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Overview

Loop can be controlled via AppleScript using the open location command, which wraps Loop’s URL scheme. This enables powerful automation and integration with macOS workflows.
AppleScript commands use Loop’s URL scheme under the hood. All URL scheme commands can be executed via AppleScript.

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Basic Syntax

AppleScript uses the open location command to invoke Loop’s URL scheme: 
open location "loop://<command>/<parameters>"

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Alternative Syntax

You can also use osascript from the command line: 
osascript -e 'open location "loop://<command>/<parameters>"'

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Activating Loop

To bring Loop to the foreground: 
tell application "Loop" to activate
From Terminal: 
osascript -e 'tell application "Loop" to activate'

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Direction Commands

Move or resize windows using directional commands.

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Basic Directions

-- Move window to left half
open location "loop://direction/left"

-- Move window to right half
open location "loop://direction/right"

-- Move window to top half
open location "loop://direction/top"

-- Move window to bottom half
open location "loop://direction/bottom"

-- Maximize window
open location "loop://direction/maximize"

-- Center window
open location "loop://direction/center"

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Command Line Equivalents

# Move to left half
osascript -e 'open location "loop://direction/left"'

# Maximize window
osascript -e 'open location "loop://direction/maximize"'

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Screen Commands

Move windows between multiple displays. 
-- Move window to next screen
open location "loop://screen/next"

-- Move window to previous screen
open location "loop://screen/previous"

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Command Line Equivalents

# Move to next screen
osascript -e 'open location "loop://screen/next"'

# Move to previous screen
osascript -e 'open location "loop://screen/previous"'

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Action Commands

Execute predefined or custom window actions.

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Predefined Actions

-- Maximize window
open location "loop://action/maximize"

-- Move to left half
open location "loop://action/leftHalf"

-- Center window
open location "loop://action/center"

-- Move to top-left quarter
open location "loop://action/topLeft"

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Custom Actions

-- Execute custom action (if defined in Loop)
open location "loop://action/myCustomLayout"

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Command Line Equivalents

# Execute maximize action
osascript -e 'open location "loop://action/maximize"'

# Execute custom action
osascript -e 'open location "loop://action/myCustomLayout"'

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Keybind Commands

Execute custom keybinds by name. 
-- Execute named keybind
open location "loop://keybind/myCustomLayout"

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Command Line Equivalent

osascript -e 'open location "loop://keybind/myCustomLayout"'

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List Commands

Discover available commands, actions, and keybinds. 
-- List all available commands
open location "loop://list/all"

-- List all window actions
open location "loop://list/actions"

-- List all custom keybinds
open location "loop://list/keybinds"

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Command Line Equivalents

# List all commands
osascript -e 'open location "loop://list/all"'

# List actions only
osascript -e 'open location "loop://list/actions"'

# List keybinds only
osascript -e 'open location "loop://list/keybinds"'
List commands open a temporary text file with the results, which auto-deletes after 60 seconds.

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Advanced AppleScript Examples

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Sequential Actions

Chain multiple commands together: 
-- Move window right, wait, then maximize
open location "loop://direction/right"
delay 0.5
open location "loop://action/maximize"

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Conditional Window Management

tell application "System Events"
    set frontApp to name of first application process whose frontmost is true
end tell

if frontApp is "Safari" then
    open location "loop://action/leftHalf"
else if frontApp is "Terminal" then
    open location "loop://action/rightHalf"
end if

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Application-Specific Layouts

-- Apply layout when opening specific app
tell application "Xcode"
    activate
    delay 1
end tell

open location "loop://action/maximize"

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Multi-Window Layout

-- Layout multiple windows
tell application "Safari" to activate
delay 0.3
open location "loop://direction/left"

tell application "Mail" to activate
delay 0.3
open location "loop://direction/right"

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Shell Script Integration

Create reusable shell scripts with AppleScript commands.

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Example: Workspace Setup Script

#!/bin/bash
# setup-workspace.sh
# Set up development workspace layout

# Open and position terminal on left
open -a Terminal
sleep 1
osascript -e 'open location "loop://direction/left"'

# Open and position browser on right
open -a Safari
sleep 1
osascript -e 'open location "loop://direction/right"'

echo "Workspace setup complete!"

