Get current authenticated user via REST api?

I’m trying to find a way to get the current user who is authenticated via the REST api in javascript.
Basically, I want to have a small banner at the top of a webpage that indicates which user is logged in. Like the classic, “You are logged in as Jase. Not you?”

I can’t find anything in the REST api documentation about this and I’m wondering if anyone knows a way to get that info?

Thanks!

Hi Jase,

I don’t know myself, I’ve asked some experts their thoughts on this should get back to you soon.

For now, I’m adjusting my script so that it saves the username when logging in so I can use it later to look up the active user but I’d love a way to just get it from the API.