I would like to create an post from my Admin API Key under a different username. The official API documentation under Discourse API Docs has no real field for that. Is it still possible somehow?
If you have an “all users” API key then you can set the username it should act as in the
See the section “Authentication” on the API docs home page: https://docs.discourse.org/
If your ab Admin vs just a Moderator you can use “Change Ownership” from the wrench on the post.
Iirc there is a plugin as well to post under a different name.
Here it is