Schema | ha-mcp

ha-mcp

Describes the environment variables required to run the server.

Name	Required	Description	Default
`HASS_URL`	No	Base URL of your Home Assistant instance	http://localhost:8123
`HASS_TOKEN`	Yes	A long-lived access token

Features and capabilities supported by this server

Capability	Details
`tools`	{ "listChanged": true }

Functions exposed to the LLM to take actions

Name	Description
ha_get_statesA	List Home Assistant entity states. Optionally filter by domain (e.g. 'light', 'sensor') and/or area (room name or area_id).
ha_get_entityB	Get the full state and attributes of one entity by entity_id (e.g. 'light.kitchen_lights').
ha_call_serviceB	Call any Home Assistant service. Examples: light.turn_on, climate.set_temperature, automation.trigger, scene.turn_on, media_player.play_media. Pass extra params (brightness, temperature, etc.) in `data`.
ha_get_historyA	Get state-change history for an entity over the last N hours (default 24).
ha_render_templateB	Render a Home Assistant Jinja2 template and return the result. Example: "{{ states('sensor.outside_temperature') }}".
ha_get_configA	Get Home Assistant configuration: version, location, unit system, time zone, loaded components.
ha_get_error_logA	Get the Home Assistant error log (plain text) for troubleshooting.
ha_list_areasA	List all areas/rooms defined in Home Assistant.
ha_get_entities_by_areaA	List the entity_ids in a given area/room (by name or area_id), resolving device→area inheritance.

Interactive templates invoked by user choice

Name	Description
No prompts

Contextual data attached and managed by the client

Name	Description
No resources

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