A Model Context Protocol server gives third-party agents access to devices and event history in the Google Home ecosystem, in Early Access in the United States.
On September 16, 2026, Google opened early access to Home MCP, a Model Context Protocol server that exposes devices and event history from the Google Home ecosystem to external agents. Any agent who knows how to call MCP tools can connect to it: Google cites Antigravity, Claude, Hermes and OpenClaw.
The uses put forward go beyond traditional voice control: synthesis of sequences filmed by several cameras, consultation of device history, broadcasting a voice message on speakers, construction of personalized dashboards. Getting started involves creating a Google Cloud project and transmitting the MCP configuration to the chosen agent, which then manages authentication and authorizations.
Google is framing opening with speed limits and guardrails — unlocking doors remains prohibited — and warns that behavior will depend on the agent plugged in, with potentially unexpected results. The rollout is starting in English, for US subscribers to Google Home Premium Advanced.
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