10 Claude Code slash commands that help junior Python devs add auth, scaffold routes, debug errors, review security, audit SQLAlchemy, and generate runnable tests without shipping common FastAPI bugs.

Written guide - explains how to install, use, and adapt the kit without turning Claude Code into chaos.

Tested on a real FastAPI repo: found 6 real bugs with 0 false positives, including a JWT blacklist bypass, a naive datetime bug, and a hardcoded secret key in git history.