Invalid config for basic trigger event

Configuration
1

I’m following the basic tutorial for a trigger event. I just added the following to my configuration.yaml and restarted HA.
The logs show an error message. What am I doing wrong? There is nothing beyond this in my configuration file.

automation:
  - alias: Home Assistant is starting
    trigger:
      platform: event
      event_type: homeassistant_start

Logs:
16-12-02 15:05:27 homeassistant.bootstrap: Invalid config for [automation]: required key not provided @ data[‘action’]. Got None. (See /home/hass/.homeassistant/configuration.yaml:57). Please check the docs at https://home-assistant.io/components/automation/

2

Please post YAML with preformatted text. Indentation is significant.

Is that your entire automation? You need an action:

3

The error in the log tells you exactly the problem, the required key action was not provided. Automations need a trigger and an action at the minimum. https://home-assistant.io/getting-started/automation/

4

Got it to work, but do feel that the documentation is a bit lacking.
It would be good if it was mentioned that action is a mandatory key for a trigger. Same goes for the Zwave configuration page. https://home-assistant.io/getting-started/z-wave/ Also note that most examples here don’t have the action key.

What I ended up doing was creating a logbook entry as per example configuration below. Unless there is another way to log an event in a standard way?
This

 - alias: Z-Wave network is ready
   trigger:
     platform: event
     event_type: zwave.network_ready
   action:
     service: logbook.log
     data:
       name: "Z-Wave network"
       message: "is ready"
5

There wouldn’t be any reason to use an automation without an action. That’s it’s entire reason for existing.