Getting the USDRT Scenegraph API
Inside Kit
Starting with Kit 104, you can load the USDRT Scenegraph API extension in Kit from the Extension Manager.
Once it’s loaded, you can use the Python API directly in Kit, or from another extension that declares a dependency on the USDRT Scenegraph API extension.
Similarly, you can use the C++ API from a Kit extension by declaring an extension dependency to the USDRT Scenegraph API extension, and adding this path to the “includedirs” section of your premake file:
"%{target_deps}/usdrt/include"
The Kit extension manager will handle the plugin loading for you.
Outside Kit
There is no standalone release of USDRT publicly available at this time. Kit extensions are best way to leverage USDRT within Omniverse.