Get the Home Assistant version Returns: A string with the Home Assistant version (e.g., "2025.3.0")
Get the state of a Home Assistant entity with optional field filtering Args: entity_id: The entity ID to get (e.g. 'light....
Perform an action on a Home Assistant entity (on, off, toggle) Args: entity_id: The entity ID to control (e.g. 'light....
Get a list of Home Assistant entities with optional filtering Args: domain: Optional domain to filter by (e.g., 'light', 'switch', 'sensor') search_query: Optional search term to filter entities by name, id, or attributes (Note: Does not support wildcards. To get all entities, leave this empty) limit: Maximum number of entities to return (default: 100) fields: Optional list of specific fields to include in each entity detailed: If True, returns all entity fields without filtering Returns: A list of entity dictionaries with lean formatting by default Examples: domain="light" - get all lights search_query="kitchen", limit=20 - search entities domain="sensor", detailed=True - full sensor details Best Practices: - Use lean format (default) for most operations - Prefer domain filtering over no filtering - For domain overviews, use domain_summary_tool instead of list_entities - Only request detailed=True when necessary for full attribute inspection - To get all entity types/domains, use list_entities without a domain filter, then extract domains from entity_ids
Search for entities matching a query string Args: query: The search query to match against entity IDs, names, and attributes. (Note: Does not support wildcards. To get all entities, leave this blank or use list_entities tool) limit: Maximum number of results to return (default: 20) Returns: A dictionary containing search results and metadata: - count: Total number of matching entities found - results: List of matching entities with essential information - domains: Map of domains with counts (e.g. {"light": 3, "sensor": 2}) Examples: query="temperature" - find temperature entities query="living room", limit=10 - find living room entities query="", limit=500 - list all entity types
Get a summary of entities in a specific domain Args: domain: The domain to summarize (e.g., 'light', 'switch', 'sensor') example_limit: Maximum number of examples to include for each state Returns: A dictionary containing: - total_count: Number of entities in the domain - state_distribution: Count of entities in each state - examples: Sample entities for each state - common_attributes: Most frequently occurring attributes Examples: domain="light" - get light summary domain="climate", example_limit=5 - climate summary with more examples Best Practices: - Use this before retrieving all entities in a domain to understand what's available
Get a comprehensive overview of the entire Home Assistant system Returns: A dictionary containing: - total_entities: Total count of all entities - domains: Dictionary of domains with their entity counts and state distributions - domain_samples: Representative sample entities for each domain (2-3 per domain) - domain_attributes: Common attributes for each domain - area_distribution: Entities grouped by area (if available) Examples: Returns domain counts, sample entities, and common attributes Best Practices: - Use this as the first call when exploring an unfamiliar Home Assistant instance - Perfect for building context about the structure of the smart home - After getting an overview, use domain_summary_tool to dig deeper into specific domains
Get a list of all automations from Home Assistant This function retrieves all automations configured in Home Assistant, including their IDs, entity IDs, state, and display names. Returns: A list of automation dictionaries, each containing id, entity_id, state, and alias (friendly name) fields. Examples: Returns all automation objects with state and friendly names
Restart Home Assistant ⚠️ WARNING: Temporarily disrupts all Home Assistant operations Returns: Result of restart operation
Call any Home Assistant service (low-level API access) Args: domain: The domain of the service (e.g., 'light', 'switch', 'automation') service: The service to call (e....
Get the history of an entity's state changes Args: entity_id: The entity ID to get history for hours: Number of hours of history to retrieve (default: 24) Returns: A dictionary containing: - entity_id: The entity ID requested - states: List of state objects with timestamps - count: Number of state changes found - first_changed: Timestamp of earliest state change - last_changed: Timestamp of most recent state change Examples: entity_id="light.living_room" - get 24h history entity_id="sensor.temperature", hours=168 - get 7 day history Best Practices: - Keep hours reasonable (24-72) for token efficiency - Use for entities with discrete state changes rather than continuously changing sensors - Consider the state distribution rather than every individual state
Get the Home Assistant error log for troubleshooting Returns: A dictionary containing: - log_text: The full error log text - error_count: Number of ERROR entries found - warning_count: Number of WARNING entries found - integration_mentions: Map of integration names to mention counts - error: Error message if retrieval failed Examples: Returns errors, warnings count and integration mentions Best Practices: - Use this tool when troubleshooting specific Home Assistant errors - Look for patterns in repeated errors - Pay attention to timestamps to correlate errors with events - Focus on integrations with many mentions in the log
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