Can I add Atome to an existing API-only integration? How long will this process take? 14 July 2022 10:33 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 Which payment gateways/platforms are you able to integrate with? How much do I have to spend to use Atome? Do you save customers’ credit card/ debit card/ online banking account data? How do you decide the transaction limit for each merchant? How do I use Atome if I’m a merchant?