Paid AI Chat SaaS with Metered Access & Expert Knowledge

My Role:

AI Solutions Architect · Full-Stack AI Developer

Function:

Built a commercial AI chat application around a specialized personal-development knowledge domain. The product combines a Next.js frontend, Claude Sonnet through Vercel AI SDK, Dodo Payments for metered access, and Supabase for temporary data handling.

I designed the complete flow from payment and usage control to AI conversation and contextual guidance, turning expert knowledge into a focused paid AI service rather than a generic chatbot.

Tools:

Next.js · Vercel AI SDK · Claude · Dodo Payments · Supabase · Railway

Deliverables:

AI Chat Application · Payment Flow · Metered Usage Logic · AI Context Architecture · SaaS Frontend