To start a payment, your system sends a signed, URL-encoded form post to Pay Pages containing the transaction details, merchant reference, return URL, and webhook URL. Pay Pages then routes the customer to the correct payment provider and handles the provider-specific mapping on your behalf.

Once the customer completes the payment, they are posted back to your return URL and the final transaction status is also sent server-to-server to your webhook endpoint. The guide below covers the request fields, signature generation and validation, test card details, and the related refund and query flows.