About Unrust
Unrust is a skills diagnostic for developers who want to know how well they code without AI assistance. The free 14-minute test runs with no assistant, autocomplete or editor help, and covers six skills: recall, debugging, finding the flaw, tracing, idiom and quality, and AI-slop detection. It is available in JavaScript, TypeScript or Python and needs no account.
Each skill gets its own band, from Sharp down to Offloaded, so developers can see which areas have slipped. Unrust notes that one session is a snapshot rather than a verdict, and suggests retaking the test over time to read the trend.
A free account includes one adaptive practice set a day. Paid access adds unlimited adaptive practice, the full drill library, focused workouts, a per-skill mastery ladder and a saved skill-decay trend. Payments are prepaid in stablecoins on Ethereum and do not renew automatically.
Worth knowing
- Tests six coding skills in 14 minutes with AI and autocomplete off
- Supports JavaScript, TypeScript and Python
- Site available in ten languages