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Example: Quick Window Positions

#!/bin/bash
# quick-position.sh
# Quick window positioning tool

case "$1" in
    left)
        osascript -e 'open location "loop://direction/left"'
        ;;
    right)
        osascript -e 'open location "loop://direction/right"'
        ;;
    max)
        osascript -e 'open location "loop://action/maximize"'
        ;;
    *)
        echo "Usage: $0 {left|right|max}"
        exit 1
        ;;
esac
Usage: 
chmod +x quick-position.sh
./quick-position.sh left
./quick-position.sh max

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Keyboard Maestro Integration

Use AppleScript in Keyboard Maestro macros.

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Example Macro: Window to Left Half

-- Action: Execute AppleScript
open location "loop://direction/left"

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Example Macro: Execute Shell Script

# Action: Execute Shell Script
osascript -e 'open location "loop://direction/right"'

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BetterTouchTool Integration

Create custom gestures and shortcuts.

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Named Trigger

# In BetterTouchTool, create a "Execute Terminal Command" action:
osascript -e 'open location "loop://action/maximize"'

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Alfred Integration

Create Alfred workflows for quick window management.

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Workflow Script

# Alfred Script Filter with keyword "loop"
query="{query}"
osascript -e "open location \"loop://action/${query}\""
Usage in Alfred:
  • Type loop maximize to maximize window
  • Type loop left to move window left

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Automator Integration

Create macOS Services with Automator.

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Service: Move Window Left

  1. Open Automator
  2. Create new “Quick Action”
  3. Add “Run AppleScript” action:
on run {input, parameters}
    open location "loop://direction/left"
    return input
end run
  1. Save as “Move Window Left”
  2. Access from Services menu or keyboard shortcut

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Error Handling

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Try-Catch Blocks

try
    open location "loop://action/myCustomAction"
on error errMsg
    display dialog "Error: " & errMsg buttons {"OK"} default button 1
end try

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Checking Application State

tell application "System Events"
    if not (exists process "Loop") then
        tell application "Loop" to activate
        delay 1
    end if
end tell

open location "loop://direction/left"

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Complete Script Examples

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Development Workspace Setup

-- setup-dev-workspace.applescript
-- Complete development environment setup

-- Open IDE
tell application "Xcode"
    activate
    delay 1
end tell
open location "loop://direction/left"

-- Open terminal
tell application "Terminal"
    activate
    delay 1
end tell
open location "loop://action/topRight"

-- Open browser
tell application "Safari"
    activate
    delay 1
end tell
open location "loop://action/bottomRight"

display notification "Development workspace ready!" with title "Loop Automation"

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Focus Mode

-- focus-mode.applescript
-- Enter focus mode with single maximized window

-- Hide all windows except frontmost
tell application "System Events"
    set visible of every process whose visible is true and frontmost is false to false
end tell

-- Maximize frontmost window
open location "loop://action/maximize"

display notification "Focus mode activated" with title "Loop Automation"

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Screen-Based Layout

-- screen-layout.applescript
-- Apply layout based on number of screens

tell application "System Events"
    set screenCount to count of desktops
end tell

if screenCount > 1 then
    -- Multi-screen: move to next screen
    open location "loop://screen/next"
    open location "loop://action/maximize"
else
    -- Single screen: use half layout
    open location "loop://direction/left"
end if

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Command Reference

Command TypeAppleScript SyntaxDescription
Directionopen location "loop://direction/<dir>"Move/resize window
Screenopen location "loop://screen/<next|prev>"Move between displays
Actionopen location "loop://action/<action>"Execute action
Keybindopen location "loop://keybind/<name>"Execute keybind
Listopen location "loop://list/<type>"List commands
Activatetell application "Loop" to activateBring Loop to front

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Best Practices

Add delays between commands when chaining multiple actions to allow windows to finish positioning before the next command executes.
Check application state before executing commands to ensure Loop is running.
Use try-catch blocks for robust error handling in production scripts.
Commands operate on the frontmost window. Ensure proper window activation and timing when scripting multi-window layouts.

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See Also

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