Google Home/Nest

Control Google Nest thermostats, cameras, and doorbells via Google Smart Device Management API using curl and jq commands.

Google Home / Nest CLI

Control Google Nest devices via the Smart Device Management (SDM) API using curl + jq.

Setup (Required)

1. Create a Google Cloud Project

   • Go to https://console.cloud.google.com
   • Create a new project

2. Enable the SDM API

   • APIs & Services → Library
   • Search "Smart Device Management"
   • Enable it

3. Create OAuth Credentials

   • APIs & Services → Credentials
   • Create OAuth 2.0 Client ID
   • Download the JSON file
   • Extract client_id and client_secret

4. Register Your Devices

   • Visit https://nests.google.com/frame/register-user
   • Accept the terms

5. Get Access Token

   bash

   # Replace with your values
   curl -s \
     -d "client_id=YOUR_CLIENT_ID" \
     -d "client_secret=YOUR_CLIENT_SECRET" \
     -d "refresh_token=YOUR_REFRESH_TOKEN" \
     -d "grant_type=refresh_token" \
     https://www.googleapis.com/oauth2/v4/token
   

Quick Start

bash

# List devices
google-home-cli devices

# Get thermostat info
google-home-cli thermostat "Living Room" --info

# Set temperature (heat/cool/auto)
google-home-cli thermostat "Living Room" --temp 72

# Query camera
google-home-cli camera "Front Door" --status

Device Commands

Thermostats

• google-home-cli thermostat <name> — show current temp/humidity
• --temp <degrees> — set target temperature
• --mode heat|cool|auto — set HVAC mode
• --fan on|auto — control fan

Cameras & Doorbells

• google-home-cli camera <name> — get stream/status
• --snapshot — download current image
• --stream — start live stream URL

Speakers & Displays

• google-home-cli speaker <name> — device info
• --volume 0-100 — set volume
• --stop — stop playback

Environment Variables

bash

export GOOGLE_HOME_CLIENT_ID="your-client-id"
export GOOGLE_HOME_CLIENT_SECRET="your-client-secret"
export GOOGLE_HOME_ACCESS_TOKEN="your-access-token"

Alternative: Direct API Calls

bash

# List all devices
curl -s -H "Authorization: Bearer $ACCESS_TOKEN" \
  "https://smartdevicemanagement.googleapis.com/v1/enterprises/YOUR_PROJECT_ID/devices"

# Get device traits
curl -s -H "Authorization: Bearer $ACCESS_TOKEN" \
  "https://smartdevicemanagement.googleapis.com/v1/enterprises/YOUR_PROJECT_ID/devices/YOUR_DEVICE_ID"

Helper Script

A nest CLI helper is included at scripts/nest:

bash

# Make it available globally
ln -sf /Users/mitchellbernstein/clawd/skills/google-home/scripts/nest /usr/local/bin/nest

# List devices
nest list

# Get thermostat status
nest status "enterprises/PROJECT_ID/devices/DEVICE_ID"

# Set temperature (Celsius)
nest temp "enterprises/PROJECT_ID/devices/DEVICE_ID" 22

# Set mode
nest mode "enterprises/PROJECT_ID/devices/DEVICE_ID" HEAT

Configuration

Create ~/.config/google-home/config.json:

json

{
  "project_id": "your-google-cloud-project-id",
  "access_token": "your-oauth-access-token"
}

Notes

• Tokens expire; refresh them periodically
• Device names use full path: enterprises/PROJECT_ID/devices/DEVICE_ID
• Temperature is in Celsius (convert from Fahrenheit if needed)
• Camera streams require additional permissions