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How to Prevent Runaway LLM API Bills: Building an In-Process Circuit Breaker in Python & TypeScript

Every developer building autonomous agents, RAG pipelines, or LLM-powered backends shares the same quiet fear: waking up to an unexpected $300+ bill from OpenAI or Anthropic because of a runaway while-loop. Here is how that scenario usually happens: You deploy an autonomous agent with tool-calling…

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  1. 2026-10-31 12:28 · DEV Community — AI
    How to Prevent Runaway LLM API Bills: Building an In-Process Circuit Breaker in Python & TypeScript

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