To add a script you’ll need to use the following command line options (with the values changed to match your requirements of course;) -config script.scripts.name="Remove Strict-Transport-Security" -config script.scripts.engine="Mozilla Zest" -config script.scripts.type=proxy -config script.scripts.enabled=true -config script.scripts.file="/home/user/scripts/Remove Strict-Transport-Security.zst" See also the FAQ: How do you find out what key to use to set a config value on the command line?