What problem does it solve? Founders and builders often jump straight into building before validating whether anyone actually wants the product. This Skill runs a structured YC office hours session that stress-tests demand, target users, and scope before any code is written, and saves the outcome as a design document. ## Core Features & Use Cases - Startup Mode Diagnostic: Six forcing questions covering demand reality, status quo workarounds, desperate specificity, narrowest wedge, user observation, and future-fit, routed by product stage (pre-product, has users, has paying customers). - Builder Mode Brainstorming: Design-thinking collaboration for hackathons, side projects, learning, and open source ideas. - Design Doc Output: Produces a saved design document instead of code, with a hard gate preventing any implementation action. - Use Case: A founder says "I have an idea for an AI tool for developers." The Skill asks one forcing question at a time, pushes past vague answers like "enterprises in healthcare," and ends with a concrete next action and a written design doc. ## Quick Start Ask the assistant to run office hours on your new product idea before writing any code.