Cursor runaway-spend incidents

2 documented incidents involving Cursor APIs or billing. Each one is sourced and maps to the rule that would have stopped it.

IncidentLossCauseYearSource
Developer spent $11,922 on Cursor in under four weeks $11,922 Unattended sessions 2026 dev.to (Jay Frey) ↗
Founder spent $638 on Cursor AI coding in six weeks $638 Retry loops 2024 Hacker News (nthypes) ↗

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