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

1. Enable the SDM API

- APIs & Services → Library

- Search "Smart Device Management"

- Enable it

1. Create OAuth Credentials

- APIs & Services → Credentials

- Create OAuth 2.0 Client ID

- Download the JSON file

- Extract client_id and client_secret

1. Register Your Devices

- Visit https://nests.google.com/frame/register-user

- Accept the terms

1. 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

# 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

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

# 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:

# 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:

{
  "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