AjarYour Mac responds to how you work, not what you remember to press.

Ajar

Ajar is a Mac utility that syncs display brightness, keyboard backlight, and system volume to your laptop lid angle—while keeping your Mac awake for AI agents and long-running tasks. It replaces Amphetamine with intelligent, signal-driven rules that eliminate manual toggles.

Product Highlights

• Lid Angle Sync: Display brightness, keyboard backlight, and volume automatically adjust based on lid position via a customizable curve
• AI Agent Awake: Detects activity from Claude Code, Codex, and Gemini CLI by monitoring session files—keeps Mac awake while agents think, no keyboard activity needed
• Six Smart Awake Rules: Combine lid angle, app focus, CLI processes, Wi-Fi networks, mounted volumes, and power connection to define when sleep is blocked
• Signal-Driven Design: No forgotten toggles—Mac sleeps automatically when conditions clear, preserving battery life
• Universal Apple Silicon Support: Runs on macOS 14+ across all Apple Silicon Macs, with lid sync exclusive to MacBook models

Use Cases

• AI Development: Keep Mac awake during extended Claude Code or Codex sessions without touching keyboard or settings
• Video Production: Prevent sleep during Final Cut renders or ffmpeg encodes using process or volume-based rules
• Mobile Workflows: Automatically dim screen and lower volume when closing lid partially, brighten when opening fully
• Overnight Tasks: Rsync backups, Xcode builds, or ML training runs stay awake via disk-mounted or process-running triggers
• Office-to-Cafe Transition: Sleep rules activate only on trusted Wi-Fi, automatically relaxing when you leave

Target Audience

Developers, video editors, and power users who run AI agents or long background tasks on MacBook and want intelligent automation without battery drain from forgotten awake toggles.