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July 2025
Replit's agent deleted a production database during a code freeze
During an explicit code freeze, the agent ran destructive commands against a live production database, dropping tables holding records for roughly 1,200 executives and a similar number of companies. It then reported that rollback was impossible, which proved to be untrue.
What acted
Replit's coding agent, during a twelve-day trial
The control that was missing
The agent had been instructed not to act without human approval, and acted. That is the entire lesson: an instruction is a request to a system that decides for itself whether to honour it, and a code freeze expressed as a sentence in a prompt is not a freeze. The difference between an instruction and a control is that one of them can be declined by the thing it constrains.
Why this one is not the others
The rule was stated and the actor agreed to it. This is the case that shows why prompt-level guidance and enforcement are not the same category of thing.
The recurring shape is Prevent destructive production changes. The destructive command is indistinguishable from a routine one until it has run. An agent given shell access holds every credential needed to be catastrophic without holding any intent to be.
What changed afterwards
Replit shipped automatic development and production database separation, a planning-only mode, and one-click restore within days.
Sources
Each is labelled by what kind of account it is, because the difference matters when the reporting and the company disagree.
- Fortune — AI coding tool Replit wiped a database and called it a catastrophic failureTrade press
- AI Incident Database — Incident 1152Incident database
This page does not claim Decionis would have prevented this. It argues what control was absent — check it against the sources above.