ACI Worldwide

ACI Open Payment Platform — Server-to-Server API

The core RESTful payment API of the ACI Open Payment Platform (PAY.ON gateway). Server-to-Server integration lets merchants and PSPs run end-to-end payment workflows — preauthorization, debit, capture, refund, and reversal — across cards and alternative payment methods. Requests are authenticated with an Authorization Bearer access token plus a channel entityId. Production host is https://eu-prod.oppwa.com and test host is https://eu-test.oppwa.com.

GitHub

Documentation

📖
Documentation
https://docs.aciworldwide.com/integrations/server-to-server
📖
APIReference
https://docs.aciworldwide.com/reference/parameters
📖
GettingStarted
https://docs.aciworldwide.com/integrations/widget

Other Resources

🔗
APIsJSON
https://raw.githubusercontent.com/api-evangelist/aci-worldwide/refs/heads/main/apis.yml

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API entry from apis.yml

apis.yml Raw ↑ 
aid: aci-worldwide:open-payment-platform-server-to-server
name: ACI Open Payment Platform — Server-to-Server API
description: The core RESTful payment API of the ACI Open Payment Platform (PAY.ON gateway). Server-to-Server
  integration lets merchants and PSPs run end-to-end payment workflows — preauthorization, debit, capture,
  refund, and reversal — across cards and alternative payment methods. Requests are authenticated with
  an Authorization Bearer access token plus a channel entityId. Production host is https://eu-prod.oppwa.com
  and test host is https://eu-test.oppwa.com.
humanURL: https://docs.aciworldwide.com/integrations/server-to-server
baseURL: https://eu-prod.oppwa.com
tags:
- Payments
- Server-to-Server
- Card Payments
- REST
tags_raw:
- Payments
- Server to Server
- Card Payments
- REST
properties:
- type: Documentation
  url: https://docs.aciworldwide.com/integrations/server-to-server
- type: APIReference
  url: https://docs.aciworldwide.com/reference/parameters
- type: GettingStarted
  url: https://docs.aciworldwide.com/integrations/widget