Google Home opens to third-party AI agents through new MCP server in early access

In a post on the Google Home and Nest community site, a Google product manager said any agent able to call MCP tools can work with devices and activity records across the Home ecosystem, including Nest cameras, doorbells and thermostats and Matter-compatible products such as light bulbs. Suggested uses include summarizing footage from several cameras, tallying appliance or lighting use over time, sending spoken messages through Home speakers and building custom dashboards from plain-language requests. Google's post also named the Hermes agent, and TechCrunch's report added ChatGPT to the list of compatible agents.

Setup is geared to technical users, who must create a Google Cloud project, configure it for Home MCP, pass the details to their agent and then sign in to grant permissions. Google said the server enforces rate limits and blocks sensitive actions such as unlocking doors, and it cautioned that agents may still behave in unexpected or unwanted ways.

The rollout is in U.S. English and will continue over the coming weeks. TechCrunch said Google declined to comment on plans for other subscription tiers or countries.