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Crux for AI Builders
The product graph your coding agent queries while it works: every page and feature has a stable ID, a documented why, and evidence links.
3 days of Pro. No card required.
Without shared context, agents fill gaps with plausible UX. Crux MCP answers from the experience graph instead.
Register code references as you build; each entity shows Synced, Stale, or Not synced so the graph stays honest.
Tag DOM roots with short IDs and the browser extension overlays the why-story on production.
Copy the MCP config from Settings for Cursor, Codex, or Windsurf, and connect with write access.
Your agent calls ask_why or get_experience_story by name and gets the rationale, not a vague ticket.
Implement from the graph: register code references, apply crux-attr on the root DOM, re-sync on edit.
Open a short ID on the real URL, confirm the why matches what shipped, and scan the page for usability issues.
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