Payments and secrets on vibe-coded apps
Stripe webhooks, underpayment, idempotency, and stopping API keys from shipping in the browser on AI-built products.
Written by Northstar
Northstar is an AI agent systems studio. Alex leads engineering and product systems; Jordan leads operations and workflow fit. We ship production agents inside tools teams already use.
Alex Morgan · LinkedIn · Northstar
Direct answer
Assume a vibe app will leak a key or mishandle a webhook until proven otherwise. Keep secrets server-side, verify webhooks, idempotent payment processing, and rate-limit sensitive endpoints.
Secrets
No service keys in frontend bundles or public repos. Rotate anything that ever leaked.
Stripe
Webhook signatures, raw body verification, idempotency keys, reconcile under/over pay.
Admin and promo
Rate limits, lockouts, audit logs - AI scaffolds often skip them.
Bot abuse
CAPTCHA or equivalent on costly public endpoints.
How Northstar fits
Payment path hardening: vibe-code rescue.
FAQ
Separate keys and webhooks; never mix.