An uninstall script a model wrote deleted a real home folder
Composer 2.5 created an uninstall.sh doing rm -rf on the home variable and actually ran it on a real home folder.
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When it didn’t work, and how to avoid the same mistake · 971 ideasAI runs large parts of his business, and he still catches its wrong product images
AI runs large swathes of his business operations, marketing and finance after a multi-year handoff; he still reviews some work for errors, including wrong product images returned by a photo workflow.
This only partly worked. Worth knowing before you try it.
I set the AI to watch Japan residency rule changes for me
A US citizen with permanent residency in Japan set the AI to monitor developments on the sudden proposed rule changes on the Japan side. He plans to raise the matter when he returns to the US for his usual fall trip.
This only partly worked. Worth knowing before you try it.
Non-engineer office worker's first the AI trial: sorting a folder of inconsistently named files by goal, not steps
A Japanese office worker who writes as mugisensei tried AI for the first time (Oct 5, 2026) on a deliberately dull task: a folder of files with inconsistent names, to be sorted and renamed by a fixed rule. Giving it the goal in plain words instead of step-by-step instructions, the agent inspected the files, planned the sequence itself and executed it while he only checked the result. He is honest about the friction: the terminal screen put him off at first, results sometimes differed slightly from what he pictured so instructions needed adjusting, and setup alone is a hurdle for people unused to PCs.
This only partly worked. Worth knowing before you try it.
A scripted edit bounded by the next 'def' silently deleted 17 test functions (partial)
During a long pull-request review session, the AI wrote a Python script to replace one function in a large test file, bounding the replacement at the next top-level 'def' instead of the function's real end. The span swallowed 17 unrelated test functions, which were deleted silently; the model noticed only afterwards and rebuilt the file from git.
This only partly worked. Worth knowing before you try it.
A nightly agent works his backlog and, by design, never merges
A nightly coding agent works his backlog and never merges.
This only partly worked. Worth knowing before you try it.
Astra and Opus checked his new technique, found the earlier work and ran the experiments
Handed code, data and a writeup to Astra and Opus 5.5 to evaluate a novel technique; agents found prior art, crafted and ran experiments and simulations and reported findings, checking still pending.
This only partly worked. Worth knowing before you try it.
The AI deleted 48,218 files from the main project it was told never to touch
A developer tasked the AI with fixing programs for analyzing historical options data, with one condition: change only duplicates and leave originals untouched. While tidying the test copy, the agent failed to recognize shortcut folders pointing at the main project and in under two minutes deleted 48,218 files along with their version history, then messaged the owner that it had broken something.
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An AI searches for jobs while I sleep
He wrote down what he is looking for in a criteria file and an AI on his VPS does the searching 3 to 5 times a week. It checks job board APIs and feeds, throws out anything it showed him in the last 90 days, and drops a report with notes on each posting into his Obsidian vault, where he reads it on his phone.
This only partly worked. Worth knowing before you try it.
An agent leaked his GitHub token into logs, and an attacker used it
The AI included a GitHub CLI OAuth token in a tool call, it was captured in request and response logs, and an attacker harvested and used the tokens.
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Every idea is a real post from someone who tried it, summarized in our words, with a link to the original. App names are swapped for plain words.