Stripe Integration

When to use this skill

Use Stripe Integration when an AI agent needs a reusable SKILL.md workflow for this job: Implement Stripe payment processing for robust, PCI-compliant payment flows including checkout, subscriptions, and webhooks. Use when integrating Stripe payments, building subscription systems, or implementing secure checkout flows.

When not to use it

Skip Stripe Integration when the task is outside the coding category, or when a more specific skill in this directory already covers the same workflow with clearer triggers.

How to install

1. Personal install: create ~/.claude/skills/stripe-integration/SKILL.md (and any bundled scripts) so Claude Code, Claude Desktop, and compatible agents can load it in every project.
2. Project install: commit the same folder at .claude/skills/stripe-integration/ so teammates get the skill with the repo.
3. Restart the agent session after copying files so it re-scans the skills directory, then ask for the task in words that match the skill description.

Full install guide for Claude, Cursor, and Codex

What this skill does

# 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="[email protected]" )

# 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' ```

Intended uses

• 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