The distance between the demo and setup
Seen from the street, the difference is this: Google Home will let an MCP-capable agent such as Claude, Hermes, Open Claw or Google Antigravity work with the household's devices and event history. Taylor Lehman, a product manager for Google Home and Nest, wrote that the hook can answer ordinary jobs such as camera summaries, how many laundry loads ran, or how long the lights stayed on. The same hook can also ask the agent to build a custom dashboard.[1]
Before that job starts, the household needs Google Home Premium Advanced in the United States and a Google Cloud project configured for Home MCP. Access is rolling out from today through the coming weeks. The 20 dollars a month or 200 dollars a year plan is the same higher tier already sold for longer camera history and richer alerts. Setup is not a single switch in the Home app.[1]
The speaker still belongs to Gemini, and the lock stays shut
Lehman's post says Home MCP does not replace Gemini for Home. Voice on the speaker and in the Home app stays with Google's own assistant; the third-party agent touches devices from its own interface and can leave a finished-task audio note on the speaker. Google says the hook enforces rate limits and safety protections, including a ban on unlocking doors. Lehman also wrote that the connected agent can produce unexpected or even undesired behavior.[1]
Where to look next week
My read is that the friction is not the agent flipping a light, it is that the first connection still goes through a Google Cloud project. The Verge reviewer's Home Assistant MCP test last year showed that another platform can take natural-language automation; a Google Home help page does not, for now, document a path without a Cloud project. The observable mark is documentation that Home MCP opens to another plan or country, or connects without a Cloud project.[1]