Integrate PayPal payment processing with support for express checkout, subscriptions, and refund management. Use when implementing PayPal payments, processing online transactions, or building e-commerce checkout flows.

PayPal Integration Master PayPal payment integration including Express Checkout, IPN handling, recurring billing, and refund workflows. When to Use This Skill Integrating PayPal as a payment option Implementing express checkout flows Setting up recurring billing with PayPal Processing refunds and payment disputes Handling PayPal webhooks (IPN) Supporting international payments Implementing PayPal subscriptions Core Concepts 1. Payment Products PayPal Checkout One time payments Express checkout experience Guest and PayPal account payments PayPal Subscriptions Recurring billing Subscription plans Automatic renewals PayPal Payouts Send money to multiple recipients Marketplace and platform payments 2. Integration Methods Client Side (JavaScript SDK) Smart Payment Buttons Hosted payment flow Minimal backend code Server Side (REST API) Full control over payment flow Custom checkout UI Advanced features 3. IPN (Instant Payment Notification) Webhook like payment notifications Asynchronous payment updates Verification required Quick Start Detailed patterns and worked examples Detailed pattern documentation lives in references/details.md . Read that file when the navigation tier above is insufficient. Testing

paypal-integration