Home Assistant Service Actions

Service calls (now called "actions" in the UI) are the primary mechanism for controlling devices. Register them in async_setup, not async_setup_entry.

Python Service Calls

await hass.services.async_call(
    domain="light",
    service="turn_on",
    service_data={"brightness_pct": 80, "color_temp_kelvin": 3000},
    target={"entity_id": "light.living_room"},
    blocking=True,  # Wait for completion
)

Targeting