Ha Services

ha-services

Drive devices by calling services. Prerequisite: ../ha-shared/SKILL.md.

This is the workhorse for ALL device control. There are no per-domain commands (no hass-cli light ...); everything goes through service call against the service schema.

Discover

hass-cli service list                       # all domains/services
hass-cli service describe light.turn_on     # fields for one service

Call

# Simple key=value arguments (values are coerced to bool/number/json/string)
hass-cli service call light.turn_on --arguments entity_id=light.kitchen --arguments brightness_pct=60

# Full JSON payload (use for nested data / targets)
hass-cli service call climate.set_temperature --data '{"entity_id":"climate.living","temperature":21.5}'

# Target by area/device/entity
hass-cli service call light.turn_off --data '{"target":{"area_id":"kitchen"}}'

Patterns

• Find the right service first with service describe <domain.service> to learn required fields and selectors.
• entity_id, area_id, device_id, label_id are the standard targets.
• Toggle/turn_on/turn_off live under each domain and under homeassistant.* (generic). When unsure of the domain, homeassistant.turn_on often works.