AI Usage Tracker: Claude & Codex Limits Chrome extension security report

AI Usage Tracker is a free, privacy-first Chrome extension that surfaces your Claude and Codex (ChatGPT) usage limits without ever leaving the tab you're working in. It reads the rate-limit data straight from your own authenticated sessions — there is no external server, no account to create, and no telemetry. # What you see - A popup with the 5-hour session window and the 7-day weekly window for each provider, including time-to-reset countdowns. - An on-page overlay next to the chat input on claude.ai and chatgpt.com so you can pace yourself without opening the popup. # Who it's for - Engineers running long Claude Code or Codex sessions who need to know how much budget they have left before the next reset. - ChatGPT Plus and Pro subscribers who want a clear read on their weekly cap. - Anyone tired of hitting "you've reached your limit" with no warning. # How it works Every five minutes the extension's background worker re-reads the same usage endpoints the official web apps already call when you're signed in. The data is cached in `chrome.storage.local` and rendered by a small React UI. Nothing is sent outside your browser. # Privacy - No analytics, no tracking, no remote configuration. - No accounts, no sign-up, no email collection. - All data stays in `chrome.storage.local` on this device. - Open source — see the linked repository for the full code.