Arken Limit Monitor — Usage Meter for Claude

Unofficial. Not affiliated with, endorsed by, or sponsored by Anthropic.
A local browser widget that shows your own Claude.ai usage limits — session, weekly, spend and credits — with reset countdowns and an alert before you hit the wall.

   

Experimental. It reads Claude's own usage-page data using your existing browser session, so it can break if Claude changes that page.

What it shows

Current session	5-hour window as a ring gauge, with a live "resets in 1h 21m" countdown
Weekly limits	All models, plus a row for each per-model limit your plan exposes — rename them yourself
Extra usage & spend	Month-to-date spend against your own spend limit
Usage credits	Current balance, promotional credits, and the dates they expire
Threshold alerts	An optional desktop notification when you cross a level you pick (default 90%)
Collapses away	One click folds it into a pill docked at the bottom edge — drag it anywhere

Every reading, labelled

Install

Option A — download the packaged extension (recommended)

1. Download ArkenLimitMonitor-extension.zip from the latest release — or from arkenapps.com/arken-limit-monitor — and unzip it.
2. Open chrome://extensions (or edge://extensions).
3. Turn on Developer mode (top-right).
4. Click Load unpacked and select the unzipped ArkenLimitMonitor folder (the one with manifest.json in it).
5. Open or refresh claude.ai — the widget appears bottom-right.

Option B — load straight from the source

git clone https://github.com/arkenapps/ArkenLimitMonitor.git

Then Load unpacked and select the extension/ folder from the clone. Same code, no download step — handy if you want to read it before you run it.

Works on Chrome, Edge, Brave, Arc, Vivaldi and other Chromium browsers on Windows, macOS and Linux. (Safari uses a different extension format — see Known limitations.)

Settings

• Refresh every — minutes between polls (minimum 2), plus a manual refresh button
• Alert at — threshold % for the desktop notification
• Org ID — auto-detected; paste manually only if detection fails
• Model names (in order) — comma-separated names for the weekly per-model rows if they show as "model 1 / model 2" (e.g. Opus, Fable)
• Show credits — show or hide the usage-credits panel
• Dock to bottom right — resets the widget to its default position
• Copy debug info (redacted) — percentages, reset times and credit figures only, with no account or organization identifiers, for reporting issues

Privacy

This extension runs locally in your browser. It reads only your own usage figures — the same numbers Claude's own settings page shows you — using the session you are already signed into.

It does not ask for a username, password or API key. It does not read or store authentication cookies. It does not collect, transmit, sell or share any data. There is no external server and no telemetry of any kind. Your settings live in chrome.storage.local on your own machine.

Full policy: arkenapps.github.io/ArkenLimitMonitor/#privacy

Known limitations

• Depends on an undocumented usage endpoint; a Claude update may require a patch. It fails quietly and shows the last known figures rather than breaking the page.
• Shows whatever limits your plan exposes (Free / Pro / Max differ).
• The usage-credits panel only appears if your account exposes credit figures.
• Safari isn't supported by "Load unpacked"; it would need a Safari Web Extension conversion via Xcode on macOS.

Changelog

2.4.1 — Store-compliant listing name and a disclaimer-first description. Plainer in-widget statement of what is read and what is never touched.

2.4.0 — The collapsed pill docks to the bottom edge instead of drifting to the middle in Chrome, and can be dragged while collapsed; positions are stored bottom-anchored so the card expands upward. The pill's Weekly figure now reads only weekly buckets — extra-usage and spend no longer count as "weekly 100%". Added the usage-credits panel and a Donate button. Percentages stay correct when a spend bucket goes over 100%.

Contributing

Issues and pull requests are welcome. If you're reporting a wrong number, the Copy debug info button in settings gives you everything needed to diagnose it without exposing your account.

Support development

Free and open source. If it saves you from a mid-task cutoff, a small tip keeps it maintained — no nags, no locked features.

• Buy Me a Coffee: https://buymeacoffee.com/arkenstone
• Crypto
  • BTC — bc1q38s0238vt0qmy20e67v8yh563gd569detagr04
  • ETH (ERC-20) — 0x3Ee64cde0220D32998B442caADdDF8384309befc
  • BNB (BEP-20) — 0x3Ee64cde0220D32998B442caADdDF8384309befc
  • USDT (TRC-20) — TKabLe5AuCATij3u1zx116W5zHLb6eD5Um
  • USDC (Solana/SPL) — 9v64bkPMaM1KFFGGe83U7Mv3mBWTGW29qz4hXE9DNL2v
  • SOL — 9v64bkPMaM1KFFGGe83U7Mv3mBWTGW29qz4hXE9DNL2v
  • XRP — r4RKyUK5sJfFrjXBFjYuwpJ2rnerPdDDpW

Donate page with QR codes: https://arkenapps.github.io/ArkenLimitMonitor/#donate

License

MIT © Arken Apps. See LICENSE.

"Claude" is a trademark of Anthropic, used here only to describe compatibility.