HA NOVA — Talk to your home.
Every change checked.

1. Looks first

   Reads your real devices, automations, and past runs first. No guessing.

2. Shows the exact change

   You see exactly what will change before anything is saved. Simple actions, like one light, run right away instead.

3. You approve

   Unlocks, gates, garage doors, the alarm, restarting Home Assistant, and deletes need more than an OK. You confirm them:

   • Click Confirm in a window on your computer
   • Or tap your linked phone at the same time

   No window and no phone? You type a four-digit code. Some deletes always use the code.

   More about confirming

   Everything that isn’t a simple action waits for your OK. HA NOVA decides what needs it, never the AI.

   Window. On a computer with a screen, a window opens. Click Confirm (OK on Windows) or Cancel. Your AI never sees a code.

   Phone. The one phone you linked, iPhone or Android, asks at the same time as the window, in the Home Assistant Companion app. The first answer counts, and the phone shows the result. With no screen, like on a Linux server, or with the window turned off, the phone asks alone. (Not with a standalone relay that runs on your own token.) You can answer on the locked phone or its Apple Watch. So whoever holds your phone can answer too, but only for that one action, and only while it waits (up to 90 seconds on a computer, up to 3 minutes in Claude or ChatGPT). To link, move, or turn off phone confirmation, you must unlock the phone. Once a phone is linked, an action it can’t reach is refused, never moved to chat.

   Code. With neither, you get a four-digit one-time code, in chat or in your AI app’s own form where it shows one. The AI can see the code, so it only counts when you type it yourself.

   Automation, script, and dashboard deletes use the window or the phone. Other deletes, like helpers, scenes, and areas, always use a four-digit code in chat.

   If anything changed since the preview, nothing is sent. Before a restart, HA NOVA checks your config first. If something is wrong, it says what before you confirm.

   Careful: anything you let control your screen can click that window too. That means computer use, apps you gave Accessibility access, and on Windows and some Linux desktops, other programs. To turn the window off, run ha-nova setup confirm-window off.

   Every safety rule, and the test behind it: the safety page on GitHub (opens in a new tab).

4. Saves a way back

   Saves a copy before it deletes or fully replaces an automation, script, scene, or dashboard.

5. Saves and checks

   Saves the change, then reads it back to check that it matches what you approved.

6. Checks its own work

   Looks for mistakes, conflicts, and things that may break later.

7. Offers a safe test

   After an automation or script is saved, you get a test plan that fits the risk.

8. Lets you undo

   Reply revert to undo the latest checked update.

   More about undo

   Deleted automations, scripts, scenes, dashboards, and storage helpers come back from their saved copy. “Undo that” right after a delete works too.

   Revert and saved copies only cover changes made through HA NOVA. For anything else, use a Home Assistant Backup. It covers the whole system.

Ground rules

• The Relay’s Home Assistant login never reaches the AI.

• Stored codes, like a lock code or the backup password, stay hidden from the AI. Which codes?

• On App installs, each device gets its own connection. One click in NOVA cuts a device off.

• Every rule the AI follows is a plain text file. Read them on GitHub (opens in a new tab).

• No HA NOVA cloud in the middle. No usage tracking. No install counting.