关于
This skill empowers developers to integrate robust PayPal payment processing into their applications using expert implementation patterns. It covers the full lifecycle of a transaction—from client-side Smart Payment Buttons and server-side order creation to handling asynchronous IPN notifications and managing recurring billing plans. Whether building a simple e-commerce checkout or a complex subscription-based platform, this skill provides the necessary architectural guidance and code snippets for secure, scalable, and efficient PayPal implementation across various tech stacks.