# Home Assistant: Hermes Agent plugin

> Home Assistant gateway platform (state-change events in, persistent notifications and cron notify delivery out) plus the homeassistant toolset (ha_list_entities, ha_get_state, ha_list_services, ha_call_service).

Canonical: https://hermeswatcher.com/plugins/homeassistant  
Tier: Official  
Official page (Nous Research): https://hermes-agent.nousresearch.com/docs/plugins/homeassistant  
Last updated in catalog: 2026-10-20

Home Assistant gateway platform (state-change events in, persistent notifications and cron notify delivery out) plus the homeassistant toolset (ha_list_entities, ha_get_state, ha_list_services, ha_call_service). Formerly built into Hermes core; existing users are migrated automatically.

## How to install

1. Install it. Hermes asks for any API keys it needs (this one needs `HASS_TOKEN`), then asks whether to turn it on.

```bash
hermes plugins install homeassistant
```

2. Said no? Turn it on later:

```bash
hermes plugins enable homeassistant
```

3. Restart Hermes so it loads the plugin.

Some plugins also need a sign-in or settings: see the official page. Memory plugins ask whether to become your memory provider instead. Steps follow the official plugins guide: https://hermes-agent.nousresearch.com/docs/user-guide/features/plugins

## Facts

- Category: Everyday life & fun, Chat apps & voice
- Maintained by: NousResearch (Official)
- Needs: `HASS_TOKEN` (API key)
- Adds tools: `ha_list_entities`, `ha_get_state`, `ha_list_services`, `ha_call_service`
- Requires Hermes: `>=0.21.5`
- Version: 2.0.1
- In the catalog since: 2026-10-04, updated 2026-10-20

## Links

- [Full setup and settings (official page)](https://hermes-agent.nousresearch.com/docs/plugins/homeassistant)
- [Source code](https://github.com/NousResearch/hermes-official-plugins/tree/main/homeassistant)
- [All plugins](https://hermeswatcher.com/plugins.md)

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