The SAP API Business Hub is a Web-based application, a one-stop shop for all SAP Solution API’s, and cloud integration content. On the SAP API business Hub, discover the integrations, and APIs you need for your SAP Cloud solution.
You can try out the APIs on SAP API Business Hub to see if they meet your requirements. You can quickly create prototype using APIs on SAP Business Hub depending on your user case and scenario. Refer below links as to how to use API HUB end point URL’s to create some UX extensions on SAP Cloud Platform.
The SAP API Business Hub provides you with some starter code in a variety of languages for each API. Click the Generate Code button at the top of the method definition.
Check out SuccessFactors APIs on SAP API Business HUB
Additional links for reference :-