Questions on Data and Beamable Content

I haven't gotten far enough into actually integrating Inventory into a test client to fully understand this yet, but I have some data questions:

When authoring or editing Beamable content, a currency for example, can that be done entirely outside of Unity? Could I create a script and run it with the Unity CLI that would author and publish Beamable content?
When content is published an ID is associated with it. How is this ID used on the client when querying or manipulating values on that content?
If I wanted to combine our data with Beamable content I assume I would need knowledge of that ID to make that association. Is there a way during the publish flow to understand what the ID for a Beamable content is?