Google is opening its smart home platform to outside AI agents. The company has started rolling out early access to a Model Context Protocol server for Google Home, called Home MCP, that lets any MCP-capable agent, including Claude, Hermes, OpenClaw, ChatGPT and Google Antigravity, work with a user’s smart home devices and event history, TechCrunch reported.
What agents can do
Home MCP works with devices across the Google Home ecosystem, including Nest cameras, doorbells and thermostats and “Works with Google Home” or Matter devices like light bulbs. Google’s examples, via 9to5Google, include:
- Cross-camera analysis: ask what the kids did after school and get a summary across all cameras, with clips.
- Home history: use device state history to count laundry loads in a week or see how long lights were left on.
- Voice updates: an agent finishing an asynchronous task can send an audio message over a Google Home speaker.
- Custom dashboards: have the agent build a smart home view tailored to you.
Guardrails and setup
Google says Home MCP “enforces rate limits and safety protections, such as prohibiting sensitive actions like unlocking doors.” It also warns that “depending on your agent, connecting it to Home MCP can result in unexpected or even undesired behavior,” and tells users to review their agent’s developer policies and terms of service.
Setup isn’t one-click. Users create a Google Cloud project, configure it for Home MCP, give the configuration details to their agent, then sign in and grant permissions. Google’s Home Developer Center has setup guides.
Access is rolling out over the coming weeks to US English subscribers on Google Home Premium Advanced, the $20-per-month tier that also includes longer video history, descriptive notifications and daily summaries. Google wouldn’t say whether it will reach other tiers or markets. Google already supports MCP in Google Cloud, its developer tools and Workspace, and Home is its first consumer-facing MCP server.
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