Trying to setup test oauth app but don't have any domains

Hi, I’m trying to setup a test oauth app in Zoom just for testing, but don’t have any domain to work with, and hence is unable to validate the domain. I don’t need to publish the app to the marketplace, but it seems like I have to do so in order to enable oauth login from my test website (localhost). Is there something I can do to workaround this? Thanks in advance.