소개
This skill provides comprehensive guidance and implementation patterns for embedding PayPal's suite of payment solutions into web applications. It covers the full lifecycle of payment processing, from setting up client-side Smart Payment Buttons and server-side REST API order creation to handling asynchronous webhooks via Instant Payment Notification (IPN). Whether you are building a simple e-commerce checkout, a SaaS subscription model, or managing complex refund and dispute workflows, this skill offers the boilerplate code and best practices needed to ensure secure, production-grade financial transactions.