git blame suggests it was from dwiel, who has this in their repo

https://github.com/dwiel/knausj_talon/blob/f2263040a71f711b43d0949311c959fe68a7dd7b/code/media.py#L9

Is mac only though

Should we bring that over, for Mac? I think that's the best way to set it, if there's not a Talon API

Ya seems reasonable, not sure about windows, but on linux there is a similar pulse audio command which hopefully would work on most distros.

It looks like we can also read and set the mute status directly (rather than just sending the keyboard button to toggle it). Although since this won't show the OSD indicator, we probably don't want to use it by default.

$ osascript -e "get volume settings"
output volume:44, input volume:75, alert volume:34, output muted:false
$ osascript -e "set volume output muted true"
$ osascript -e "set volume output muted false"