Home Assistant Assist

Control smart home devices by passing natural language to Home Assistant's Assist (Conversation) API. Fire and forget — trust Assist to handle intent parsing, entity resolution, and execution.

When to Use This Skill

Use this skill when the user wants to control or query any smart home device. If it's in Home Assistant, Assist can handle it.

How It Works

Pass the user's request directly to Assist:

curl -s -X POST "$HASS_SERVER/api/conversation/process" \
  -H "Authorization: Bearer $HASS_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"text": "USER REQUEST HERE", "language": "en"}'

Trust Assist. It handles:

• Intent parsing
• Fuzzy entity name matching
• Area-aware commands
• Execution
• Error responses

Handling Responses

Just relay what Assist says. The response.speech.plain.speech field contains the human-readable result.

• "Turned on the light" → Success, tell the user
• "Sorry, I couldn't understand that" → Assist couldn't parse it
• "Sorry, there are multiple devices called X" → Ambiguous name

Don't over-interpret. If Assist says it worked, it worked. Trust the response.

When Assist Returns an Error

Only if Assist returns an error (response_type: "error"), you can suggest HA-side improvements:

These are suggestions for improving HA config, not skill failures. The skill did its job — it passed the request to Assist.

Setup

Set environment variables in OpenClaw config:

{
  "env": {
    "HASS_SERVER": "https://your-homeassistant-url",
    "HASS_TOKEN": "your-long-lived-access-token"
  }
}

Generate a token: Home Assistant → Profile → Long-Lived Access Tokens → Create Token

API Reference

Endpoint

POST /api/conversation/process

Note: Use /api/conversation/process, NOT /api/services/conversation/process.

Request

{
  "text": "turn on the kitchen lights",
  "language": "en"
}

Response

{
  "response": {
    "speech": {
      "plain": {"speech": "Turned on the light"}
    },
    "response_type": "action_done",
    "data": {
      "success": [{"name": "Kitchen Light", "id": "light.kitchen"}],
      "failed": []
    }
  }
}

Philosophy

• Trust Assist — It knows the user's HA setup better than we do
• Fire and forget — Pass the request, relay the response
• Don't troubleshoot — If something doesn't work, suggest HA config improvements
• Keep it simple — One API call, natural language in, natural language out

Links

• Home Assistant Conversation API Docs