How I added hard spending limits to AI agents (and why logging isn't enough)
If you've built an AI agent that calls paid APIs, you've probably I wanted something harder: a policy that blocks the agent before LangChain callbacks, OpenAI traces, CrewAI logs — they're all Even interrupt-based approaches like HumanInTheLoopMiddleware Treat budget as a tool the agent calls before any paid operation: python @function_tool def check_spend(amount: float, category: str = None) -> str: """ Check whether a planned spend is within budget. Returns 'approved' or 'deni
