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Atome is a buy now, pay later service in Southeast Asia. Customers split the purchase into instalments in Atome, and you receive the full amount. Payrails processes Atome through Adyen as the payment service provider (PSP). Open the Adyen guide below for its setup steps and request examples.

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How a Atome payment works

Atome is a redirect payment method:
  1. The customer selects Atome at checkout.
  2. Payrails returns a redirect URL from the PSP, and the customer goes to Atome.
  3. The customer logs in and approves the payment plan.
  4. Atome sends the customer back to your returnInfo URL.
  5. Payrails receives the final result from the PSP and updates the payment.
Each payment is single-use: the customer confirms every payment on its own. Payrails captures Atome payments immediately, so a successful payment is final. To return funds, refund the payment.

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Supported currencies and countries

Atome supports SGD (Singapore dollar) as its only presentment currency.

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Integrate Atome

The Adyen guide covers the PSP-side setup, the Payrails configuration, and the request fields Adyen requires.

Adyen

Atome via Adyen

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Check PSPs

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Ways to integrate Atome

  • Payrails SDK: the Web SDK shows Atome when your workflow returns it as a payment option, and redirects the customer to Atome. To control how the redirect opens, listen for the actionRequired event.
  • Payrails API: call lookup payment options, then authorize with atome as the paymentMethodCode. The Adyen guide lists the fields Adyen requires.
In both cases, confirm the final result through webhook notifications or the execution status. Don’t treat the customer’s return to your success URL as proof of payment.
Last modified on October 15, 2026