I found some documentation that I can create posts as a user other than “system” as long as the api key used is set for “all users”.
i am testing this in postman and finding some issues. i can only do this with an admin user or “system”. queries with regular users in api-username header are returning 403 forbidden.
is this the case? do only admin users work in the api-username?
As long as the username you have set for the Api-Username belongs to an existing user that has permission to create a post in the category you are posting to, you can use the username as the Api-Username along with an All Users API key.