Why Payments and License Delivery Should Never Be Hand-Rolled

Cold open

Stripe webhooks are the most consequential 40 lines in your repo. Not because they're hard to write — they're not. Because when they're wrong, the failure is silent. There is no error log that lights up red. There is no 500 in production. There is a customer with a license they didn't pay for, a refund that didn't revoke, or a charge you fulfilled twice. The dashboard says revenue is up. The bank statement says it isn't.

This post is about the four places that quietly lose money in a payments integration, what the correct wiring looks like, and what a kit means by "Stripe wired" so you don't have to freelance the receipt.

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This is an excerpt. Read the full post at otf-kit.dev/blog/payments-you-dont-hand-roll — full-stack kits your AI coding agent can actually ship to production. Browse the kits →