Wonderfull, thanks, this was the life saver.
One thing to note, using “_do_confirm_service_downtime=yes” for the service,
“&_do_confirm=yes” seems not to be needed.
It finally worked like this:
curl -k "https://some.url.net/some_site/check_mk/view.py?
_username=USER
&_secret=PASSWORD
&filled_in=actions
&actions=yes
&_transid=-1
&_do_confirm_service_downtime=yes
&_do_actions=yes
&view_name=service
&host=server01
&_down_from_now=yes
&_down_minutes=1
&_down_comment=In_Downtime
&service=Check_MK"
Could there be any side effect leaving the “&_do_confirm=yes” option?