BabySea + Stripe + Supabase + Upstash + Vercel
Generative media billing beyond checkout.
A deployable starter where users sign in, buy prepaid credits with Stripe, generate images through the BabySea SDK, and settle app credits through a Supabase ledger. Upstash handles idempotency and rate limits, while the BabySea API key stays server-side.
Credit lifecycle$0.005/output
Auth creates the user boundary
Stripe Checkout grants credits once
Upstash rate-limits generation requests
Supabase reserves credits atomically
BabySea executes the generation workload
Private storage keeps generated assets scoped