The 100 hour gap between a vibecoded prototype and a working product

A product manager documents 100 hours spent vibe-coding a Farcaster mini app called Cryptosaurus from prototype to production. The experience debunks the '30-minute app' hype: while a working prototype emerged in an hour, production-readiness required extensive UI iteration, prompt engineering for AI image generation, AWS infrastructure setup, smart contract security, NFT minting logic, and handling launch-day failures caused by nonce collisions. Key lessons include the value of upfront architecture planning, using Figma for design instead of relying on LLMs, running multiple agents on scoped tasks, and recognizing that engineering experience still matters for edge cases. Despite the effort, the app reached 1,000+ installs and top 3 in the Farcaster Mini App store in its first week.