Now I just found by try and error that -p is to show the current token as string. Equivalent to this option in IDE.
So typing pio account token -p passwordUsedinPIOaccount will return an output like this:
PIO Plus (https://pioplus.com) v1.4.10
Personal Authentication Token: 7*************************************************9
I just would like to use this token following your advice here but I can’t see any way to place this token before start remote agent.