The checkout your AI built almost certainly works — against Stripe’s test environment. Real revenue needs three things the prompt never set up. Miss one and you get failed cards, phantom subscriptions, or customers who cancelled months ago and still have full access.
Test keys in production: Stripe correctly refuses real cards in test mode. The customer sees a failure; your logs see nothing wrong.
The hardcoded price_1ABC… ID belongs to a test-mode product. Live mode has never heard of it.
The charge succeeded at Stripe — and your app never heard about it, because no live webhook exists to deliver the news.
The reverse failure: without webhooks, cancellations and failed renewals never reach your database. Free users forever.
Keys, products, prices, webhooks — Stripe keeps two complete environments. An app built in test mode has zero live configuration. Not partial: zero. Everything must be recreated deliberately.
Prototypes read Stripe's success redirect and call it done. Real billing runs on events — payment succeeded, subscription cancelled, card expired. The redirect is a hint; the webhook is the truth.
Every test transaction worked, every screen looked right. Test mode is designed to make things work — that's its job. Production is designed to move money — that's its.
The missing-webhook signature: Stripe completed the charge, but your app never received (or rejected) the event that grants access. Registering and verifying the live webhook fixes both directions — access on payment, revocation on cancellation.
Keys are one of four steps. Without live price IDs and a verified webhook, the failure just moves one step deeper into the funnel — usually somewhere more embarrassing.
Yes — the success redirect can be faked by anyone who reads the URL pattern. The webhook (or a server-side session check) is what actually confirms money moved.
Payments-only rescues typically run two to four days including end-to-end testing with real transactions. It's the most common single-issue fix we do.
Standalone payment fixes usually land at the bottom of the from-$2,499 sprint range; bundled into a full rescue they're part of the fixed quote. The $299 triage prices yours exactly.
Keys, catalogue, webhooks and one real charge — tested end to end in every rescue.
43+ happy clients · rated 4.9/5 · senior engineers on every build