Integrate payments with SePay (VietQR), Polar, Stripe, Paddle (MoR subscriptions), Creem.io (licensing). Checkout, webhooks, subscriptions, QR codes, multi-provider orders.
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Production-proven payment processing with SePay (Vietnamese banks), Polar (global SaaS), Stripe (global infrastructure), Paddle (MoR subscriptions), and Creem.io (MoR + licensing).
| 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 |
references/sepay/overview.md - Auth, supported banksreferences/sepay/api.md - Endpoints, transactionsreferences/sepay/webhooks.md - Setup, verificationreferences/sepay/sdk.md - Node.js, PHP, Laravelreferences/sepay/qr-codes.md - VietQR generationreferences/sepay/best-practices.md - Production patternsreferences/polar/overview.md - Auth, MoR conceptreferences/polar/products.md - Pricing modelsreferences/polar/checkouts.md - Checkout flowsreferences/polar/subscriptions.md - Lifecycle managementreferences/polar/webhooks.md - Event handlingreferences/polar/benefits.md - Automated deliveryreferences/polar/sdk.md - Multi-language SDKsreferences/polar/best-practices.md - Production patternsreferences/stripe/stripe-best-practices.md - Integration designreferences/stripe/stripe-sdks.md - Server SDKsreferences/stripe/stripe-js.md - Payment Elementreferences/stripe/stripe-cli.md - Local testingreferences/stripe/stripe-upgrade.md - Version upgradesreferences/paddle/overview.md - MoR, auth, entity IDsreferences/paddle/api.md - Products, prices, transactionsreferences/paddle/paddle-js.md - Checkout overlay/inlinereferences/paddle/subscriptions.md - Trials, upgrades, pausereferences/paddle/webhooks.md - SHA256 verificationreferences/paddle/sdk.md - Node, Python, PHP, Goreferences/paddle/best-practices.md - Production patternsreferences/creem/overview.md - MoR, auth, global supportreferences/creem/api.md - Products, checkout sessionsreferences/creem/checkouts.md - No-code links, storefrontsreferences/creem/subscriptions.md - Trials, seat-basedreferences/creem/licensing.md - Device activationreferences/creem/webhooks.md - Signature verificationreferences/creem/sdk.md - Next.js, Better Authreferences/multi-provider-order-management-patterns.md - Unified orders, currency conversionscripts/sepay-webhook-verify.js - SePay webhook verificationscripts/polar-webhook-verify.js - Polar webhook verificationscripts/checkout-helper.js - Checkout session generator| 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 |
See references/implementation-workflows.md for step-by-step guides per platform.
General flow: auth → products → checkout → webhooks → events
Create or update AgentSkills. Use when designing, structuring, or packaging skills with scripts, references, and assets.
Create or update AgentSkills. Use when designing, structuring, or packaging skills with scripts, references, and assets.
Set up and use 1Password CLI (op). Use when installing the CLI, enabling desktop app integration, signing in (single or multi-account), or reading/injecting/running secrets via op.
CLI to manage emails via IMAP/SMTP. Use `himalaya` to list, read, write, reply, forward, search, and organize emails from the terminal. Supports multiple accounts and message composition with MML (MIME Meta Language).
Create or update AgentSkills. Use when designing, structuring, or packaging skills with scripts, references, and assets.
Create or update AgentSkills. Use when designing, structuring, or packaging skills with scripts, references, and assets.
Set up and use 1Password CLI (op). Use when installing the CLI, enabling desktop app integration, signing in (single or multi-account), or reading/injecting/running secrets via op.
CLI to manage emails via IMAP/SMTP. Use `himalaya` to list, read, write, reply, forward, search, and organize emails from the terminal. Supports multiple accounts and message composition with MML (MIME Meta Language).