Install ClaudeMeter
One brew command. macOS 12+. Browser extension supplies the claude.ai session so there is no cookie paste.
1. Install the menu bar app
ClaudeMeter ships as a Homebrew cask. If you do not have Homebrew, grab it from brew.sh first.
The cask pulls a signed, notarized build. If Gatekeeper warns on first launch, open System Settings → Privacy & Security and allow ClaudeMeter.
2. Launch and sign in
Open ClaudeMeter from Applications. The C| icon appears in the menu bar. It will prompt you to install the browser extension so it can read your existing claude.ai session.
3. Install the browser extension
The browser extension reuses whatever claude.ai session you are already signed into. Install it from the ClaudeMeter releases page, pin it to your toolbar, and visit claude.ai once. The menu bar popover should light up within a minute.
- Chrome, Arc, Brave, and Edge are supported today.
- Safari is not yet supported; Safari requires Full Disk Access for the shared cookie jar we need.
- You can still paste a session cookie manually if the extension is unavailable on your browser.
4. Verify numbers match
Open claude.ai/settings/usage in the same browser, compare the percentages to the ClaudeMeter popover, and confirm they match. ClaudeMeter refreshes once per minute by default.
Uninstall
brew uninstall --cask claude-meter removes the app. Remove the browser extension from the extensions page. ClaudeMeter stores no state on disk beyond the cached session cookie it received from the extension.