A new feature introduced in vSphere 6.5 is a new REST API, a more modern, simpler to use, and developer-friendly vSphere API. As compared to the capabilities provided by the vSphere API, at the time of writing, not all functions are supported by the REST API and the functionality is limited to vCSA management, Content Library and VM operations, and lifecycle. Embedded in the vCSA, there is an API Explorer that allows you to access the documentation of the new REST APIs.

Access your vCSA at the address https://<VCSA_IP>/apiexplorer to reach the API Explorer and click the Select API drop-down menu to select the available endpoints:

To get the complete documentation on a specific API (description, required fields, request body, and so on), click the Show/Hide option to expand the available sections.