Applescript to make a keyboard shortcut to insert today's timestamp

Insert Current Date as YYYY-MM-DD.applescript

on run {input, parameters}
	set {year:y, month:m, day:d} to (current date)


	set mStr to (m as integer) as string
	if (m as number) < 10 then set mStr to "0" & mStr


	set dStr to (d as integer) as string
	if (d as number) < 10 then set dStr to "0" & dStr


	set customDateTime to y & "-" & mStr & "-" & dStr
	return customDateTime as string
end run

1. Open Automator on macOS
2. Create new Quick Action
3. Use the above code
4. [some more steps to creating a keyboard shortcut to run that Quick Action - need to look up again]