List entities, optionally filtered by domain, with pagination and field selection.

Get full state and attributes of a single entity.

Turn on an entity. Optional: brightness (0-255), color_temp (mireds), rgb_color ([r,g,b]).

Turn off an entity.

Toggle an entity between on and off.

Set value of input_number, number, or climate temperature.

Select option for input_select or select entity.

Rename an entity in the entity registry.

Assign an entity to an area.

Disable an entity in the registry.

Re-enable a disabled entity.

Get raw entity registry (includes disabled, hidden entities).

Bulk turn_on/turn_off/toggle a list of entities.

Groups entities by domain and issues one service call per domain (e.g. all light.* get a single light.turn_on). action must be one of: "turn_on", "turn_off", "toggle". Returns dict mapping domain -> count of entities affected.

Bulk-write states using HA's set_state API.

Each item must contain entity_id and state, plus optional attributes dict. Returns a list of per-update result dicts ({entity_id, ok, error?}). Note: this writes to /api/states which only sets a virtual state — for real device control use bulk_control instead.

Expose or hide an entity to a voice assistant.

assistant must be one of: "conversation", "cloud.alexa", "cloud.google_assistant". Uses WS homeassistant/expose_entity.

Get exposure flags for an entity across all voice assistants.

List all entities exposed to a given voice assistant.

assistant must be one of: "conversation", "cloud.alexa", "cloud.google_assistant".

Expose/hide many entities across one or more voice assistants in one call.

assistants defaults to all three: conversation, cloud.alexa, cloud.google_assistant. Pass a subset to target specific ones. Uses WS homeassistant/expose_entity which natively accepts lists.

Call any Home Assistant service. E.g. domain='light', service='turn_on', data={'entity_id':'light.living_room','brightness':200}.

List all available services, optionally filtered by domain.

Fire a Home Assistant event.

Render a Jinja2 template string using HA template engine. Useful for testing templates before saving.

Reload configuration for a domain (automation, script, scene, input_boolean, etc.).

Press a button entity.

Set cover/blind/shutter position (0=closed, 100=open).

Set cover tilt position (0=closed, 100=open).

Set climate HVAC mode (heat, cool, auto, off, fan_only, dry).

Set light color, color temperature and/or brightness.

Toggle play/pause on a media player.

Seek media player to position (seconds).

Set media player volume (0.0 to 1.0).

Send a Home Assistant notification. target = notify service name (default: notify).

Take a still snapshot from a camera entity.

filename is a path inside the HA config dir, typically under /config/www/snapshots/... so it can be served by HA. The directory must exist and be allow-listed via allowlist_external_dirs.

Record a short clip from a camera entity to filename for duration seconds.

filename is a path inside the HA config dir (e.g. /config/www/snapshots/clip.mp4).

Create or replace a persistent notification in the HA UI.

Provide notification_id to allow the notification to be dismissed/updated later via notify_persistent_dismiss.

Dismiss a persistent notification by its notification_id.

Dismiss all persistent notifications.

List all automations with their current state.

Manually trigger an automation.

Enable a disabled automation.

Disable an automation.

Reload all automations from YAML.

List all scripts.

Run a script, optionally with variables.

Reload all scripts from YAML.

List all scenes.

Activate a scene.

Reload scenes from YAML.

Get a scene's config dict (entities + their target states). Accepts bare id or 'scene.'. Returns None if not found.

Create or overwrite a scene config. Auto-reloads scenes.

entities format — keys are entity_ids, values are the target state dict: { "light.living_room": {"state": "on", "brightness": 76}, "cover.roleta": {"state": "closed", "position": 0}, "switch.fan": {"state": "off"} }

brightness range is 0-255 (30% ≈ 76, 50% ≈ 128, 100% = 255).

Delete a scene config. Requires confirm=True. Auto-reloads scenes.

Get an automation's YAML config as a dict. Accepts bare id or 'automation.'. Returns None if not found.

Create or overwrite an automation YAML config (alias, trigger, action, condition, ...). Auto-reloads automations.

Delete an automation by id. Auto-reloads automations afterwards. Set confirm=True to proceed.

Get a script's YAML config as a dict. Accepts bare id or 'script.'. Returns None if not found.

Create or overwrite a script YAML config (sequence, fields, ...). Auto-reloads scripts.

Delete a script by id. Auto-reloads scripts afterwards. Set confirm=True to proceed.

List trace summaries (recent runs) for an automation. Accepts bare id or 'automation.'.

Get a full automation trace (steps, timing, condition results) for a specific run.

List trace summaries (recent runs) for a script. Accepts bare id or 'script.'.

Get a full script trace (steps, timing, action results) for a specific run.

Shortcut: fetch the most recent trace for an automation in one call.

Use failed_only=True to grab the latest run that didn't finish cleanly — handy for debugging "why didn't this fire?".

Shortcut: fetch the most recent (or most recent failed) trace for a script.

Validate automation YAML against HA best practices (static linter).

Accepts a single automation dict or a list of automation dicts.

Checks:

• state trigger without 'for:' (bounce risk)

• missing 'mode:' declaration

• multiple triggers without 'id:' fields

• missing 'alias:' / 'id:'

• deprecated 'service:' key in actions (use 'action:' in HA 2024.8+)

• 'restart' mode caution

• missing 'description:'

Returns: {valid_yaml, automations_checked, issues_total, warnings, infos, issues[], summary} Each issue: {automation, rule, severity, message} severity: 'warning' = should fix, 'info' = good to know.

Cross-check entity IDs and services used in automation YAML against the live HA registry.

Unlike validate_best_practices (static), this tool calls Home Assistant to verify that every referenced entity_id exists and every service is registered. Template values ({{ ... }}) are skipped — they can't be resolved statically.

Returns: { valid_yaml, entities_checked, services_checked, missing_entities[], missing_services[], template_refs_skipped, summary }

List all Home Assistant entity groups (group.* entities).

Returns groups with their members, icon, and current state.

Create or update a Home Assistant entity group.

Wraps the group.set service. Group is stored in groups.yaml and persists restarts.

Remove a Home Assistant entity group. Set confirm=True to proceed.

List all areas (rooms) in Home Assistant.

Create a new area.

Delete an area by its area_id.

List all floors.

List all devices in the device registry.

Get all entities belonging to an area.

Get current states of all entities in an area.

Turn on/off/toggle all entities of a domain in an area. action: 'turn_on' | 'turn_off' | 'toggle'

Get state history for an entity over the last N hours.

Get logbook entries, optionally filtered by entity_id.

Fetch the Home Assistant error log.

Get Home Assistant system/version info.

Get current Home Assistant configuration (location, units, version, components).

List all helper entities (input_boolean, input_number, input_select, counter, timer…).

Set input_boolean to true or false.

Set an input_number value.

Set an input_text value.

Set an input_select to a specific option.

Set input_datetime. Provide date (YYYY-MM-DD), time (HH:MM:SS) or datetime (YYYY-MM-DD HH:MM:SS).

Increment a counter helper.

Reset a counter helper to 0.

Start a timer. duration format: HH:MM:SS or number of seconds.

Cancel a running timer.

Reload all helper entities from configuration.

Validate Home Assistant configuration before restart.

Restart Home Assistant. WARNING: causes ~30s downtime.

Set confirm=True to proceed; without it returns a safety prompt.

Stop Home Assistant. WARNING: requires manual restart.

Set confirm=True to proceed; without it returns a safety prompt.

Reload core configuration (automations, scripts, scenes, groups, etc.).

Create a full Home Assistant backup.

List all loaded integrations (config entries).

Reload a specific integration config entry.

Check if Home Assistant is reachable.