Google Home MCP opens smart homes to third-party AI agents

The Verge reports that Google is opening its smart-home platform to third-party AI agents through Google Home MCP, an integration based on the standardized Model Context Protocol. The tool can let agents such as Claude, Open Claw, Google Antigravity and Hermes monitor and control connected devices, inspect event history, and act on a user’s behalf.

According to Taylor Lehman, group product manager at Google Home & Nest, agents could compare camera events, use device history to estimate how many loads of laundry were done last week or how long lights stayed on, send audio messages through a Google Home speaker, and create a custom dashboard. Google Home MCP does not replace Gemini for Home, which remains Google’s interface in the Home app and Google Nest speakers.

At launch, access is limited to Google Home Premium Advanced users in the US, priced at $20 per month or $200 per year, with rollout expected in the coming weeks. Setup requires a Google Cloud project. Google says the integration applies rate limits and safety protections, including blocking agents from unlocking doors, but Lehman warns that connecting an agent can produce unexpected or undesired behavior.

Google launched API access to its smart home in 2024. The Verge describes Home MCP as part of Google’s broader effort to provide infrastructure that other companies can use for consumer-facing AI services.