AI agent bankrupted their operator while trying to scan DN42
Practitioner write-up of an AI agent that racked up real-money charges while autonomously scanning DN42 — 702 HN points and the most-cited single-incident agent-failure of the month.
Why it matters
- Concrete worst-case for unbounded agentic spend — far more vivid than the Uber $1,500/month cap.
- Will be cited in every future internal AI-FinOps and procurement discussion.
- Strengthens the case for hard runtime spend limits and policy-aware harnesses (RAMP, ZeroDrift).