Automation using HA calendar if no event as criteria

[armedad]

avoid device id’s:

Why and how to avoid device_ids in automations and scripts

Background When you start writing automations, a device trigger seems the obvious choice. Everybody knows what a device is and it comes at the top of the UI dropdown list. [image] It works… but it is certainly not a “great way to start” because it is storing up problems for the future. Far better to use an entity, with state or numeric_state. Device_id problems The yaml will be longer and harder to follow, which may make maintenance difficult, especially a few months down the line when y…

this has an example on how to use get_events… you can do it via the ui. you don’t need to write yaml to call the get_event.

then to see how many events are returned you’d have someting like
`{{ agenda[‘name_of_your_calendar’.events | count() }}

but build your automation as far as you can then post it here and we’ll help.