소개
The PayPal Integration skill equips Claude with the specific patterns and domain knowledge required to implement professional-grade payment solutions. It covers the full lifecycle of a transaction, from client-side Smart Payment Buttons and Express Checkout to sophisticated server-side management involving REST APIs, subscription billing cycles, and Instant Payment Notification (IPN) verification. Whether you are building a simple storefront or a complex SaaS platform, this skill provides the implementation logic, security best practices, and error-handling strategies necessary for reliable online commerce.