Understood, but there won’t be a result for that computer until the endpoint receives the action, parses it, and sends a result back to the root server. Until then you would see
"<not reported>" for the computer in the Console, and from the REST API there would be not be a result entry for the computer at all.
"<Not Reported>" shown in the console is not an Action Result, but rather a lack of one. The console would run a couple of queries - one to find the computers targeted by the action, a second to find the results for each computer, and present
"<not reported>" for a computer that was targeted but hasn’t reported. You could do the same through the API, but it takes more than one query to do it.