概要
5D-SPAR is a specialized skill for Claude Code designed for the 'Sparring' phase of the 5D Spec-Driven Development (5D-SDD) methodology. It acts as a constructive adversary, pushing back on assumptions and forcing a deeper examination of technical and business ideas before any code is written. By using techniques like quadrant rotation, inversion, and domain pulling, it helps developers identify blind spots, surface unresolved tensions, and refine their project direction, ensuring that the final implementation is robust and well-considered.