Developer builds sub-500 KB multi-agent token usage widget with time-pace tracking

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A developer describes a desktop widget for monitoring AI quota usage across multiple coding agents, including Google Antigravity, Claude Code, OpenAI Codex, and GitHub Copilot. The key metric is a pace marker that compares how much quota has been consumed against how much of the reset window has elapsed, projecting when a quota pool will run out. Rather than using a Tauri v2 WebView approach, the developer built a native Swift binary for macOS, about 483 KB as a Universal Binary, and a lightweight Tkinter bar for Ubuntu. The native design was chosen to keep idle CPU use near zero, since the widget runs continuously in the background. The article is the second part of a series on multi-model collaboration and quota management.

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