Anyone working with AI coding assistants knows the frustration of hitting usage limits mid-session. I recently discovered CodexBar while evaluating different ways to manage my workflow across Claude Code, Cursor, and other AI development tools. The app sits in your menu bar and provides real-time tracking of API usage limits and session quotas across eight different AI coding platforms.
CodexBar displays usage information in a dual-meter format - session usage on top, weekly limits on the bottom. What I appreciate most is the countdown timer showing exactly when limits reset. During my time with the app, I’ve found this particularly helpful when coordinating work across multiple AI tools, since I can see at a glance which service has available quota before starting a task.
The app monitors Codex, Claude Code, Cursor, Gemini, Antigravity, Droid, Copilot, and z.ai. It reuses existing browser cookies from Safari, Chrome, or Firefox to access dashboard information, which means no passwords are stored locally. This is a necessary trade-off for functionality, but the privacy-conscious approach aligns with how I prefer tools to handle credentials.
CodexBar includes a bundled CLI tool for scripts and CI workflows, plus WidgetKit support if you prefer snapshot widgets mirroring the menu card. The app also tracks provider status incidents, though in my usage this has been more of a background feature than something I actively monitor.
Built by Peter Steinberger and released as free and open-source software under the MIT license, CodexBar runs on macOS 14 or later with support for both Apple Silicon and Intel Macs. You can download it from the GitHub releases page or install via Homebrew with brew install --cask steipete/tap/codexbar.
For developers juggling multiple AI coding assistants, CodexBar removes the guesswork from quota management. The app works well for its specific purpose, though users with already crowded menu bars might need to reorganize their utilities to accommodate the display.
