Show HN: Usage4Claude – Monitor Claude AI usage from macOS menu bar (github.com)

Usage4Claude is a lightweight native macOS menu-bar app that provides real-time monitoring of your Claude AI 5‑hour usage quota across all Claude platforms (web, Claude Code CLI, desktop and mobile). It displays percentage or icon-based indicators in the menu bar, auto‑changes colors (green/orange/red) as you approach limits, shows precise reset time, and offers smart adaptive refresh (1/3/5/10 min modes) to cut unnecessary API calls while keeping active sessions responsive. For anyone who juggles multiple Claude clients or runs automated workflows, it’s a simple way to avoid unexpectedly hitting quota caps. Technically it’s built in Swift 5 with a SwiftUI+AppKit hybrid UI, MVVM architecture, Combine for reactive flows and URLSession for networking. It stores credentials locally in macOS Keychain, uses App Sandbox, keeps all data local (no telemetry), and is fully open source on GitHub under MIT. The app is very lightweight (<0.1% CPU idle, ~20MB RAM), requires macOS 13+, and supports Intel and Apple Silicon. Initial setup requires copying your Organization ID and sessionKey from the browser’s network requests into the app (detailed guide provided). Future enhancements listed include OAuth/7‑day history, notifications, widgets and multi‑platform clients.