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Accept Scalapay payments with Adyen as the payment service provider (PSP).

Supported workflows

Before you begin

Complete these steps before you send your first Scalapay payment through Adyen:
  1. Set up an Adyen integration in your workspace. Follow the Adyen integration setup guide if you don’t have one yet.
  2. Ask Adyen to enable Scalapay on your Adyen merchant account.
  3. In the Payrails Portal, go to Settings → Integrations, open your Adyen integration, select Scalapay under Payment methods, and save.
  4. Add Scalapay as a payment option in your workflow.

Request fields for Adyen

Send these fields in the authorize request, in addition to the standard authorize fields. Required fields must be present for the payment to succeed. Payrails sends Optional fields to the PSP when you include them.

Authorize a Scalapay payment

Call authorize a payment with scalapay as the paymentMethodCode. The response includes the redirect to Scalapay.
Authorize request
After the customer approves the plan, Scalapay returns them to your success or error URL. Confirm the result through webhook notifications or the execution status before you fulfill the order.

How Adyen handles Scalapay

  • Adyen confirms the authorization by webhook. Scalapay isn’t captured automatically: with delayed capture, the payment stays authorized until you capture it or cancel it.
  • Partial captures, and several captures against one authorization, work only when Adyen enables multiple partial captures on your merchant account.
  • When you refund a payment you captured separately, Payrails tells Adyen which capture the refund belongs to.
  • Scalapay supports customer-initiated payments only. Payrails rejects the CardOnFile, MOTO, Subscription and Unscheduled processing types for Scalapay, and doesn’t save the instrument even when you set storeInstrument.
Last modified on October 5, 2026