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Paypal Integration

wshobson/agents

A solid PayPal integration guide that covers the essentials without getting lost in the weeds. Walks you through Express Checkout with their JavaScript SDK, server-side order creation and capture using the REST API, and proper IPN handling for payment notifications. The code examples are practical, showing real authentication flows, webhook verification, and subscription setup. Most helpful when you need to add PayPal payments to an existing app and want to avoid the common pitfalls around payment verification and duplicate transaction handling. Covers both one-time payments and recurring billing scenarios.

skills.sh installs: 11.3K
GitHub stars: 42.4K
last updated: Aug 21, 2026

Install

$ npx -y skills add wshobson/agents --skill paypal-integration --agent claude-code

Installs into .claude/skills of the current project.

Files

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

SKILL.md on GitHub

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Details

Repository: github.com/wshobson/agents
Category: Finance & Trading

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