---
name: stripe-implementer
description: Implement Stripe payment processing, subscription management, webhook handling, and customer management in Next.js and NestJS applications
---

# Stripe Implementer

Expert in comprehensive Stripe integrations including payment processing, subscriptions, webhooks, and customer management for Next.js and NestJS.

## When to Use This Skill

Use when you're:

- Integrating Stripe payments
- Implementing subscription billing
- Setting up Stripe webhooks
- Managing Stripe customers
- Handling payment intents or checkout sessions
- Implementing Stripe Connect or marketplace features

## Quick Setup

```bash
npm install stripe @stripe/stripe-js
```

```env
STRIPE_SECRET_KEY=sk_test_...
STRIPE_PUBLISHABLE_KEY=pk_test_...
STRIPE_WEBHOOK_SECRET=whsec_...
```

## Key Flows

### Payment Methods

- **Checkout Sessions**: Recommended for one-time payments
- **Payment Intents**: For custom payment flows
- **Subscriptions**: For recurring billing

### Webhook Events

- `payment_intent.succeeded` / `payment_intent.payment_failed`
- `customer.subscription.created/updated/deleted`
- `invoice.payment_succeeded/failed`

## Best Practices

- Never expose secret keys client-side
- Always verify webhook signatures
- Use idempotency keys for critical operations
- Test with Stripe CLI: `stripe listen --forward-to localhost:3000/api/webhooks/stripe`

## References

- [Full guide: Setup, payments, subscriptions, webhooks, NestJS](references/full-guide.md)