API Explorer provides a swagger-based interface using which you can explore the REST APIs for VMware Skyline Health Diagnostics. The API Explorer is hosted along with the user interface and can be accessed from the VMware Skyline Health Diagnostics user interface by navigating to Right Menu Options > API Explorer or using the direct link https://<appliance_ip_or_hostname>/api/apischema/swagger. You can download the JSON Schema using link https://<appliance_ip_or_hostname>/api/apischema

Though the API Explorer doesn't need any credentials to access, you will need a valid login credentials for the VMware Skyline Health Diagnostics to be able to use or try out the APIs.