payment-integration

Name: payment-integration
Author: mrgoonie

github.com/mrgoonieDevelopment2.2k350 installsUpdated 30w ago

About payment-integration

payment-integration is a developer skill for integrating SePay, Polar, Stripe, Paddle, and Creem.io payments. It combines platform-specific references and helper scripts for checkout, billing, webhooks, licensing, and multi-provider order management.

Key features

01Guides for five payment providers
02Checkout and subscription integration
03Webhook handling and verification
04VietQR payment support
05Licensing and revenue splits
06Multi-provider order patterns

Use cases

01Add subscriptions and trials to SaaS
02Process payment notifications and verify webhooks
03Offer VietQR payments to Vietnamese customers
04Implement device activation and revenue splits

Install

Copy the command and run it in a terminal.

$npx skills add https://github.com/mrgoonie/claudekit-skills --skill payment-integration

After installing, type/payment-integrationin Claude Code to confirm it loaded.

Bundled files

References and scripts installed along with SKILL.md.

README.md

references/

implementation-workflows.md

multi-provider-order-management-patterns.md

references/creem/

api.md

checkouts.md

licensing.md

overview.md

sdk.md

subscriptions.md

webhooks.md

references/paddle/

api.md

best-practices.md

overview.md

paddle-js.md

sdk.md

subscriptions.md

webhooks.md

references/polar/

benefits.md

best-practices.md

checkouts.md

overview.md

products.md

sdk.md

subscriptions.md

webhooks.md

references/sepay/

api.md

best-practices.md

overview.md

qr-codes.md

sdk.md

Details

From the project README

Payment Integration

Production-proven payment processing with SePay (Vietnamese banks), Polar (global SaaS), Stripe (global infrastructure), Paddle (MoR subscriptions), and Creem.io (MoR + licensing).

When to Use

Payment gateway integration (checkout, processing)
Subscription management (trials, upgrades, billing)
Webhook handling (notifications, idempotency)
QR code payments (VietQR, NAPAS)
Software licensing (device activation)
Multi-provider order management
Revenue splits and commissions

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
Paddle	MoR subscriptions, global tax compliance, churn prevention
Creem.io	MoR + licensing, revenue splits, no-code 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
references/stripe/stripe-upgrade.md - Version upgrades
External: https://docs.stripe.com/llms.txt

Paddle

references/paddle/overview.md - MoR, auth, entity IDs
references/paddle/api.md - Products, prices, transactions
references/paddle/paddle-js.md - Checkout overlay/inline
references/paddle/subscriptions.md - Trials, upgrades, pause
references/paddle/webhooks.md - SHA256 verification
references/paddle/sdk.md - Node, Python, PHP, Go
references/paddle/best-practices.md - Production patterns
External: https://developer.paddle.com/llms.txt

Creem.io

references/creem/overview.md - MoR, auth, global support
references/creem/api.md - Products, checkout sessions
references/creem/checkouts.md - No-code links, storefronts
references/creem/subscriptions.md - Trials, seat-based
references/creem/licensing.md - Device activation
references/creem/webhooks.md - Signature verification
references/creem/sdk.md - Next.js, Better Auth
External: https://docs.creem.io/llms.txt

Multi-Provider

references/multi-provider-order-management-patterns.md - Unified orders, currency conversion

Scripts

scripts/sepay-webhook-verify.js - SePay webhook verification
scripts/polar-webhook-verify.js - Polar webhook verification
scripts/checkout-helper.js - Checkout session generator

Key Capabilities

Platform	Highlights
SePay	QR/bank/cards, 44+ VN banks, webhooks, 2 req/s
Polar	MoR, subscriptions, usage billing, benefits, 300 req/min
Stripe	CheckoutSessions, Billing, Connect, Payment Element
Paddle	MoR, overlay/inline checkout, Retain (churn prevention), tax
Creem.io	MoR, licensing, revenue splits, no-code checkout

Implementation

See references/implementation-workflows.md for step-by-step guides per platform.

General flow: auth → products → checkout → webhooks → events

Comments

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Details

Author: mrgoonie
Repository: mrgoonie/claudekit-skills
Category: Development
Installs: 350
GitHub stars: 2,230

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