Is there a way to manually kick off a policy check? I'm trying to test automations in more real-time

Not as of today, but it's something we are looking to add.

The current easiest way to test a policy automation is to do a manual refetch on a test host that's for sure failing a policy; and set a low webhook interval. (Manual refetch of a host will trigger a policy check.)

great, thanks! I'll give this a try tomorrow.