I issued a command with action=disable_alerts host=webserver services=all set and get this results:
"nagios_commands": [
"[1438593631] DISABLE_SVC_NOTIFICATIONS;webserver;a",
"[1438593631] DISABLE_SVC_NOTIFICATIONS;webserver;l",
"[1438593631] DISABLE_SVC_NOTIFICATIONS;webserver;l"
]
This is not a big deal because i have just overlooked the action=silence command. Nevertheless a more predictable result would be a nice thing to have.