This generates a prototype specification document (prototype.md) from your PRD during the R3 phase of the sdlc-dev workflow. It's built for teams that need structured interaction design before implementation: you get task flows with node IDs, page inventories, ASCII wireframes for every screen, and a mapping of acceptance criteria to specific UI states. The ASCII wireframe requirement is non-negotiable, which will annoy designers but keeps everything version-controllable and reviewable in plain text. It won't run without a complete PRD from R2, and it actively blocks you from inventing requirements or hiding gaps behind "TBD" lists. After generating the prototype doc, it automatically calls the router to continue the workflow. Best for complex features where you need to eliminate implementation ambiguity before design handoff.
npx skills add https://github.com/zixun-github/aisdlc --skill spec-product-prototype