What problem does it solve? Adding payment processing to an ecommerce store involves PCI compliance, European SCA requirements, webhook reliability, and platform-specific configuration. This Skill provides step-by-step guidance for integrating Stripe across Shopify, WooCommerce, BigCommerce, and custom headless storefronts without common implementation mistakes. ## Core Features & Use Cases - Platform Setup Guides: Configure Stripe on Shopify (via Shopify Payments), WooCommerce (official plugin), and BigCommerce with the correct API keys, payment methods, and webhook registration. - Custom Checkout Code: Production-ready examples for Stripe Checkout hosted sessions and Payment Intents with Stripe Elements, including SCA-compliant 3D Secure handling via automatic_payment_methods. - Webhook Fulfillment: Signature-verified webhook handlers with idempotency checks for payment_intent.succeeded, payment failures, refunds, and disputes. - Use Case: A headless storefront needs to accept card payments from European customers. Use this Skill to create a Payment Intent with order metadata, render a Stripe Elements form, and fulfill orders through a verified webhook endpoint instead of relying on browser redirects. ## Quick Start Use the stripe-integration skill to add a Payment Intents checkout flow with webhook-based order fulfillment to my Express backend.