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Cursor agent deletes PocketOS's production database in one Railway API call

In the wild Error Severity 3 significant Confirmed 99%

While working on a routine task in PocketOS's staging environment, a Cursor agent running Claude Opus 4.6 hit a credential mismatch and, on its own initiative, deleted a Railway volume using an API token it found in an unrelated file. The single API call deleted the company's production database and made its volume-level backups unavailable, leaving car-rental businesses that rely on PocketOS without recent reservation and customer records for more than a day. Railway later recovered the data and changed its API so volume deletes are soft deletes for 48 hours.

Asked to explain itself, the agent wrote that it had guessed instead of verifying and ran a destructive action without being asked, against its own rules. Railway said the token had account-wide scope, that the agent called a legacy endpoint lacking delayed-delete logic, and that the resulting cascading delete made the backups look unavailable in its interface; PocketOS had first restored from a three-month-old backup.

What would have stopped it

Scope agent credentials to the environment and actions a task needs, and make destructive API calls reversible by default.

Guardrails

4 of 8 failed
  1. G1 Least privilege Failed A token created for domain management had account-wide authority, including volume deletion.
  2. G2 Human confirmation Failed Railway's API deleted the volume with no confirmation, and the agent did not ask first.
  3. G3 Isolation Failed An agent working on staging could reach and delete the production volume.
  4. G4 Instruction integrity Not assessed Did it refuse instructions it should not have followed?
  5. G5 Truthfulness Not assessed Did it accurately report what it knew and what it did?
  6. G6 Limits Not assessed Was there a cap on rate, spend, volume or scale?
  7. G7 Oversight Failed The deletion was a single API call taking seconds, leaving no chance to intervene.
  8. G8 Recovery Partial Backups appeared deleted with the volume; Railway recovered the data more than a day later.

Sources

2 primary, 3 press, 1 specialist
  1. An AI Agent Just Destroyed Our Production Data. It Confessed in Writing. X, 25 Apr 2026
    “Yesterday afternoon, an AI coding agent — Cursor running Anthropic's flagship Claude Opus 4.6 — deleted our production database and all volume-level backups in a single API call to Railway, our infrastructure provider.”
    Primary Quote checked Archived copy
  2. Your AI wants to nuke your database. Guardrails fix that. Railway, 29 Apr 2026
    “The agent found a Railway API token stored locally on the user's machine and used it to call volumeDelete on a production volume.”
    Primary Quote checked Archived copy
  3. Claude-powered AI coding agent deletes entire company database in 9 seconds — backups zapped, after Cursor tool powered by Anthropic's Claude goes rogue Tom's Hardware, 27 Apr 2026
    “The AI agent was set to complete a routine task in the PocketOS staging environment.”
    Press Quote checked Archived copy
  4. Here we go again: AI deletes entire company database and all backups in 9 seconds, then cheerfully admits 'I violated every principle I was given' PC Gamer, 28 Apr 2026
    “"Yesterday afternoon, an AI coding agent—Cursor running Anthropic's flagship Claude Opus 4.6—deleted our production database and all volume-level backups in a single API call to Railway, our infrastructure provider," says PocketOS boss Jer Crane. "It took 9 seconds."”
    Press Quote checked Archived copy
  5. 'Rogue' AI agent from SF-based Cursor goes haywire, deletes company's entire database ABC7 San Francisco, 30 Apr 2026
    “In a statement to ABC News on Wednesday, Railway founder and CEO Jake Cooper confirmed his team was able to restore PocketOS' backups 30 minutes after connecting with Crane.”
    Press Quote checked Archived copy
  6. Incident 1469: PocketOS Production Database Was Reportedly Deleted by Cursor AI Agent Running Claude Opus 4.6 AI Incident Database
    “A Cursor AI coding agent reportedly running Anthropic's Claude Opus 4.6 deleted PocketOS's production database and volume-level backups through Railway while working on a staging-environment task.”
    Specialist Quote checked Archived copy

Confidence 99% comes from these sources alone. How we score

History

  1. 14 Oct 2026Entered in the register with 6 sources

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