Is this for writing tests against? Won't the tests fail if this service is not available? If you need a static response why not save it as a file and have a local temp server respond?
Though you could use this for automated tests, I request you to wait till I get a better server with higher availability. For automated integration tests there other great stub servers in different languages.
Sometimes (almost always) an app feature is developed parallel to the API service.
It's useful to return a mock response so you can build the entire feature including networking. This way you don't need to wait for the server side component to finish.
A temp server takes time to set up and maintain. It's like any tool. Why use Dropbox if you can just save your file to a usb drive and carry it around everywhere?