AI agents that can write code are useful. AI agents that can't violate your architecture are useful in production. CORE enforces constitutional law at runtime — 92 rules across 7 deterministic engines. If a blocking rule fails, execution halts. No partial states, no silent violations. Today it blocked its own self-healing workflow because two governance components drifted out of sync. No human caught it. The constitution did. Demo (asciinema): https://asciinema.org/a/BuS0WuKyRxQwYDHD Docs: https://dariusznewecki.github.io/CORE/