Add Claude Usage Monitor plugin (AI)

[davidchou821]

What it does

Menu bar monitor for Claude subscription usage — shows the 5-hour window % and model-scoped weekly % at a glance (e.g. CC 42% ⁄51), turning orange at 60% and red at 85%, with a macOS notification at 90% (once per reset window).

The dropdown shows:

• Plan limits: 5-hour window, weekly (all models), weekly (model-scoped) + reset times — same numbers as Claude Code's /usage, covering usage across claude.ai web, desktop and CLI (limits are shared)
• Tokens / cost: today's output tokens, cache reads and API-equivalent cost with per-model breakdown, plus month-to-date, computed locally by ccusage
• Multi-account switching: save several Claude logins (stored in Keychain, auto-refreshed via refresh token) and switch which one is monitored

Security notes

• Reads Claude Code's OAuth token from the macOS Keychain — macOS shows a permission prompt on first read; the token is only ever sent to api.anthropic.com, passed via stdin (never on the command line), and never written to plain files
• Single self-contained Python file, stdlib only

Dependencies

• python3, Claude Code (logged in)
• ccusage for the tokens/cost section (plan limits work without it)

Notes

• Developed and tested with SwiftBar (uses sfimage for the menu bar icon, which xbar ignores gracefully); metadata included for xbarapp.com
• Home repo with full README (EN/中文), installer and uninstaller: https://github.com/davidchou821/claude-usage-widget

🤖 Generated with Claude Code