core/homeassistant/components/eight_sleep/services.yaml

heat_set:
  description: Set heating/cooling level for eight sleep.
  fields:
    duration: {description: Duration to heat/cool at the target level in seconds., example: 3600}
    entity_id: {description: Entity id of the bed state to adjust., example: sensor.eight_left_bed_state}
    target: {description: Target cooling/heating level from -100 to 100., example: 35}