AI Usage Monitor – Claude Code & Codex

Your Claude Code and Codex quotas at a glance: 5-hour and weekly gauges, reset countdown, toolbar badge and alerts.

Claude Code and Codex quotas, side by side, in one click. AI Usage Monitor shows how much of your AI coding quota you have left, so a limit never takes you by surprise in the middle of a task. WHAT YOU SEE • Claude Code: the 5-hour session and the weekly limit, in one card • Codex: your ChatGPT plan's Codex limit (every window your plan has) • A countdown to each reset • Extra bars when your plan has them: Sonnet and Opus weekly limits, Codex code review • The plan name and the Codex credits ALWAYS IN VIEW • A colour badge on the toolbar icon: the highest of the two, or Claude only, or Codex only • Alerts at 70%, 80%, 90% and 95%, separately for each tool • Refreshed every minute in the background NO SETUP IN MOST CASES • Already logged in to claude.ai and chatgpt.com in Chrome? It just works. • Advanced: paste your Claude Code .credentials.json or Codex auth.json instead. PRIVATE BY DESIGN • Talks only to claude.ai, api.anthropic.com and chatgpt.com, to read your own usage • No server of ours, no analytics, nothing sold or shared • Tokens stay in Chrome's local storage on your computer Interface in English, French, Spanish, Chinese and Hebrew. New in 5.0: Codex support, a new design with tabs (Gauges / Settings & info), language and badge settings, per-tool alerts. Not affiliated with Anthropic or OpenAI. Claude is a trademark of Anthropic; Codex and ChatGPT are trademarks of OpenAI.