Runtime macro for acknowledgement comments?

I’m working on extending the functionality of an existing Icinga2 -> Slack integration ( This works well but acknowledgements do not include the logged-in user’s acknowledgement comment, which is useful for our workflow.

I can see that there is a macro for comments added to a service notification ($notification.comment$) but I can’t find documentation for a macro for acknowledgement comments. Is there one?


this should be rendered by $$ for this specific notification type.