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Shows Claude AI usage status in your browser toolbar See your Claude.ai usage limits at a glance — right in the toolbar badge. No setup needed, just log in to Claude and go. WHAT IT DOES The badge cycles through all active limits with color-coded labels so you always know which one you're looking at. Click the icon to open a detailed popup with progress bars, reset times, and exact percentages for every limit. Pin the extension to your toolbar to keep usage percentages always visible. USAGE LIMITS TRACKED - 5-hour (session) limit - 7-day overall - 7-day Sonnet - 7-day Opus - 7-day OAuth Apps - 7-day Cowork - Model-scoped limits (e.g. weekly Fable) - Usage Credits (limit, used, balance, promo credit expiry) FEATURES - Color-coded badge cycling through all active limits - Badge mode — cycle through selected sources or show active only - Per-source badge visibility — toggle switch on each card to show/hide that metric from the badge cycle, preference persists across sessions - Active limit indicator — shows which limit is currently constraining you - Severity warnings — visual border highlights when limits approach critical levels - Detailed popup with progress bars and reset countdowns - Collapsible cards — chevron icons to expand/collapse, layout persists across sessions - Multi-currency support — displays amounts in your account's currency - Prepaid credit balance with expiry countdown and promo tranche breakdown - Usage Credits card with spend limit, used amount, and cap - Model-scoped limits automatically detected from API - Lab toggle (flask icon) — reveals unknown/undocumented API codenames; if you recognise what any of them represent, please report it on GitHub - Configurable auto-refresh interval (2, 5, 10, 15, or 30 min — default 5 min) - Manual refresh button - Raw API data view for debugging - Uninstalling the extension will open a short feedback survey to help improve the extension HOW IT WORKS The extension reads usage data from claude.ai using your existing browser session. No API key needed. No data is sent to third parties — everything stays local in your browser. REQUIREMENTS - You must be logged into claude.ai - Works in Chrome and Chromium-based browsers (Edge, Brave, etc.) TESTED PLANS Tested on Pro plan. If something doesn't work on your plan, please open an issue on GitHub. The popup has a "Show raw data" toggle at the bottom that reveals the raw JSON responses — including these in your issue will help with debugging. SOURCE CODE https://github.com/mrpesho/claude-usage-monitor This extension uses Claude.ai's internal API endpoints (not Anthropic's public API). It may stop working at any time if those endpoints change. Not affiliated with or endorsed by Anthropic. Built with Claude Code.
Sep 7, 2026
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