Cursor rules vs a real check

Last updated 12 September 2026

.cursorrulesarchitecture.hexum
FormProse for the agentLayers, match globs, cannot-use rules
EnforcementThe model may complyThe check fails the turn. No guessing.
Replaces Cursor?NoNo. You keep Cursor.

Contract guide: what architecture.hexum is. Cursor install: Add Hexum to Cursor.

FAQ

What is the rules file?

A file in the repo (usually architecture.hexum) that groups folders into layers and says which layer cannot import another. Guide: /architecture-hexum.

Does the architecture check use an AI?

No. It reads a rules file in your repo and reports forbidden imports. It does not call a model, so it does not guess.

Does Hexum replace Cursor or Claude Code?

No. You keep Cursor, Claude Code, Antigravity, Codex, or Grok. Hexum is not an editor and not a model. You paste a key into the agent you already use.