mandrake0
It look like you need some python to create a exporter. You can export geometry files in houdini but no scene file.
Check out https://github.com/dkoerner/houio/tree/master/scene_exporter [github.com]. This python script exports the current scene in houdini to a json description file. Exported are cameras, objects (not including sops), lights and some animated parameters. It is very rudimentary and does not support materials etc. But it might be a good starting point for writing your own exporter.