How much does Google Home MCP cost?

Google Home MCP is gated behind the Google Home Premium Advanced subscription, which Google prices at $20 per month or $200 per year. There is no separate charge for the MCP server itself during early access. The Home Developer MCP server, which serves documentation and Matter and Thread specifications to coding tools, is free and offers an unauthenticated trial path on a shared public quota.

Which AI agents work with Google Home MCP?

Any client that can call Model Context Protocol tools works with Google Home MCP. Google names Google Antigravity, Claude and OpenClaw as examples in its documentation. Because the server is a standard MCP endpoint reached with OAuth credentials the user creates, the list is not a fixed allowlist — an agent that speaks MCP and holds valid credentials can connect.

Can an agent unlock my doors through Google Home MCP?

No. Google Home MCP enforces rate limits and safety protections that specifically prohibit sensitive actions such as unlocking doors, so an agent cannot carry that out even with valid credentials. Access to familiar-face data additionally requires consent from the structure manager. Any agent's access can be revoked at any time from the Google Home app or the My Accounts page.

What is the difference between Home MCP and Home Developer MCP?

Home MCP connects a personal agent to a real household — its devices, live state, and event history — and needs a Premium Advanced subscription plus OAuth credentials. Home Developer MCP is aimed at coding tools instead: it searches Google Home documentation and the Matter 1.5.1 and Thread 1.4.1 specifications, touches no one's home, and can be trialled without an API key or Google Cloud project.

Where is Google Home MCP available?

Google Home MCP is rolling out in English to Google Home Premium Advanced subscribers in the United States, starting September 16, 2026 and continuing over the following weeks. Google declined to say whether the feature will reach other subscription tiers or other countries. The setup guide and tool reference are published in the Google Home Developer Center.

Google · 2026-09-16 · major

Google Home MCP — any MCP agent can now run your smart home

Google Home MCP is a Model Context Protocol server that lets any MCP agent — Antigravity, Claude, OpenClaw — list devices, read their state, run actions and query home history. Early access is open to Home Premium Advanced users in the US.

Google's smart home platform now speaks MCP, so the agent you already use can read and control your Nest devices.

Quick facts

Maker	Google
Status	Early Access
Server URL	https://home.googleapis.com/mcp
Tools	list_homes, list_home_resources, list_home_states, run_home_actions, list_home_history
Requires	Google Home Premium Advanced
Price	$20 / month or $200 / year
Availability	English, US

What is it?

Home MCP opens Google's smart home platform to outside agents for the first time. The server hands an agent five tools that cover the whole loop: find the homes and rooms it can reach, enumerate devices and the commands they accept, read live device state, run actions, and query past events. Google names Antigravity, Claude and OpenClaw as clients that already connect.

How does it work?

Agents talk to https://home.googleapis.com/mcp over the Model Context Protocol. Getting there runs through a Google Cloud project: enable the Home API, configure the OAuth consent screen, create OAuth client credentials, publish the app, then give the client ID and secret to the agent. A second server, Home Developer MCP, sits at a different endpoint and searches Google Home documentation plus the Matter 1.5.1 and Thread 1.4.1 specifications; it has an unauthenticated trial path on a shared quota, so coding tools can try it without any Cloud setup.

Why does it matter?

A Nest doorbell or thermostat could previously only be driven by Google's own assistant. Because Home MCP speaks an open protocol rather than a Google-only API, the assistant a household already uses can summarise camera footage across rooms, track how long lights were left on, or build a dashboard in plain language. Google keeps the guardrails on its side of the connection — rate limits apply, sensitive actions such as unlocking a door are refused, familiar-face data needs the structure manager's consent, and access can be revoked from the Google Home app.

Who is it for?

smart home owners and agent developers

Frequently asked questions

How much does Google Home MCP cost?: Google Home MCP is gated behind the Google Home Premium Advanced subscription, which Google prices at $20 per month or $200 per year. There is no separate charge for the MCP server itself during early access. The Home Developer MCP server, which serves documentation and Matter and Thread specifications to coding tools, is free and offers an unauthenticated trial path on a shared public quota.
Which AI agents work with Google Home MCP?: Any client that can call Model Context Protocol tools works with Google Home MCP. Google names Google Antigravity, Claude and OpenClaw as examples in its documentation. Because the server is a standard MCP endpoint reached with OAuth credentials the user creates, the list is not a fixed allowlist — an agent that speaks MCP and holds valid credentials can connect.
Can an agent unlock my doors through Google Home MCP?: No. Google Home MCP enforces rate limits and safety protections that specifically prohibit sensitive actions such as unlocking doors, so an agent cannot carry that out even with valid credentials. Access to familiar-face data additionally requires consent from the structure manager. Any agent's access can be revoked at any time from the Google Home app or the My Accounts page.
What is the difference between Home MCP and Home Developer MCP?: Home MCP connects a personal agent to a real household — its devices, live state, and event history — and needs a Premium Advanced subscription plus OAuth credentials. Home Developer MCP is aimed at coding tools instead: it searches Google Home documentation and the Matter 1.5.1 and Thread 1.4.1 specifications, touches no one's home, and can be trialled without an API key or Google Cloud project.
Where is Google Home MCP available?: Google Home MCP is rolling out in English to Google Home Premium Advanced subscribers in the United States, starting September 16, 2026 and continuing over the following weeks. Google declined to say whether the feature will reach other subscription tiers or other countries. The setup guide and tool reference are published in the Google Home Developer Center.

Try it

Add https://home.googleapis.com/mcp to your MCP client (Home Premium Advanced required)