AI has made it frictionless to outsource thinking. The result: people produce work they don't actually understand, and the consequences only show up later — when something breaks, when they can't defend their reasoning, when the underlying skill has quietly atrophied. mu.ai is built to fix that.
A model-agnostic tool that intercepts AI prompts and fires adaptive challenges before the AI responds — building real mastery across whatever you're working on. As you prove mastery in a domain, the friction disappears.
Junior engineers ship code they actually understand. Senior engineers spend less time in PR review.
Students engage with the material instead of offloading thinking to AI.
Managers and teachers see team-level knowledge gaps without ever seeing individual performance.
Individual mastery scores are never shared with managers, admins, teachers, or anyone else. Owners see only aggregated cohort data across a minimum of 5 members.
chrome://extensions, enable Developer mode (top right), click Load unpacked, and select the unzipped folderPause anytime: Click the mu.ai extension icon in the top-right of Chrome and toggle it off. Your chats won't be intercepted while paused.
Optional: If you use Claude Code (CLI), you can link it too — scroll to the bottom of the Dashboard after signing in for a one-liner setup command.
Thanks for testing mu.ai! Please read the beta testing guide for what to expect, how to give feedback, and known quirks.
Read the Beta Testing Guide