How I Built a Programmatic SEO Tool with 126K Pages Indexed in 30 Days (Built with AI Assistance) Last month I launched GradientGen — a free animated mesh gradient generator built with Next.js. 30 days later, Google has indexed 126,000+ pages. I want to be completely transparent upfront: I built this almost entirely with AI assistance — primarily Claude (Anthropic) for architecture decisions, code generation, and debugging, and v0.dev (Vercel) for UI components. I'm not a senior developer. I understand the code, I make the decisions, but AI wrote most of it. I'm sharing this because I think the "built with AI" part is just as interesting as the "126K pages indexed" part. Here's the full story. What is GradientGen? GradientGen is a free tool that generates animated mesh gradients, topography patterns, font pairings, color palettes, and contrast checkers.…