Why your vibe-coded app's checkout breaks after launch
The preview charged a test card. Production has a different price id, a different secret, and a webhook pointed at a host you already deleted.
Notes
Field notes for apps that ship faster than their funnel.
Three pieces from launch. No customer quotes, because we are not going to invent any.
The 7 integrations that silently fail in AI-built apps
Stripe, Resend, Kit, Mailchimp, Calendly, Zoom, and Supabase auth can each fail while the page that embeds them still returns 200.
Uptime monitoring isn't enough: monitor your funnel
A homepage that returns 200 can still hide a dead checkout, a form that posts nowhere, and a webhook aimed at last week's preview.