# Hydrogenpay Developer Portal Documentation

> Welcome to the Hydrogenpay Developer Portal. We provide industry-leading payment APIs. This section will guide you through the process of getting started with our API.

## Guides
- [Getting Started](https://docs.hydrogenpay.com/docs/getting-started.md): Thank you for choosing Hydrogen! Our API makes it easy to integrate with our products and start building your own financial applications.
- [Enviroments](https://docs.hydrogenpay.com/docs/enviroments.md): Environments for Hydrogen API
- [Go-Live Checklist](https://docs.hydrogenpay.com/docs/go-live-checklist.md): Hydrogen API Integration Checklist
- [Glossary](https://docs.hydrogenpay.com/docs/glossary.md)

## API Reference
- [Authentication](https://docs.hydrogenpay.com/reference/api-authentication.md)
- [Payment Gateway](https://docs.hydrogenpay.com/reference/payment-gateway.md)
- [Single Payment](https://docs.hydrogenpay.com/reference/single-payment.md)
- [Recurring Payment](https://docs.hydrogenpay.com/reference/recurring-payment.md)
- [Subsequent Payments](https://docs.hydrogenpay.com/reference/subsequent-payments.md)
- [Cancel Recurring](https://docs.hydrogenpay.com/reference/cancel-recurring.md)
- [Inline Checkout](https://docs.hydrogenpay.com/reference/popup-checkout.md)
- [Initiate Transfer](https://docs.hydrogenpay.com/reference/initiate-transfer.md)
- [Simulate Bank Transfer](https://docs.hydrogenpay.com/reference/simulate-transfer.md)
- [Test Cards & Wallet](https://docs.hydrogenpay.com/reference/test-cards.md)
- [Payment Confirmation](https://docs.hydrogenpay.com/reference/payment-confirmation.md)
- [Payment Gateway Webhook](https://docs.hydrogenpay.com/reference/payment-gateway-webhook.md)
- [Plugins & SDKs](https://docs.hydrogenpay.com/reference/plugins-sdks.md)
- [Server-to-Server Integration](https://docs.hydrogenpay.com/reference/server-to-server-integration.md)
- [Card Encryption](https://docs.hydrogenpay.com/reference/card-encryption.md)
- [Instant Pay](https://docs.hydrogenpay.com/reference/instant-pay.md): This is a documentation for Hydrogen Instant Pay APIs.
- [Create Virtual Account](https://docs.hydrogenpay.com/reference/create-virtual-account.md)
- [Virtual Account ID](https://docs.hydrogenpay.com/reference/virtual-account-id.md)
- [Get Virtual Account](https://docs.hydrogenpay.com/reference/get-virtual-accounts.md)
- [Instant Pay Webhook](https://docs.hydrogenpay.com/reference/instant-pay-webhook.md)
- [Transaction Validation](https://docs.hydrogenpay.com/reference/transaction-validation.md)