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Developer builds lightweight .NET 9 tray app to track GitHub Copilot AI credit usage

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A developer has created CreditMeter, a minimalist Windows system tray application that displays GitHub Copilot AI credit consumption in real time, likening it to a taxi meter. The project was motivated by the observation that agentic coding workflows can quietly accumulate AI usage costs that go unnoticed until billing. Built with C# and .NET 9 Native AOT, the app uses raw Win32 APIs via PInvoke and the GitHub REST API, deliberately avoiding frameworks like WinForms or WPF. Personal access tokens are stored locally using Windows DPAPI, and the project has no backend, telemetry, or heavy dependencies. The source code has been published on GitHub, with the author emphasizing that for small tools, good architecture means knowing what to leave out.

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Developer builds lightweight .NET 9 tray app to track GitHub Copilot AI credit usage · ShortSingh