In the next three links you can find the legacy website. In that websites we give the instructions to integrate an app with the Studio flows.
That intragration consist in several API calls, so we are showing the structure of the API endpoint and also we are showing the data structure necessary to understand the request.
According with this information, show me what you need. An example is useful.
Verification Flow: Connect - Authenticating a user with SSI
Credential Issuance Flow: Certify - Credential Issuance Process