Here are two simple automation examples of what you can do with the data that HACS provides:

New repositories added

If you click the link here you will get to the page in HACS for that repository.

automation hacs_new_repo:

- alias: Create a notification when somethig is added to HACS

trigger:

platform: event

event_type: hacs/repository

event_data:

action: registration

condition:

condition: template

value_template: "{{ trigger.event.data.repository is defined }}"

action:

service: persistent_notification.create

data_template:

title: New repository in HACS

message: >-

{% set repo = trigger.event.data.repository %}

{% set id = trigger.event.data.repository_id %}

[{{ repo }}](/hacs/repository/{{ id }})

was just added to HACS.

Updates pending

automation hacs_updates:

- alias: Create a notification when there is updates pending in HACS

trigger:

platform: state

entity_id: sensor.hacs

condition:

- condition: template

value_template: "{{ states(trigger.entity_id) != 'unknown'}}"

- condition: template

value_template: "{{ (states(trigger.entity_id) | float) != 0}}"

action:

service: persistent_notification.create

data_template:

title: Updates pending in HACS

message: >-

{% for repo in state_attr(trigger.entity_id, 'repositories') %}

**{{ repo.display_name }}** _{{ repo["installed version"] }}_ -> _{{ repo["available version"] }}_

{% endfor %}