Home Assistant control for DeepSeek Harness agents.
Read entity states · query history · call services — every state-changing call sits behind a human approval gate.

中文 · · ·

Zero runtime dependencies beyond the harness itself. Uses Home Assistant's built-in REST API — no MQTT, no WebSocket, no extra daemon.

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✨ What it looks like

Click any image to open the live demo — docs/demo.html simulates the full DSH conversation, and its live console talks to the bundled HA emulator (no real Home Assistant needed).

| ① Ask | ② Approval gate | ③ Done — state changed | |---|---|---| | | | | | The agent lists your lights with ha_list_entities. | ha_call_service pauses for a human approval dialog. | Approved — ha_get_state confirms the light turned on. |

And the Web UI dashboard card — call ha_dashboard and get a live snapshot of the whole home rendered right in the conversation:

The Home Assistant it plugs into — a typical smart-home dashboard like this one (illustration):

🎯 What can it do?

Talk to your home the way you talk to an assistant — every write goes through a human approval gate first.

| You say | What happens | |---|---| | "Check the whole house — which devices are still on?" | Agent scans with ha_list_entities / ha_get_state and summarizes | | "Show me the home dashboard." | ha_dashboard renders a live dashboard card in the conversation — devices, scenes and recent changes at a glance | | "Wait until the washer finishes, then tell me on my phone." | ha_wait_for_state polls to completion → ha_notify pushes to HA | | "What's the weather tomorrow — should I take an umbrella?" | ha_weather returns a structured forecast | | "Set the bedroom light to 200 brightness." | ha_call_service → approval dialog → executes → state updates instantly | | "Turn off every light in the living room." | Area targeting — one call controls the whole room | | "Start cinema mode." | Scene activation: dimmed lights + TV on — a whole cascade of devices in one shot (ha_events shows each change live) | | "What changed in the house in the last hour?" | Real-time state_changed events from the WebSocket feed | | "Is the living room warm enough? Compare with the bedroom." | ha_get_state / ha_render_template over sensors | | "Turn everything off, I'm leaving." | One scene (scene.away) or a multi-entity service call |

💡 Why it's good — how useful is it?

• One-line install: dsh plugin --profile web add dsh-smarthome, then just talk to the agent.
• Safe by default: every state-changing call stops for human approval; allowedDomains is a second deny-list belt. The agent can never touch your home without you saying yes.
• Natural language control: no apps to fiddle with, no API docs to memorize — "dim the lights" just works.
• Always current: state changes reach the agent in real time over WebSocket, so it never "thinks" the light is still on when you switched it off.
• Lightweight: zero runtime dependencies — plain REST + Node's built-in WebSocket. No MQTT broker, no extra daemon.
• Try it without Home Assistant: the repo ships a demo emulator + interactive demo page — 5 minutes to a full feel of the plugin.
• Engineered, not hacked together: 36 tests including a full real agent-loop end-to-end suite, strict TypeScript, CI.

💻 Your computer is the control center

dsh-smarthome runs right where dsh runs — on your computer. No phone app, no separate bridge, no context switch:

• 👀 Monitor while you work — the dashboard card (ha_dashboard) and the real-time event feed (ha_events) keep the whole house visible next to your editor: what's on, what just changed.
• 🎙️ Control by voice — add a community voice plugin to dsh (search the dsh-plugin topic for voice; e.g. dsh-voice does zero-key speech input + read-aloud, dsh-voice-chat does real-time speech) and just speak: "turn the bedroom light to 200" → approval → done. Hands-free while you keep typing.
• 🖥️ Everything in one window — code, watch the house, and control devices without ever leaving dsh. Every state-changing call still waits for your approval.

🛠 Features

| Tool | Description | Approval | |---|---|---| | ha_health | Verify the connection; return instance name, version, timezone, WebSocket status | read | | ha_list_entities | List entities, filter by domain (light, switch, sensor…) and text | read | | ha_list_areas | List rooms (areas) via the WebSocket API, e.g. living_room | read | | ha_list_devices | List physical devices via the WebSocket device registry | read | | ha_get_state | Full state + attributes of one entity | read | | ha_history | State-change timeline over a time window | read | | ha_events | Recent real-time state changes buffered from the WebSocket | read | | ha_list_scenes | List one-click scenes (cinema, goodnight, away…) | read | | ha_dashboard | Full home snapshot rendered as a dashboard card in the Web UI | read | | ha_wait_for_state | Poll until an entity matches / stops matching a state (washer done, temperature reached…) | read | | ha_notify | Send a notification via Home Assistant (persistent / phone / speaker) | no gate | | ha_weather | Current weather + structured forecast from the weather entity | read | | ha_call_service | Call any service — by entity, by area (whole room), by device, or scene | ask | | ha_render_template | Render a Jinja2 template server-side | ask |

Example prompts:

"Check that Home Assistant is reachable, then list the lights in the living room."

"Set the living room light to 60% brightness." (triggers an approval request)

"Show me the boiler switch history for the last 24 hours."

"Turn off every light in the bedroom." (area targeting — one call, whole room)

"Start cinema mode." (scene activation — lights dim, TV turns on)

"What changed in the house in the last hour?" (real-time ha_events)

📦 Install

Requires dsh ≥ 0.1.0-rc.6 (current npm latest).

# From npm (recommended — prebuilt):
dsh plugin --profile web add dsh-smarthome

# Or from GitHub (source install — pnpm builds on the fly):
# dsh plugin --profile web add github:YLifeOnlyOnce/dsh-smarthome
# If pnpm refuses to run the prepare build on a git dependency, allow it once:
#   add this to <profile>/pnpm-workspace.yaml, then re-run the add:
#     allowBuilds:
#       dsh-smarthome: true

Restart dsh --profile web after installing. Manage it in Settings → Plugins.

🧪 Try it without Home Assistant (demo mode)

No HA instance? The repo ships a fake HA emulator with a small living demo home whose state actually changes when you call services — perfect for trying the plugin before wiring up real hardware.

git clone https://github.com/YLifeOnlyOnce/dsh-smarthome
cd dsh-smarthome
pnpm install
pnpm demo:ha          # serves a fake Home Assistant at http://127.0.0.1:8124

In another terminal, configure the plugin (add to your profile's cordis.patch.yml):

- id: smarthome
  config:
    baseUrl: http://127.0.0.1:8124
    tokenEnv: HOME_ASSISTANT_TOKEN

Then start dsh and try:

HOME_ASSISTANT_TOKEN=demo-token dsh --profile web

"Check that Home Assistant is reachable, then list the lights."

"Turn on the bedroom light at 200 brightness." — an approval request pops up; approve it, and ha_get_state will show the light is actually on with brightness: 200.

"Turn off every light in the living room." — area targeting via the WebSocket area registry.

"What changed in the last minute?" — real-time state_changed events from the WebSocket feed.

The emulator also drifts the temperature sensor every few seconds, so ha_history and ha_events always have fresh data. Any Bearer token works; demo-token is just the convention.

Want to preview the UI without running dsh at all? Open docs/demo.html in a browser: it replays a simulated DSH conversation (tool cards + the approval dialog), and its live console talks to the emulator directly when it's running.

Ready-to-paste configs (demo / real HA / no-approval) live in examples/cordis.patch.yml.

⚙️ Configuration

Create a long-lived access token in Home Assistant: Profile → Security → Long-lived access tokens.

Override the plugin row in your profile's cordis.patch.yml (later layers win):

- id: smarthome
  config:
    baseUrl: http://192.168.1.10:8123   # your Home Assistant instance
    token: ''                           # prefer tokenEnv over committing a token
    tokenEnv: HOME_ASSISTANT_TOKEN      # env var holding the token
    timeoutMs: 15000
    requireApproval: true               # human approval for state-changing calls
    allowedDomains: []                  # e.g. ["light", "switch"]; empty = all domains
    maxHistoryEvents: 200
    wsEnabled: true                     # real-time events + area registry (WebSocket)
    eventBufferSize: 50                 # rolling ha_events buffer size

Then run dsh with the variable set:

HOME_ASSISTANT_TOKEN=<token> dsh --profile web

baseUrl defaults to http://homeassistant.local:8123 (the standard Home Assistant mDNS host). If no token is configured the plugin still loads — every tool call fails with a clear "not configured" message instead of crashing the harness.

How the token is resolved

tokenEnv is a credential reference resolved through the harness's credential seam: when the credentials service is present, the value is read from its layered sources (process environment → <cwd>/.env → $DSH_HOME/.env), falling back to process.env directly otherwise. The token is re-resolved per request / per socket connection, so a rotated credential reaches the very next call without a restart.

🔒 Security

• A Home Assistant token can control everything in your instance — there is no per-entity scope. That is why requireApproval defaults to true and ha_call_service / ha_render_template always route through the harness approval seam.
• allowedDomains is a second belt: when set, service calls on other domains are denied outright.
• Prefer tokenEnv over token so the secret never lands in a committed config file.

🛠 Development

pnpm install
pnpm typecheck   # strict TS against the published @deepseek-ai/* types
pnpm build       # bundle lib/ (ESM + d.ts)
pnpm test        # 24 tests: client suite + real ToolRuntime integration + full agent-loop E2E
node scripts/capture-demo.mjs   # regenerate the README screenshots

📋 Compatibility

Real Home Assistant compatibility

• Uses the v1 REST API (/api/states, /api/services/…, /api/history/…, /api/template, /api/config) and the WebSocket API (/api/websocket: auth, subscribe_events, config/area_registry/list, config/device_registry/list) — the same protocols the official HA frontend speaks.
• Requires a long-lived access token (Profile → Security → Long-lived access tokens).
• Caveats: self-signed HTTPS certificates are not supported (use http:// or a valid cert); a restricted token that cannot call services will fail ha_call_service.

DeepSeek Harness is in developer preview and changes fast. This plugin is verified against the published @deepseek-ai/dsh@0.1.0-rc.7 line; if a harness update breaks it, please open an issue.

📄 License

MIT