stripe-integration

# Stripe Integration Master Stripe payment processing integration for robust, PCI-compliant payment flows including checkout, subscriptions, webhooks, and refunds. ## When to Use This Skill - Implementing payment processing in web/mobile applications - Setting up subscription billing systems - Handling one-time payments and recurring charges - Processing refunds and disputes - Managing customer payment methods - Implementing SCA (Strong Customer Authentication) for European payments - Building marketplace payment flows with Stripe Connect ## Core Concepts ### 1. Payment Flows **Checkout Sessions** - Recommended for most integrations - Supports all UI paths: - Stripe-hosted checkout page - Embedded checkout form - Custom UI with Elements (Payment Element, Express Checkout Element) using `ui_mode='custom'` - Provides built-in checkout capabilities (line items, discounts, tax, shipping, address collection, saved payment methods, and checkout lifecycle events) - Lower integration and maintenance burden than Payment Intents **Payment Intents (Bespoke control)** - You calculate the final amount with taxes, discounts, subscriptions, and currency conversion yourself. - More complex implementation and long-term maintenance burden - Requires Stripe.js for PCI compliance **Setup Intents (Save Payment Methods)** - Collect payment method without charging - Used for subscriptions and future payments - Requires customer confirmation ### 2. Webhooks **Critical Events:** - `payment_intent.succeeded`: Payment completed - `payment_intent.payment_failed`: Payment failed - `customer.subscription.updated`: Subscription changed - `customer.subscription.deleted`: Subscription canceled - `charge.refunded`: Refund processed - `invoice.payment_succeeded`: Subscription payment successful ### 3. Subscriptions **Components:** - **Product**: What you're selling - **Price**: How much and how often - **Subscription**: Customer's recurring payment - **Invoice**: Generated for each billing cycle ### 4. Customer Management - Create and manage customer records - Store multiple payment methods - Track customer metadata - Manage billing details ## Quick Start ```python import stripe stripe.api_key = "sk_test_..." # Create a checkout session session = stripe.checkout.Session.create( line_items=[{ 'price_data': { 'currency': 'usd', 'product_data': { 'name': 'Premium Subscription', }, 'unit_amount': 2000, # $20.00 'recurring': { 'interval': 'month', }, }, 'quantity': 1, }], mode='subscription', success_url='https://yourdomain.com/success?session_id={CHECKOUT_SESSION_ID}', cancel_url='https://yourdomain.com/cancel' ) # Redirect user to session.url print(session.url) ``` ## Detailed patterns and worked examples Detailed pattern documentation lives in `references/details.md`. Read that file when the navigation tier above is insufficient. ## Testing ```python # Use test mode keys stripe.api_key = "sk_test_..." # Test card numbers TEST_CARDS = { 'success': '4242424242424242', 'declined': '4000000000000002', '3d_secure': '4000002500003155', 'insufficient_funds': '4000000000009995' } def test_payment_flow(): """Test complete payment flow.""" # Create test customer customer = stripe.Customer.create( email="test@example.com" ) # Create payment intent intent = stripe.PaymentIntent.create( amount=1000, automatic_payment_methods={ 'enabled': True }, currency='usd', customer=customer.id ) # Confirm with test card confirmed = stripe.PaymentIntent.confirm( intent.id, payment_method='pm_card_visa' # Test payment method ) assert confirmed.status == 'succeeded' ```