The Problem is, that the Gui is not showing all of them. So you can’t see which variables you can access, when building a new notification plugin. A simple Workaround is to build a first test. Just create a new plugin, as you would do. Make sure it’s in Python and Executable. Place it in: ~/local/share/check_mk/notifications/ Then you put this code inside:

#!/usr/bin/env python3
# BK: Test full Context
import pprint

from cmk.notification_plugins import utils
pprint.pprint(utils.collect_context())

You will find now a new notification Method „BK: Test full Context“, when you create a new Notification Rule. If it’s not there, run omd restart apach first. Create your rule, trigger a notification and check the log in ~/var/log/notify.log

There you see now the full context.