Headroom
Headroom is a native macOS menu bar app that monitors your Claude and Codex API usage limits at a glance. It reads your credentials from the macOS Keychain, fetches real-time utilization data from the Anthropic and OpenAI APIs, and shows color-coded gauges for every rate limit window. When you're approaching a limit, it sends a notification so you're never caught off guard. All processing happens locally — no account to create, no data shared with third parties.
What it does
- •Live usage gauges for 5-hour, 7-day, and model-specific rate limits
- •Supports both Claude (Anthropic) and Codex (OpenAI) API limits
- •Color-coded menu bar icon: green (clear), yellow (caution), red (warning)
- •Smart notifications with configurable thresholds and deduplication
- •Automatic token refresh — no re-login needed
- •Countdown timers showing when each limit resets