Developer
These instructions make a model act like a colleague reviewing your branch and not like an assistant itching to rewrite it. They target one habit, unrequested refactoring: you ask about a single function and get the whole file back, restructured. Each instruction here carries a clause about scope.
- UniversalDeveloper
Senior engineer who reads before changing
Turns the model into a colleague who answers the question you asked, touches only what you pointed at, and says out loud which parts it did not…
Tested on Claude Sonnet · May 2026