Thank you Pavel, I really appreciate the response. Changing the auth field from ‘x-api-key’ to ‘api-key’ in the header worked for me.
Apparently my endpoint was indeed configured to “application authentication”, as sending the api-key worked. Again, though, the current UI for configuring this stuff doesn’t even show me the Authentication section (as it does in the tutorial) – so I have no way of changing that setting, or even knowing what it is. Is that currently on a dev list?
Thanks again,
Greg