Home Assistant Template FAQs

Question 1

What is Home Assistant Template and what is its primary purpose?

Accepted Answer

Home Assistant Template is an MCP (Model Context Protocol) server that exposes Jinja2 templates as callable tools for Home Assistant. Its primary purpose is to enable dynamic querying and retrieval of Home Assistant state information through custom-defined templates.

Question 2

How do I define and use templates with this tool?

Accepted Answer

You define templates in YAML files, each containing a `description` and a Jinja2 `template`. The server reads these, making them available as callable tools that can query Home Assistant for specific data, such as listing areas or mapping entities.

Question 3

How does Home Assistant Template integrate with other systems like LLMs?

Accepted Answer

It integrates via the Model Context Protocol (MCP), exposing templates as tools that can be called by LLM backends (e.g., LM Studio, Claude) or other applications. This allows LLMs to retrieve structured Home Assistant data on demand.

Question 4

What configuration options are available for the server?

Accepted Answer

The server can be configured via command-line arguments or environment variables for crucial settings like the template directory, Home Assistant API URL, and API key. It also supports different MCP transport mechanisms (stdio, SSE, streamable-http).

Home Assistant Template

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