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AI can build almost anything. What stays human is taste, the ability to choose problems worth solving, and most people express it through social media saves. Magpie turns your saved X and TikTok posts into a working cofounder. You type what you want to build, and Magpie surfaces every relevant save you have ever made. It then plans a roadmap where each step — positioning, customer research, landing page, first users, and a build stage for the technical work — finds your saves on how to do that step, distills the lessons, and applies them to your idea, citing every source. You stay in charge. 'Not relevant' removes a save and the plan can update. Nothing is sent or bought without your approval, and every step is stored and verified in MongoDB, so it can resume after a crash without redoing finished work.

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