MCP Reference: home.googleapis.com

Provides access to the user's home graph including structures, devices, and the ability to control them.

A Model Context Protocol (MCP) server acts as a proxy between an external service that provides context, data, or capabilities to a Large Language Model (LLM) or AI application. MCP servers connect AI applications to external systems such as databases and web services, translating their responses into a format that the AI application can understand.

Server Setup

You must enable MCP servers and set up authentication before use. For more information about using Google and Google Cloud remote MCP servers, see Google Cloud MCP servers overview.

Server Endpoints

An MCP service endpoint is the network address and communication interface (usually a URL) of the MCP server that an AI application (the Host for the MCP client) uses to establish a secure, standardized connection. It is the point of contact for the LLM to request context, call a tool, or access a resource. Google MCP endpoints can be global or regional.

The Home API MCP server has the following global MCP endpoint:

  • https://home.googleapis.com/mcp

MCP Tools

An MCP tool is a function or executable capability that an MCP server exposes to a LLM or AI application to perform an action in the real world.

Tools

The home.googleapis.com MCP server has the following tools:

MCP Tools
list_homes Retrieves a list of homes the user has access to.
list_home_resources Retrieves a list of home resources including devices. This is the primary tool for discovering what resources are available.
list_home_states Retrieves the current states of home resources including devices.
list_home_history Retrieves the history for home resources including devices.
run_home_actions Executes a list of actions on one or more resources. Should follow command format from DiscoverHomeResources.

Get MCP tool specifications

To get the MCP tool specifications for all tools in an MCP server, use the tools/list method. The following example demonstrates how to use curl to list all tools and their specifications currently available within the MCP server.

Curl Request 
curl --location 'https://home.googleapis.com/mcp' \
--header 'Authorization: Bearer {oauth-access-token}' \
--header 'content-type: application/json' \
--header 'accept: application/json, text/event-stream' \
--data '{
    "method": "tools/list",
    "jsonrpc": "2.0",
    "id": 1
}'