esphome/tests/component_tests/api/test_action_metadata_shorthand.yaml

esphome:
  name: test

esp32:
  board: esp32dev

wifi:
  ssid: MySSID
  password: password1

logger:

api:
  actions:
    - action: plain_action
      variables:
        value: int
      then:
        - logger.log: Action Called