Have you heard about or noticed the difference when logging into vCenter 6.5 vs 6.0. There are quite a few new feature sets and items available to us within the vSphere 6.5 package. One of those of note is the new vSphere REST API explorer available with 6.5.
To access the explorer you can either go to the ip address of your venter and click on “Browse vSphere REST APIs” on the right hand side or go directly to the https://IPofvCenter/apiexplorer/
There will be more discussions on REST in general as well as using the vSphere REST API in the near future, so please do look forward to it.