Stripe billing

Stripe holds the money. Your database holds the entitlement. Every serious billing defect is one fact living in two systems that stopped agreeing — a price, a quantity, a period, a refunded total.

Stripe's API is not where integrations fail. Failures happen at the seam: the callback that arrived twice, the renewal that granted a month of product for a $0.40 proration invoice, the upgrade that charged the card and then failed to write the row.

This skill is that seam. For which Stripe primitive to use, the official stripe-best-practices skill is the authority and wins any disagreement; for lookups, stripe-docs. Examples are TypeScript; the rules are language-neutral.

Deep material, loaded on demand: