Claude Usage Tracker

A Chrome extension that displays your Claude.ai usage limits at a glance - no more navigating to the website just to check your quota.

Features

• View your 5-hour rolling window usage
• View your weekly usage limit
• View Opus-specific limits (if applicable)
• Clean, dark UI matching Claude's aesthetic
• Real-time data from your Claude.ai session
• No API keys required - uses your existing browser session

Installation

From Source (Developer Mode)

1. Clone or download this repository
2. Open Chrome and go to chrome://extensions/
3. Enable Developer mode (toggle in top-right)
4. Click Load unpacked
5. Select the extension folder from this repo

Setup

1. Log in to claude.ai in Chrome
2. Click the extension icon
3. Click Settings
4. Enter your Organization ID (find it at claude.ai/settings/account)
5. Click Save

How It Works

The extension uses your existing Claude.ai browser session to fetch usage data from the same API endpoint that powers the Claude.ai settings page. No API keys or additional authentication required.

Privacy

• No data is collected or transmitted to third parties
• Your Organization ID is stored locally in Chrome's extension storage
• All API calls go directly to claude.ai using your existing session cookies

Requirements

• Google Chrome (or Chromium-based browser)
• Active Claude.ai account (Free, Pro, or Max)
• Must be logged in to claude.ai

License

MIT License - feel free to modify and distribute.

Credits

Built with assistance from Claude.