core/homeassistant/components/notify/services.yaml

# Describes the format for available notification services

notify:
  fields:
    message:
      required: true
      example: The garage door has been open for 10 minutes.
      selector:
        text:
    title:
      example: "Your Garage Door Friend"
      selector:
        text:
    target:
      example: platform specific
      selector:
        object:
    data:
      example: platform specific
      selector:
        object:

persistent_notification:
  fields:
    message:
      required: true
      example: The garage door has been open for 10 minutes.
      selector:
        text:
    title:
      example: "Your Garage Door Friend"
      selector:
        text:
    data:
      example: platform specific
      selector:
        object: