Can I add Atome to an existing API-only integration? How long will this process take? 02 October 2021 14:04 Updated Yes, you can add Atome to your existing API-only integration. It will take you about a week or two depending on your existing infrastructure and resources. Related articles How do you decide the transaction limit for each merchant? Which payment gateways/platforms are you able to integrate with? How much will it cost me as a merchant? How can I sign up? Do you save customers’ credit/debit card data?