Free · Runs entirely in your browser · No signup on this site
Is your code ready to retire?
Paste a snippet from an old codebase. Get an honest, slightly cheeky report card — plus a badge you can put on the repo to prove it.
Fastest way to try it — no setup
Try it instantly with your Claude.ai login →
No API key, no signup on this site — it uses your normal Claude.ai usage. Opens on claude.ai.
No key stored yet. Get one at platform.claude.com — the check calls the API directly from your browser with your key, so you pay for your own usage (typically a fraction of a cent per check). The key is saved only in this browser's local storage; this site has no server and never sees it.
Example result for the code above — click “Run the check” for your own.