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diverdown1964

Home Assistant MCP Server

Server Configuration

Describes the environment variables required to run the server.

NameRequiredDescriptionDefault
HASS_HOSTYesYour Home Assistant URL (e.g., https://your-instance.ui.nabu.casa)
HASS_TOKENYesYour Home Assistant long-lived access token

Tools

Functions exposed to the LLM to take actions

NameDescription
list_entities

List all Home Assistant entities (lights, switches, sensors, etc.)

get_entity_state

Get the current state and attributes of a specific entity

call_service

Call a Home Assistant service (e.g., turn on a light, set climate)

list_services

List all available Home Assistant services

Prompts

Interactive templates invoked by user choice

NameDescription

No prompts

Resources

Contextual data attached and managed by the client

NameDescription

No resources

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