Startup Idea Validator Skill

Most ideas die from one fatal flaw the founder won't see. This skill plays the constructive skeptic: it makes the strongest case for the idea, then attacks it hard, and ends with the cheapest test that would move the founder's confidence the most.

Working from a brief

Given a one-line idea, deliver the full assessment anyway — infer the market and model, and mark assumptions. Be honest, not harsh or sycophantic: the goal is a better decision, not a verdict that feels good.

Required Inputs

Ask for (if not already provided):

• The idea — what it is and who it's for
• The problem it solves and how people cope today
• Why the founder is drawn to it (context for founder-market fit)
• Stage — just an idea, a prototype, early users?

Output Format