SpendBar

SpendBar is a native macOS menu bar application designed to provide real-time budget tracking for your Anthropic and OpenAI API expenditures, helping you avoid unexpected invoice totals. Key capabilities include: * Monitor API spend for Anthropic and OpenAI separately or combined * Set custom monthly budgets with customizable reset dates * Visual budget status in the menu bar (green, amber, red) * Receives alerts at 75%, 90%, and 100% of budget * Ensures 100% local data handling and privacy with Keychain integration This application is perfect for developers, product builders, and teams who are actively using pay-as-you-go language model APIs for their projects, internal tools, or experimentation. It directly pulls usage data from each provider's official billing API, giving you an accurate picture of per-token charges before your monthly bill arrives. SpendBar is not for those on flat-rate subscription plans like ChatGPT Plus or Claude Pro, as it focuses on usage-based API costs. Instead, it serves users whose bills include 'API usage' line items, ensuring they can proactively manage expenses and prevent overspending. Setup is quick and simple: generate an admin API key, paste it into SpendBar, set your budget, and let the menu bar provide instant, glanceable financial oversight.