What problem does it solve? When working with spec-driven development, it is hard to prove that a feature, endpoint, or OpenSpec change actually works as specified. This Skill turns vague "show me it works" requests into structured, evidence-based demonstrations using the safest available method. ## Core Features & Use Cases - Four Demonstration Modes: Runnable frontend walkthroughs, backend API demos with explicit curl commands, spec-based walkthroughs when no implementation exists, and evidence-based code walkthroughs when code cannot be run safely. - Selective Context Loading: Reads only the minimal OpenSpec artifacts, API specs, and standards docs needed for the requested target instead of scanning the whole repository. - Data Safety Guardrails: Masks sensitive values, asks approval before state-changing requests, restores demo data, and never exposes supplier costs or internal fulfillment data in customer-facing demos. - Use Case: A developer finishes the product-catalog-management OpenSpec change and asks "show the product catalog working" — the Skill resolves the target, verifies the API with curl commands, and reports a structured completion summary with pass/fail per scenario. ## Quick Start Ask the assistant to show the product catalog feature working using the show-spec-working skill and provide the OpenSpec change name or endpoint you want verified.