a subset of public stats is available without auth.