Can I add Atome to an existing API-only integration? How long will this process take? 02 September 2022 09:12 Updated Yes, Merchant can add Atome to the existing API-only integration. It will take you about a week or two depending on your existing infrastructure and resources. Related articles Managing Atome Merchant Center As a merchant, what’s in it for me? Which payment gateways/platforms are you able to integrate with? What is Atome's business model? My customer wants a refund, what should I do?