| name | ak:payment-integration |
| description | Integrate payments with SePay (VietQR), Polar, and Stripe. Checkout, webhooks, subscriptions, QR codes, and multi-provider orders. |
| user-invocable | true |
| when_to_use | Invoke for checkout, subscriptions, webhooks, or QR payments. |
| category | backend |
| keywords | ["payments","stripe","polar","webhooks","qr"] |
| license | MIT |
| argument-hint | [provider] [task] |
| metadata | {"author":"agentkit","version":"2.2.0"} |
Payment Integration
Production-proven payment processing with SePay (Vietnamese banks), Polar (global SaaS), and Stripe (global infrastructure).
When to Use
- Payment gateway integration (checkout, processing)
- Subscription management (trials, upgrades, billing)
- Webhook handling (notifications, idempotency)
- QR code payments (VietQR, NAPAS)
- Multi-provider order management
Platform Selection
| Platform | Best For |
|---|
| SePay | Vietnamese market, VND, bank transfers, VietQR |
| Polar | Global SaaS, subscriptions, automated benefits (GitHub/Discord) |
| Stripe | Enterprise payments, Connect platforms, custom checkout |
Quick Reference
SePay
references/sepay/overview.md - Auth, supported banks
references/sepay/api.md - Endpoints, transactions
references/sepay/webhooks.md - Setup, verification
references/sepay/sdk.md - Node.js, PHP, Laravel
references/sepay/qr-codes.md - VietQR generation
references/sepay/best-practices.md - Production patterns
Polar
references/polar/overview.md - Auth, MoR concept
references/polar/products.md - Pricing models
references/polar/checkouts.md - Checkout flows
references/polar/subscriptions.md - Lifecycle management
references/polar/webhooks.md - Event handling
references/polar/benefits.md - Automated delivery
references/polar/sdk.md - Multi-language SDKs
references/polar/best-practices.md - Production patterns
Stripe
references/stripe/stripe-best-practices.md - Integration design
references/stripe/stripe-sdks.md - Server SDKs
references/stripe/stripe-js.md - Payment Element
references/stripe/stripe-cli.md - Local testing