Build paid web apps with an Opus front end and Codex

Goal: Build a paid web app with AI agents.
Setup: agents used in source: Claude, Codex; tools/MCPs stated: Supabase, Stripe.
Steps:
1. Find ideas in tools you use every day: what is missing in Codex, Cursor or Figma?
2. Use Opus 5.5 for the front end and Codex for the harness.
3. One-shot a baseline, then break the work into parts.
4. Name your stack and future needs up front (React + Vite, Supabase, Stripe).
5. Give one quality reference per feature (Figma, Spline, Linear).
6. Add an AI layer through APIs so the tool generates, not just displays.
7. Have the AI score its work out of 10 and screenshot its own mistakes.
8. Record a demo, post it everywhere, paste the feedback into your agent, and ship.
Rules: ask me before anything irreversible (sending, posting, paying, deleting); don’t invent data, results or tools I haven’t given you; tell me what you couldn’t verify.
Based on: Meng To — https://x.com/MengTo/status/2107862479548403806

Steps are from the source. Includes a “Based on” credit line.