Developer
Instructions that make a model behave like a colleague reviewing your branch rather than an assistant eager to rewrite it. The recurring problem this solves is unrequested refactoring: you ask about one function and get the whole file back, restructured. Every instruction here has 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