CLI Interface

This guide explains how to manage light groups using the keylightctl command-line tool.

Creating Groups

Create a new group:

keylightctl group add my-group

You can also specify the name as a flag:

keylightctl group add --name my-group

Or without any arguments to be prompted interactively:

keylightctl group add

Listing Groups

View all groups:

keylightctl group list

For parseable output:

keylightctl group list --parseable

This shows all groups with their IDs, names, and member lights.

Getting Group Information

View the details of a specific group:

keylightctl group get GROUP_ID

For parseable output:

keylightctl group get GROUP_ID --parseable

Controlling Groups

The basic syntax for setting group properties is:

keylightctl group set GROUP_ID PROPERTY VALUE

Power Control

Turn all lights in a group on:

keylightctl group set GROUP_ID on true

Turn all lights in a group off:

keylightctl group set GROUP_ID on false

You can also use "on" and "off" as values:

keylightctl group set GROUP_ID on on
keylightctl group set GROUP_ID on off

Brightness Control

Set brightness for all lights in a group (0-100):

keylightctl group set GROUP_ID brightness 80

Color Temperature Control

Set color temperature for all lights in a group in Kelvin (2900-7000):

keylightctl group set GROUP_ID temperature 4500

Modifying Group Membership

Edit the lights in a group:

keylightctl group edit GROUP_ID light-1 light-2 light-3

This replaces all lights in the group with the specified lights.

Deleting Groups

Delete a group:

keylightctl group delete GROUP_ID

Skip the confirmation prompt:

keylightctl group delete GROUP_ID --yes

This removes the group but does not affect any lights.

Interactive Mode

If you don't provide all required arguments, keylightctl will prompt you interactively:

# This will show you a list of groups to choose from
keylightctl group get

# This will prompt for group, property, and value
keylightctl group set

# This will prompt for group name
keylightctl group add

Group Properties

Groups support the same control operations as individual lights:

• on: Power state (true/false, on/off)
• brightness: Brightness level (0-100)
• temperature: Color temperature in Kelvin (2900-7000)

Examples

Common usage patterns:

# Create a group
keylightctl group add office-lights

# List all groups
keylightctl group list

# Get group info
keylightctl group get group-123451

# Turn on all lights in a group at 80% brightness, warm temperature
keylightctl group set group-123451 on true
keylightctl group set group-123451 brightness 80
keylightctl group set group-123451 temperature 3200

# Edit group membership
keylightctl group edit group-123451 "Elgato Key Light ABC1._elg._tcp.local." "Elgato Key Light XYZ2._elg._tcp.local."

# Delete a group
keylightctl group delete group-123451

Group IDs

Group IDs are typically in the format "group-" followed by a numeric identifier (e.g., "group-123451"). You can often use the group name as well for identification in some commands.