Google Home Lets Outside AI Agents In, for $20 a Month

Google Home now lets an outside AI agent read and control your smart home, if you pay for Premium Advanced. Google opened early access on 16 September to US subscribers in English, and Premium Advanced is $20 a month or $200 a year.

It is not a switch in the Home app. Google calls it Home MCP, and you connect it by setting up a Google Cloud project and OAuth credentials, then adding the server to an agent such as Claude, OpenClaw, Hermes or Google’s own Antigravity. Google pitches it at “tinkerers”, and the setup reads like it.

What an agent can do in your home

MCP, the Model Context Protocol, is a standard way for an AI assistant to call tools. Google’s server gives it five: list your homes, list the devices in one, read their current state, run actions on them, and read their history.

In practice, Google describes:

• Controlling devices across Nest and Works with Google Home or Matter kit, from a thermostat to a light bulb.
• Reading history: its example is counting how many loads of laundry ran in a week.
• Summarising camera footage across all your cameras and showing the clips.
• Speaking on a Google Home speaker when a task finishes, and building a custom dashboard.

Automations are not supported yet: Google’s developer page says so directly, and puts them in a future release with no date. CNET’s report described setting up automations, which Google’s own page rules out for now.

What Google stops it doing

Unlocking doors is blocked, along with other “sensitive actions” Google does not list. Google also applies rate limits. That single example is all Google publishes, so whether an agent can disarm an alarm or open a garage door is not something its pages answer.

Familiar-face data needs a separate yes. Only a home manager can give that consent, and it needs a Nest camera or doorbell with familiar face detection turned on.

The approval step is in the agent, not in Google Home. When your AI client asks for permission to run a tool, that is the confirmation Google describes. Google also warns that connecting an agent “can result in unexpected or even undesired behavior”, and tells you to inform other people in the household or set up a separate test home. The lock rule matters more than usual here, because a lock behaves differently from a bulb when something goes wrong.

What it costs

Subscription	Google Home Premium Advanced, $20 a month or $200 a year (US)
Also required	A Google Cloud project; Google does not say whether it costs anything
The agent	Whatever your AI service charges; Google does not specify a plan

Anyone already paying for Advanced for camera history gets this included. Anyone who is not is looking at $200 a year before the agent’s own subscription, which is the same fee we counted in what a video doorbell costs after you buy it.

Turning it off

Google says access can be revoked at any time from the Google Home app or your Google Account page. One catch from Google’s help page on third-party access: removing access from your own account does not remove access that another household member granted through theirs.

Before connecting one

• Start in a test home, as Google suggests, if the household shares devices.
• Google’s other household agent works differently. Its Labs experiment CC reads only the email senders you approve: Google’s CC for families.
• Expect rough edges. Google lists some device traits as experimental and warns that responses can be slower than expected.
• The agent needs the internet as much as Google does. Everything here runs through the cloud, so it stops with your connection, the same way the rest of a smart home does when the internet drops.