Agent Meter – Native macOS menu bar monitor for CLI coding agents

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A native macOS menu bar CLI Agent monitor (Rex terminal only). It detects active Claude Code, Codex CLI, Copilot CLI, and Antigravity CLI sessions running inside Rex in real time, letting you manage all agents from the menu bar without breaking your coding flow.

• Stop Babysitting y/n Prompts : Get an instant amber menu bar alert the moment an agent s for permission, and click**Allow ⏎** or** Deny Esc** inline without leaving your current window.
• No More Tab Hunting : Preview the latest terminal output of all local and SSH sessions in one place, and press**⌥ + Return** (or click any card) to jump straight to the exactRex window and tab.
• Prevent Mid-Task Context Compaction : Monitor each session's 5-segment context window usage meter (% ) at a glance before auto-compaction catches you off guard.
• 1-Click Session Launch : Start a new Claude, Codex, Copilot, or Antigravity session in any recent workspace directory directly from the**+** menu.

(Global shortcuts can be enabled or disabled in Settings.)

• macOS 14.0+
• Rex terminal (Rex only; other terminal emulators are not supported)
• Swift 6.0+ (Xcode Command Line Tools)

Build the .app bundle and open it:

zsh scripts/build-app.sh
open "build/Agent Meter.app" --args --show-panel

Or build directly with Swift Package Manager:

swift build -c release

Demo mode:

open -n "build/Agent Meter.app" --args --demo --show-panel