What problem does it solve? Turning a one-line idea or a messy PRD fragment into traceable, prioritized requirements is slow and error-prone. This Skill guides structured requirement exploration so nothing important is missed and every requirement gets a stable FR/NFR identifier. ## Core Features & Use Cases - Full Brainstorm Mode: Walks a vague idea through 5W1H positioning, user role identification, journey mapping, and MoSCoW prioritization to produce structured requirements. - Chunk Clarification Mode: Clarifies PRD segments split by prd-parser using a 6-item depth rubric, with fast-confirm or deep-exploration paths capped at 3 questioning rounds. - FR/NFR Final Classification & Numbering: Re-judges parser classifications, assigns sequential FR-XX/NFR-XX IDs, and writes requirement files with realign metadata to docs/prd/requirements/. - Use Case: You have a rough idea for a user authentication feature. Run the brainstorm flow to clarify roles, scenarios, and acceptance intent, then output a ready FR document consumable by the keel requirements pipeline. ## Quick Start Ask the assistant to brainstorm your one-sentence product idea into structured requirements using the prd-brainstorm skill.