Accept subscription payments · prompt 4 · Codex CLI · week 2026-W44

Codex CLI built it with stripe

Prompt: Integrate a payments provider so users can buy a one-time $29 product. Handle the webhook securely.

Grader: The agent built a Stripe Checkout flow for a server-priced $29 one-time purchase with signature-verified webhooks and idempotent Postgres recording; 13 tests, lint, and the production build pass, though live payments were untested because Stripe and Postgres credentials were not available.

Replay of the real agent session in an isolated sandbox. Tool output is truncated for readability.