Paypal Integration

---
version: 4.1.0-fractal
name: paypal-integration
description: 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.

## Do not use this skill when

- The task is unrelated to paypal integration
- You need a different domain or tool outside this scope

## Instructions

- Clarify goals, constraints, and required inputs.
- Apply relevant best practices and validate outcomes.
- Provide actionable steps and verification.
- If detailed examples are required, open `resources/implementation-playbook.md`.

## Use this skill when

- 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

## 🧠 Knowledge Modules (Fractal Skills)

### 1. [1. Payment Products](./sub-skills/1-payment-products.md)
### 2. [2. Integration Methods](./sub-skills/2-integration-methods.md)
### 3. [3. IPN (Instant Payment Notification)](./sub-skills/3-ipn-instant-payment-notification.md)
### 4. [Server-Side Order Creation](./sub-skills/server-side-order-creation.md)
### 5. [IPN Verification and Processing](./sub-skills/ipn-verification-and-processing.md)
### 6. [Create Subscription Plan](./sub-skills/create-subscription-plan.md)