The SIBS Availability of Funds API enables users to verify, in real time, if your client has a certain amount of funds available. This API provides an interface to access PSD2 Availability of Funds services that are designed on a REST model utilizing JSON structures. It allows you to create a confirmation of funds request at the ASPSP. 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.