Show HN: UsageBar – A Windows tray app for monitoring Claude Code usage (github.com)

A new application named UsageBar has been launched for Windows, providing users with a streamlined way to monitor their Claude Code usage limits right from the system tray. Featuring a color-coded ring icon that visually indicates utilization over a 5-hour time window, the app showcases a comprehensive popup with a live countdown, weekly limits specific to various models, and a detailed 7-day token usage chart. It operates discreetly in the background, consuming minimal system resources, and allows notifications for nearing usage thresholds. The significance of UsageBar lies in its ability to assist developers and AI practitioners in managing their resource consumption efficiently, reducing the risk of unexpected overages while using Claude's services. Key functionalities include an easy-to-navigate settings menu, local data management without external network requests beyond the necessary OAuth usage endpoint, and a focus on user privacy with no telemetry or analytics. Built with Tauri, Rust, and React, UsageBar offers an open-source alternative for application monitoring, reinforcing community-driven development while ensuring compatibility with necessary runtime components like WebView2.