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Incident 1676: Anthropic Claude Opus 5 Coding Agent Reportedly Reset a Live Supabase Production Database During Prisma Migration Work

Description: A developer reported that a Claude Opus 5 coding agent reset a live Supabase database while autonomously repairing a personal project's schema. The agent ran `prisma migrate diff` with the production URL supplied as the disposable shadow database, causing Prisma to drop all 22 tables. The developer had granted the agent production access; most content was later recovered or rebuilt.

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Alleged: Anthropic , AI agent system developers and Large language model developers developed an AI system deployed by Software developers , AI agent system deployers and Alone_Ad_3375 (Reddit user), which harmed Software developers , AI agent system users and Database operators.
Alleged implicated AI systems: Claude Opus 5 , Claude , Claude Code , AI agent systems , LLM-integrated code assistants , Large language models , Supabase , Prisma and Production database servers

Incident Stats

Incident ID
1676
Report Count
3
Incident Date
2026-07-28
Editors
Daniel Atherton

Incident Reports

Reports Timeline

+1
and just like that Opus 5 ultracode wipes the entire database
What went wrong: Opus 5 ultracode wiped a production databaseAn AI coding agent wiped a production database
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and just like that Opus 5 ultracode wipes the entire database

and just like that Opus 5 ultracode wipes the entire database

reddit.com

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What went wrong: Opus 5 ultracode wiped a production database

What went wrong: Opus 5 ultracode wiped a production database

tokenstead.ai

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An AI coding agent wiped a production database

An AI coding agent wiped a production database

exemplar.dev

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and just like that Opus 5 ultracode wipes the entire database
reddit.com · 2026

r/Anthropic - and just like that Opus 5 ultracode wipes the entire database

After hearing a lot about Claude code I decided to try it myself within 10 mins mf wiped my entire database

Vibe coded this project with dumb models like 4.6 sonnet and gemini 3 they never wiped my database but this mf wiped off everything…

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What went wrong: Opus 5 ultracode wiped a production database
tokenstead.ai · 2026

What happened

A developer - self-describing as a "vibe coder" - gave Claude Opus 5, running in Claude Code's ultracode mode, write access to a production Supabase database. The agent then ran a normal-looking migration command:

Copy

prisma …
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An AI coding agent wiped a production database
exemplar.dev · 2026

Summary. In early August 2026, a developer connected Claude Opus 5, running in Ultracode mode, to a production Supabase database with unrestricted access. A migration command intended for a disposable test database instead targeted producti…

Variants

A "variant" is an AI incident similar to a known case—it has the same causes, harms, and AI system. Instead of listing it separately, we group it under the first reported incident. Unlike other incidents, variants do not need to have been reported outside the AIID. Learn more from the research paper.
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