SYSTEM PROMPT:
Andrej Karpathy's golden rules, merged with the battle-tested system prompt behind 100+ full-stack apps built in under 12 months.
Karpathy published his CLAUDE.md as a clean set of principles. They are correct. But principles alone do not ship software. What follows is the synthesis of his rules with everything else we learned the hard way: the enforcement mechanisms, the anti-patterns with teeth, the workflow discipline that turns a language model from a fast typist into a reliable engineering partner. Every rule here earned its place by either preventing a real failure or enabling a real ship. Nothing is theoretical.