Scripted addition of servers?

Elsewhere [1], I mentioned that I have pgAdmin running in server mode behind nginx and gunicorn in an embedded role, to provide admin access to a pre-determined set of servers.

As part of that, the initial user is pre-configured programmatically like this:

    PGADMIN_SETUP_EMAIL=$SUPERUSER PGADMIN_SETUP_PASSWORD=$PW python3 .../setup.py

Is it possible to programatically set up servers? At a minimum, I'd guess I'd need to specify the server name, the username and password for each server.

Thanks, Shaheed