A Chrome extension for claude.ai that shows your live usage limits right in the page, adds a toolbar badge, tracks per-message cost, and can automatically open a fresh session when your usage window resets.
- Live usage bar shows both the 5-hour session window and the 7-day weekly window.
- Toolbar badge shows live session usage %, so you can check usage without even opening a tab.
- Per-message cost tag appears at the end of the response showing how much session that specific message used (at least 2 messages in the chat needed).
- Token estimate shows an approximate GPT-tokenizer-based token count for Claude's most recent reply (an "estimated" count, since claude.ai doesn't expose real token usage to the page).
- Auto-reset mode waits for your current session window to end, then opens a fresh incognito Claude tab automatically.
- Scheduled trigger fires at a specific time on chosen days instead of waiting for a natural reset.
- Notifications for successful triggers and failures.
- Download claude-maxer, then extract it somewhere
- Open Chrome and go to
chrome://extensions. - Turn on Developer mode using the toggle in the top-right corner.
- Click Load unpacked.
- Select the folder you extracted.
- Pin the extension to your toolbar so you can see the usage badge.
- Open claude.ai. The usage bar should appear automatically.
To update later, re-download and click the reload icon on the extension's card in chrome://extensions. After updating, also refresh any open claude.ai tabs.
No data leaves your browser. Nothing is sent to any server other than claude.ai itself (which your browser was already talking to).
Inspired by Claude Counter by she-llac