# ZEN API documentation

## Docs
- About ZEN [First steps with ZEN](https://docs.zen.com/payments/api-integration/first-steps.md): 
- About ZEN [Who we are](https://docs.zen.com/payments/api-integration/who-we-are.md): 
- About ZEN [What we provide](https://docs.zen.com/payments/api-integration/what-we-provide.md): 
- About ZEN [How we provide](https://docs.zen.com/payments/api-integration/how-we-provide.md): 
- Introduction [Definitions](https://docs.zen.com/payments/api-integration/definitions.md): 
- Introduction [About API integration](https://docs.zen.com/payments/api-integration/about-api.md): 
- Introduction [Revenue strams](https://docs.zen.com/payments/api-integration/revenue-streams.md): 
- Introduction [Environments](https://docs.zen.com/payments/api-integration/environments.md): 
- Introduction [Authorization & Authentication](https://docs.zen.com/payments/api-integration/authorization-authentication.md): 
- Introduction [Payment methods](https://docs.zen.com/payments/api-integration/payment-methods.md): 
- Introduction [Payment process](https://docs.zen.com/payments/api-integration/payment-process.md): 
- Introduction [Currencies](https://docs.zen.com/payments/api-integration/currencies.md): 
- Introduction [Languages](https://docs.zen.com/payments/api-integration/languages.md): 
- Account registration & configuration [Before you begin](https://docs.zen.com/payments/api-integration/before-begin.md): 
- Account registration & configuration [Registration](https://docs.zen.com/payments/api-integration/registration.md): 
- Account registration & configuration [Configuration](https://docs.zen.com/payments/api-integration/configuration.md): 
- Account registration & configuration [Merchant's panel](https://docs.zen.com/payments/api-integration/merchant-panel.md): 
- Account registration & configuration [Payments setup](https://docs.zen.com/payments/api-integration/payments-setup.md): 
- Account registration & configuration [Locating Transactions in my.zen.com](https://docs.zen.com/payments/api-integration/locating-transactions.md): 
- Account registration & configuration [Finding settlements](https://docs.zen.com/payments/api-integration/finding-settlements.md): 
- Features [Available features](https://docs.zen.com/payments/api-integration/features.md): 
- Features [3-Domain Secure (3DS)](https://docs.zen.com/payments/api-integration/3ds.md): 
- Features [Account Funding Transactions (AFT)](https://docs.zen.com/payments/api-integration/doc-870821.md): 
- Features [Address Verification Service](https://docs.zen.com/payments/api-integration/avs.md): 
- Features [Authorization fee](https://docs.zen.com/payments/api-integration/authorization-fee.md): 
- Features [Card widget](https://docs.zen.com/payments/api-integration/card-widget.md): 
- Features [Cashback](https://docs.zen.com/payments/api-integration/cashback.md): 
- Features [Currency Conversion Service](https://docs.zen.com/payments/api-integration/currency-conversion.md): 
- Features [Fraud collector (fingerPrintId)](https://docs.zen.com/payments/api-integration/fraud-collector.md): 
- Features [Instant Payment Notification (IPN)](https://docs.zen.com/payments/api-integration/ipn.md): 
- Features [Payment Link](https://docs.zen.com/payments/api-integration/payment-link.md): 
- Features [Shop logo on ZEN.COM checkout](https://docs.zen.com/payments/api-integration/shop-logo.md): 
- Features [Reports](https://docs.zen.com/payments/api-integration/reports.md): 
- Integration [Response codes](https://docs.zen.com/payments/api-integration/response-codes.md): 
- Integration [Error codes](https://docs.zen.com/payments/api-integration/error-codes.md): 
- Integration [Prepare the communication](https://docs.zen.com/payments/api-integration/communication-preparing.md): 
- Integration [Available Payment methods](https://docs.zen.com/payments/api-integration/available-payment-methods.md): 
- Integration [Purchase Transaction](https://docs.zen.com/payments/api-integration/purchase-transaction.md): 
- Integration [Refund Transaction](https://docs.zen.com/payments/api-integration/refund-transaction.md): 
- Integration [Payout Transaction](https://docs.zen.com/payments/api-integration/payout-transaction.md): 
- Integration [Transaction status check](https://docs.zen.com/payments/api-integration/transaction-status.md): 
- Integration [Saving and tokenizing cards](https://docs.zen.com/payments/api-integration/tokenizing-cards.md): 
- Integration [One-click card Payments](https://docs.zen.com/payments/api-integration/one-click-cards.md): 
- Integration [One-click Google Pay Payments](https://docs.zen.com/payments/api-integration/google-pay.md): 
- Integration [One-click Apple Pay Payments](https://docs.zen.com/payments/api-integration/apple-pay.md): 
- Integration [Customers and cards management](https://docs.zen.com/payments/api-integration/customers-management.md):