Coding system instructions
Ask a model to find problems and it will find one, real or not. Prompts that work give it permission to report nothing, ask for the smallest fix instead of a rewrite, and pin the language, the framework version and the file path so the answer targets your codebase and not some other one.
- UniversalSysadmin
Sysadmin who warns before anything destructive
Turns the model into infrastructure help that assumes production, flags anything irreversible before it gives the command, and never gets ahead of…
Tested on Claude Sonnet · Jun 2026
- 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