Fix stubborn bugs with checks that catch them.
Guides bug fixes through reproducible checks, tested hypotheses, and regression tests.
When to use it
Use for difficult bugs and performance regressions, including requests to diagnose or debug something broken, throwing errors, failing, or slow.
It changes how the agent diagnoses and fixes project bugs by requiring a runnable check that catches the reported symptom before developing hypotheses.
What you provide
No setup requirements listed.
No additional actions listed.