sxcu.api comes with a cli tool that allows you to interact with the api from the command line. If you are interested, please see bellow for details on how to install. There is also more information available on the website sxcu.api.lovelyjacob.com if needed.
npm i -g sxcu.apiIf you're testing with the repo, please do: bash build.bash link instead. Then you can run npx sxcu
sxcu helpsxcu help --command uploadsxcu upload --path image.png