The three false beliefs that cost agent teams money

I've talked to over 200 teams running autonomous agents in production. Three beliefs come up in almost every conversation — and every team that held them eventually paid for it.

False belief #1: "I'll catch it in the morning"

The $47,000 overnight runaway loop started at 11 PM and burned until 7 AM. The engineer woke up to a bill that exceeded their monthly cloud budget by 47x. By the time you "check in the morning," the loop has run for hours. Unattended agents need real-time controls, not dashboard checks.

False belief #2: "The provider's monthly cap will stop it"

OpenAI and Anthropic monthly caps are soft ceilings — they limit the number of tokens you can consume, not the dollars you can spend per hour. A $200/month cap doesn't stop $200 of spend in 20 minutes. Worse, provider caps only cover API costs. They don't touch cloud provisioning ($6,500 AWS bill), SaaS purchases, or on-chain transfers. A provider cap is an accounting setting, not a spend control.

False belief #3: "My agent would never do that"

Every documented incident in our database happened to someone who believed their agent would never do that. The Replit DB deletion during a code freeze? A trusted coding agent. The Cursor fake-policy debacle? A support bot that "always worked fine." Chevrolet's $1 Tahoe? A dealership chatbot. The agent doesn't need to be malicious — it just needs to be unbounded. Browse all 34 documented incidents →

What replaces these beliefs: one deterministic API call before the transaction. $99/mo. Start here →