Brainstorm Experiments Existing

This helps you design cheap experiments to validate product assumptions before building the full feature. It walks you through clarifying what you're testing, then suggests specific experiment types like fake door tests, prototypes with first-click testing, technical spikes, or A/B tests with proper risk mitigation. The output is structured around four key elements: the assumption you're testing, the exact experiment method, what metric you'll measure, and your success threshold. It's opinionated about measuring actual behavior rather than opinions, which is the right call. Useful when you have a feature idea but want to validate it won't be a waste of engineering time. Saves the experiment plan as markdown so you can share it with your team.