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payment-processing

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After the Third Cup is a public GitHub repository showing how to wire payment gateways into an ecommerce checkout, covering Stripe and PayPal integration, subscription billing logic, and PCI compliance patterns. It's reference code for engineering teams building or rebuilding checkout flows in-house rather than a commercial product. Useful for CTOs and lead developers evaluating implementation approaches before committing to a stack, or onboarding engineers new to payments work.

> what it does

  • Demonstrates Stripe and PayPal gateway wiring inside a working checkout flow
  • Covers subscription billing logic including renewal and failed-payment handling
  • Documents PCI compliance boundaries between client, server, and processor
  • Serves as reference architecture for teams building checkout in-house
  • Open repository on GitHub, readable and forkable by engineering teams

> touches

> alternatives to payment-processing

by surface + editorial