A real-time Claude AI usage monitor built for power users who need to know exactly where they stand.
Klaude Fuel Gauge is a lightweight macOS menu bar app that monitors your Claude AI message quota in real-time. It silently polls the Claude API in the background and displays a color-coded fuel gauge icon — so you always know, at a glance, how much of your session and weekly allowance remains.
No browser tab open. No manual refreshing. Just a tiny icon in your menu bar that tells the truth.
There are other ways to track Claude usage — VS Code extensions, Chrome browser add-ons, terminal scripts. They all work, within their context. But if you write in one app, code in another, and research in a third, none of them follow you. Klaude Fuel Gauge lives in the macOS menu bar, so it's always visible regardless of which app has focus. One glance. Every app. Always on.
Klaude Fuel Gauge auto-detects your Claude plan and sets the correct limits automatically. You can also override them manually.
| Plan | Session (5h) | Weekly (7d) |
|---|---|---|
| Claude Pro | 45 messages | 240 messages |
| Claude Max 5× | 225 messages | 1,200 messages |
| Claude Max 20× ★ | 900 messages | 4,800 messages |
Klaude Fuel Gauge reads your existing Claude session cookies from the system cookie store — the same ones your browser uses when you're logged into claude.ai. It then calls the Claude usage API to fetch your current consumption and displays it as a percentage.
Your credentials never leave your Mac. There are no third-party servers, no accounts to create, and no data collection of any kind. It's just your Mac talking to Anthropic's API on your behalf.
One detail worth knowing: Claude's session limit is a rolling 5-hour window, not a fixed daily reset. Messages you sent more than 5 hours ago gradually free up again. Klaude Fuel Gauge tracks this in real time, so the number you see always reflects what you actually have available right now — not what you started with at the top of the day.
The menu bar icon changes colour as your usage climbs, giving you instant feedback without needing to open anything.
Klaude Fuel Gauge is a native macOS application built with SwiftUI and Apple's MenuBarExtra API. It uses Combine for reactive state management, Network framework for connectivity monitoring, and Sparkle for automatic updates.
Right now, Klaude Fuel Gauge is built exclusively for Claude. The integration goes deep — reading native session data and speaking directly to Anthropic's API — so supporting other services isn't simply a matter of flipping a switch.
That said… we're not exactly sitting still. Let's just say the name Klaude wasn't chosen entirely by accident, and what we're quietly working on next might make that silent 'K' start to make a lot more sense. Watch this space. 👀
Completely. Klaude Fuel Gauge reads your existing session cookies locally — the same ones your browser already holds — and uses them to query Anthropic's API directly from your Mac. Your credentials never touch a third-party server, and we collect zero data of any kind.
Claude Pro, Max 5×, and Max 20× are all supported. The app auto-detects your tier on first launch — no manual setup needed. You can also override limits manually if you'd prefer.
Free alternatives exist — VS Code extensions, Chrome browser add-ons, command-line monitors — and they're genuinely useful if you live inside a single tool. But they only show you your quota when that specific app is in focus. If you use Claude across multiple apps throughout your day, you're blind the moment you switch context.
Klaude Fuel Gauge is a native macOS app. It lives in your menu bar, which means it's always visible, regardless of which app you're in. It's also built with SwiftUI — not a browser extension or an Electron wrapper — so it's fast, lightweight, and feels like it belongs on your Mac.