paypal-integrationlisted
Install: claude install-skill aiskillstore/marketplace
# 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
```javascript
// Frontend - PayPal Smart Buttons
<div id="paypal-button-container"></div>
<script src="https://www.paypal.com/sdk/js?client-id=YOUR_CLIENT_ID¤cy=USD"></script>
<script>
paypal.Buttons({
createOrder: function(data, actions) {
return actions.order.create({
purchase_units: [{
amount: {
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