What adjective can we use to qualify something that has no (visual) Graphic User Interface?
For example, a bot, a script, a command line tool, ...
I am thinking of "headless", taken from "Chrome headless" running Google Chrome in script without graphic user interface. But I am not sure if I can use that for anything else than Chrome. Can I say, I made a "headless bot"? Also, the term is not intuitive for someone who does not know about Chrome headless.
I hope there is a better for "without GUI"