Claude Usage Bar Add to Chrome

Free Chrome extension

See how much Claude you have left.

Claude Usage Bar puts your 5 hour session and your weekly limits in a slim bar under the chat box. You can see where you stand before you run out, instead of finding out halfway through a thought.

Add to Chrome View the source

Nothing to set up. No API key, no token, no second login. If you are signed in to Claude, it already works. Runs on Chrome, Edge, Brave, Arc and Opera.

Sample readout

Try it

This is the actual bar, running on made up numbers.

Everything below the browser frame is the extension's real markup and styling. Drag the sliders and it behaves the way it would on your account. Click the extension icon in the toolbar to open the popup.

Claude claude.ai/chat
How much usage do I have left?
Claude I have no idea, honestly. Look just under the box, that little bar is the extension keeping track for you.
Reply to Claude...
Claude Opus 5

A pretend Claude window. The extension inside it is real.

Settings the same page the extension ships with

Turn the extension on or off
Show your usage on claude.ai.
Design
Choose how your usage shows on claude.ai.
Show usage on the toolbar icon
A colored number on the extension icon, readable from any tab.
Badge shows

Demo knobs your account fills these in for real

42%
68%
12%
Account includes Opus
The Opus row appears on its own when your plan has one.
Claude appearance
The bar follows the theme you use on claude.ai.
Keyboard shortcut
Hides and shows the bar. It works on this page too, try it.

What it does

Small extension, few opinions, no nagging.

Colors you read without reading

Blue while you have room, orange once you pass 30 percent, red past 80. After a day you stop reading the number and just glance.

Two ways to wear it

A full bar under the chat, or a compact readout tucked into the composer toolbar next to the plus button. Pick whichever gets in your way less.

resets in 3h 12m

A countdown to the reset

Every window shows how long until it refills, so you can decide whether to wait it out or switch to a lighter model for a while.

68

On the toolbar icon too

Turn on the badge and your usage sits on the extension icon as a colored number, visible from any tab, not just from Claude.

Ctrl + Shift + U

One key to hide it

Hide and show the bar without opening anything. If the shortcut clashes with something else, rebind it in your browser's shortcut settings.

work / personal

More than one account

If you belong to several organizations, the extension finds the one with your real usage, and you can override the choice from Settings.

How it works

It asks Claude the same thing Claude asks itself.

your session cookie

It uses the session you already have

The extension calls the same endpoints claude.ai calls for its own usage screen, signed in as you by the cookie already in your browser. There is nothing to paste in.

chrome.alarms

It refreshes on a timer

A five minute alarm keeps the numbers current even when no Claude tab is open. When a tab is open, that tab does the fetching and the bar updates every minute while you look at it.

storage.local

It keeps everything on your machine

Your preferences and the last numbers it saw live in your browser's local storage. There is no account, no server on our side, and nothing to sync.

GET /api/organizations
GET /api/organizations/{id}/usage
five_hour   seven_day   seven_day_opus

Privacy

The short version: it does not phone home.

The only host the extension ever talks to is claude.ai, and that is your own account. The code is public if you would rather check than take our word for it.

Read the privacy policy

  • ✓It never reads, stores or sends your conversations.
  • ✓It sends nothing to any third party server. There is no analytics and no tracking.
  • ✓It never asks for an API key, a token or a password.
  • ✓Uninstalling it removes everything it stored.

Install

Two ways in, both take a minute.

From the Chrome Web Store

The easy one. Reviewed, signed and updated automatically.

Add to Chrome

Works in any Chromium browser: Chrome, Edge, Brave, Arc, Opera.

Or run it from source

For anyone who would rather read the code first.

  1. Download or clone the repository.
  2. Open chrome://extensions
  3. Turn on Developer mode, top right.
  4. Click Load unpacked and pick the claude-extension folder.
  5. Open or refresh claude.ai.

Questions

The things people ask.

The bar says 0 percent and I know that is wrong.

You are probably in more than one organization, and the extension locked onto the wrong one. Open Settings, click Change next to Account, and pick the one showing your real numbers. Use automatic puts it back the way it was.

Do I need an API key or a paid plan?

Neither. It reads the usage of whatever Claude account you are already signed in to, free or paid. There is nothing to buy and nothing to paste in.

Does it slow Claude down?

No. It makes one small request every few minutes and draws a few divs. It never touches the conversation itself.

The bar shows a dash, or an exclamation mark.

A dash means it has no numbers yet, usually because you are signed out. An exclamation mark means the request failed. Refreshing claude.ai fixes most of it. If it sticks around, Claude may have changed something on their end.

Can this break?

Yes, and it is worth saying plainly. The usage endpoints are internal to Claude and undocumented, so Anthropic can change them at any time without warning. If that happens the bar goes quiet until the extension is updated.

Can I change the keyboard shortcut?

Open chrome://extensions/shortcuts and rebind it there. The default is Ctrl and Shift and U, or Command and Shift and U on a Mac.