How to create a database from remote within a batch file

I know argbatch would let me do that, but I think I need an admin agent locally on the host I want to run argbatch, which basically is not feasible for our circumstances.
When using Tamino Manager I connect to the HTTP port of the MILayer and can create the DB.
What’s the protocol (on top of HTTP) for that?
Is it open?
Is it supported for customer use?
What other options do I have?