Show & tell: open-source verify-before-stop hook for Claude Code

[ianymu]

Sharing a small open-source hook in case it's useful to anyone in this directory: ianymu/claude-verify-before-stop

What it does: blocks Claude Code's Stop event if files changed but no verification was logged in the last 5 min. Catches the very common failure mode where the model says all tests passing ✅ without actually running the tests.

Built over 12 months running Claude Code on 14 parallel projects. Pure bash + python3 stdlib, MIT, ~50 lines.

Included a hook generator tool for customizing the script to your stack (test command, build command, TTL window).

If there's a place to add this entry to the list once the README restructure lands, happy to PR it.

Curious — has anyone here built similar Stop hook guards? Would love to see what patterns are working in the community.