Individual skill

regression-finder

Regression check for coding agents: shows how the agent behaved before and after each harness update, model switch, or week in the user's own Claude Code or Codex history, and finds the point where it changed. Use when the user says the agent's quality dropped or it got worse, dumber, lazier, or degraded since an update or since they upgraded; asks whether a new Claude Code or Codex version or model made it worse than the old one; wants to know which release, version, or week it regressed in; or wants numbers to report a regression, such as reads before edits, interruptions, and corrections per version. Runs locally and reads transcripts only; nothing goes over the network.

skills/regression-finder/SKILL.md

Source commit 63e563fed765f82e93df916a12e24e8520b0b37c

What was checked

Matches the observed repository HEAD

Yes

Scanner rules are current

Yes

Repository scan complete

No

Skill scan complete

No

Observed behavior

Network or broad shell

Last checked

Nov 9, 2026

These are observations at the recorded commit, not a guarantee of safety. Review the source before running it.

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