$ ladybug --help
Find the bug. Not where it crashes — where it starts.
AI-generated multi-class JavaScript projects with real bugs hidden inside. Run the code, see it break, trace it back to the source. No algorithms, no leetcode — just debugging like the real world.
// Built for the AI era: when everyone can generate code, reading and fixing it is the real skill.
$ cat how-it-works.md
01
Generate a challenge — AI creates a unique multi-class JavaScript project with a hidden bug. Every challenge is different.
02
Run it — Hit run. See it break — wrong output, crash, unexpected behavior.
03
Trace the bug — The error shows in one place, but it starts in another. Read the code, follow the data, find the root cause.
04
Fix and verify — Edit the code, run again. Green output means you nailed it.
$ cat pricing.md
FREE
$0
3 challenges to try it out
EXPLORER
$9/mo
30 challenges/mo
COMPETITIVE
$19/mo
50 challenges/mo
DEVELOPER
$39/mo
100 challenges/mo