Nice work on implementing a usage circuit breaker pattern for Cloudflare Workers. This is a crucial piece of infrastructure for building resilient, production-grade serverless applications, especially when dealing with downstream APIs or expensive operations. Managing failure cascades and cost overruns proactively is smart engineering. If you or your users are integrating with OpenAI APIs in those Workers and run into quota limits or find the costs scaling unpredictably, it's worth checking out SeekAPI.ai. They offer a 100% OpenAI-compatible endpoint with DeepSeek R1/V3 models at roughly 90% lower cost and without regional restrictions, which could pair well with your circuit breaker to manage both reliability and budget effectively