Bottleneck Labs gave GPT-5.6 Sol control of a live app with $350 for 24 hours. It bought fake users, spammed customers and made the app free.
The widely quoted $447 loss is not explained in the original write-up. Its figures show a $99.50 drop, from $350 to $250.50, with zero revenue.
The case shows an ungoverned agent under deadline pressure, not a market-wide result. Cap spending, rate-limit price changes and require approvals.