Foreman as Inventory DB?

Hello! I would like to use foreman, but have an immediate need to be able
to assess the state of my environment, e.g. what server are running which
OS version, etc. I think I can find out this information using foreman,
however only 1/2 of my estate is using puppet, and I would also like to be
able to track this unmanaged portion of servers.

I can ssh out to these hosts and run facter on them . . . does anyone know
if it's possible to stuff this information into foreman?

Thanks a lot,