The SIBS MB WAY ID Purchase API provides a way for Merchants to implement the MB WAY Purchase Checkout with a phone number in their Online Stores. It validates and immediately holds the amount on the customer's card, starts a purchase between a merchant and a customer, refunds a customer of a previously made MB Way ID purchase and more. This API provides an interface to access MB WAY Product services that are designed on a REST model utilizing JSON structures. Examples are available for cURL, Ruby, Python, PHP, Java, NodeJS, Go and Swift. SIBS builds tools to define the future of the digital economy in Europe and beyond.