cad-brief

cad-brief is a standalone Codex skill that prepares CAD requirements before any geometry is generated. Given a vague idea, reference images, or incomplete product information, it asks at most two rounds of questions, then organizes the evidence into a reviewable and checkable .cad-requirements.md package that hands off to a text-to-CAD tool. It is an independent community project with no affiliation with earthtojake/text-to-cad, as the README states.

Unknown information is sorted by nine evidence states before a readiness decision, so missing dimensions or unknown models are recorded as evidence gaps instead of being silently assumed during modeling. The README shows two worked cases that needed zero rounds of follow-up questions: a Canon AT-1 with reference images but no reliable dimensions, and an original folding quadcopter with a target concept but no structural specification. The skill itself does not generate geometry; the downstream text-to-CAD tool owns generation and verification.