macOS 14+  ·  Free  ·  Open Source

Monitor your
AI usage.
Stay in control.

AI使用量をメニューバーで監視

LimitBar lives in your menu bar and tracks Codex and Claude Code usage in real time — so you always know where you stand before hitting the limit.

Download View on GitHub →
LimitBar screenshot
Features
Everything you need
Real-time monitoring
Fetches Codex and Claude Code usage automatically at your chosen interval.
Floating widget
Detachable floating widget with configurable size, position, opacity, and layer order.
Smart notifications
Get notified when usage approaches your threshold or resets.
Usage history
Visual usage report with history graphs to track consumption over time.
Session auto-detect
Connects via Codex app or CLI auth, Claude in-app login, browser sessions, or Claude desktop app. No API keys needed.
Bilingual
Automatically switches between English and Japanese based on system language.
Integration
How it connects
Codex (OpenAI)
  • 1
    Codex app or CLI auth file — ~/.codex/auth.json
Claude Code (Anthropic)
  • 1
    Supported browser session — claude.ai / anthropic.com
  • 2
    Claude desktop app session
Supported browsers  —  Chrome · Brave · Edge · Arc · Chromium · Safari
Safari requires Full Disk Access permission.