What is codexlimits?

CodexLimits is a small macOS menu bar app that helps you keep an eye on how much of your ChatGPT Codex usage allowance you have used. Codex is OpenAI's coding assistant, and like many AI tools it has usage limits that reset over time, so this app is meant to make those limits visible at a glance instead of you having to check a website. The app lives in the Mac menu bar and shows two numbers: your usage percentage for the current 5 hour window and for the current week. Each percentage changes color between green, orange, and red depending on how close you are to hitting the limit, so you can tell your usage status without reading exact numbers. You can choose how often the app refreshes this information, picking an interval of 1, 2, 3, or 5 minutes. Beyond the menu bar display, the project also includes small and medium sized widgets built with Apple's WidgetKit framework, so the same usage information can appear on the macOS desktop or notification center alongside other widgets. To get its data, CodexLimits uses an embedded web view that logs into ChatGPT directly, then reads usage information from an internal ChatGPT web address rather than a public API, and shares that data with its widgets through what Apple calls an App Group, a way for an app and its widgets to share information safely. The app also keeps the existing macOS system localizations, meaning it should display correctly in different languages already supported by macOS. Building the app requires Xcode, an Apple Developer account to select your development team, and registering the shared App Group for both the main app and the widget target before compiling the CodexLimits build target. The README for this project is fairly short and does not go into detail about error handling, supported macOS versions, or long term maintenance plans. This project is aimed at developers who use ChatGPT Codex regularly and want a lightweight way to track their remaining usage without opening a browser. It is released under the MIT license.