That is the correct response yes.
204 is the HTTP Code for “created” and there is no return information so the body is blank.
Some API’s return a 204 and some information about the created item, but the item created cannot be loaded via the API in this example.
Sounds good to me. I’ve not fully read the Overwolf docs, so it might be possible to make the extension connect to the Overwolf pubsub which saves a relay via EBS, but the EBS can do more useful stuff like event filtering etc…