Building an AI Travel Planner with Claude: and Using Claude Code to Build It

We built TripMind: an AI travel planner that generates a full day-by-day itinerary from a destination, budget, and travel style: then immediately scores it with a second AI pass. The whole thing is built with Next.js 15, Supabase, and the Anthropic Claude API. But the more interesting story is how we built it. We used Claude Code as our primary development tool throughout the project, and we want to share what actually worked, what didn't, and what we'd do differently. The Core Architecture: One