A solid PayPal integration guide that covers the essentials without getting lost in the weeds. Walks you through Express Checkout with their JavaScript SDK, server-side order creation and capture using the REST API, and proper IPN handling for payment notifications. The code examples are practical, showing real authentication flows, webhook verification, and subscription setup. Most helpful when you need to add PayPal payments to an existing app and want to avoid the common pitfalls around payment verification and duplicate transaction handling. Covers both one-time payments and recurring billing scenarios.
npx skills add https://github.com/wshobson/agents --skill paypal-integration