Claude Usage Monitor

About

Never get surprised by a Claude usage limit again.

Claude Usage Monitor adds a small badge to your toolbar showing your current usage percentage, and a popup with full detail on all your active limits — updating automatically in the background.

WHAT IT SHOWS
• 5-Hour Limit — your short-window usage bar with time-to-reset countdown
• 7-Day Limit — your rolling weekly usage across all models
• Claude Design — weekly usage for Claude's design/visual features
• Extra Usage — paid overage tracking with credit balance and auto-reload status

FEATURES
• Live badge on the toolbar icon showing your current usage %
• Auto-refreshes in the background on a schedule you choose (1–30 min)
• Desktop notification when usage hits your chosen alert threshold (40–90%)
• 4 built-in themes: Vintage Dark (default), Vintage Light, Dark, Light
• Toggle each section on or off from the settings page
• Works entirely offline — no account, no signup, no external server
• All data stays on your device

HOW IT WORKS
The extension reads your usage data directly from the claude.ai API using your existing browser login session. No passwords or tokens are ever touched. Data is stored locally in Chrome storage and never sent anywhere.

You must be logged in to claude.ai for the extension to display data. Visit claude.ai/settings/usage once after installing to initialise the data — after that it refreshes automatically.

PRIVACY
No data is collected, transmitted, or shared. Everything stays on your device. See the full privacy policy linked below.