Rats, I was afraid of that.
All I have on the SSO provider’s side is the ability to specify a webhook URL to call upon account creation. I’d have to build a ‘glue’ web site that received their webhook call, looked in their payload for the username it chose/created, and then made the Discourse API call with the one parameter being all that’s different.
Oh. That makes me wonder if I can make something like IFTTT do that…
…yeup. Looks like the IFTTT Platform service is exactly for this.
*tosses idea on huge pile of things to hire someone to do*