Google launches Home MCP, letting third-party AI agents control your smart home

Google launched early access to Home MCP, a Model Context Protocol integration that lets AI agents such as Claude, ChatGPT, Google Antigravity, Hermes, and OpenClaw control Google Home devices and analyze home data, starting with US Google Home Premium…

On September 16, 2026, Google announced early access to Home MCP, a Model Context Protocol (MCP) server/integration for Google Home that allows third-party AI agents — including Claude, ChatGPT, Google Antigravity, Hermes, and OpenClaw — to control devices and analyze home data. Using natural language, agents can control Nest devices, review camera summaries and perform cross-camera analysis, monitor activity, reason about device states, access event history, send voice messages via Nest speakers, and build custom dashboards. All Google Home and Matter devices are supported, including Nest doorbells and thermostats. Safety protections include rate limits and preventing agents from unlocking doors. Access begins this week for US Google Home Premium Advanced subscribers at $20/month (The Verge also cites a $200/year annual option), and setup requires a Google Cloud project configured for Home MCP plus user permission grants. Broader rollout timing was not announced. Google already supports MCP in Cloud, Workspace, and developer tools, and is positioning the move as part of a B2B2C strategy as smart home infrastructure.