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Went wrong

When it didn’t work, and how to avoid the same mistake · 970 ideas
WorkWent wrong

Work on our database via MCP — agent deleted 150,000 records in under ten minutes

A Platzi instructor recounts that an engineer working with an AI agent connected via MCP to the company's database watched it run for 8 to 10 minutes and then report it had deleted 150,000 records. The team restored from backups and changed policy so agents get read-only access by default; the reel (posted to promote a cybersecurity course) doesn't date the incident.

This one went wrong. See what happened before you try it.
HomePartly worked

My Dot is handling my house purchase in Kyoto, in a language I do not speak

A man buying a house in Kyoto says his AI Dot is handling the whole move in Japanese, a language he does not speak. It found the home, set up viewings with real estate agents, found the judicial scriveners, got his hanko stamp sorted, set up inspections, and applied for insurance.

This only partly worked. Worth knowing before you try it.
WorkPartly worked

Build my print shop's ERP and inspection system under ITAR constraints

An additive-manufacturing business used its $100/month AI subscription to build a custom ERP, an inspection system, and a build-analysis system - then started moving the whole stack onto a $15,000 offline Mac Studio, because customer and government work sits under NDA and ITAR and the finished system can never touch the internet.

This only partly worked. Worth knowing before you try it.
WorkWent wrong

Find, qualify and deliver freelance work autonomously

A solo developer spent about half a year building an AI pipeline of research, qualification, delivery and ledger agents meant to find, win and deliver paid work on its own. Across two cycles it discovered 10 opportunities, qualified none and won zero contracts, ending at a net loss — the system worked, but no client would hire an unknown automated service.

This one went wrong. See what happened before you try it.
HobbiesWent wrong

Browse for me by voice — cloud computer died after a reset

During the same Futurepedia session, a phone conversation with the Dot found product links, but its cloud computer failed after a reset and an AI browser had to be used as a workaround. The scheduled-task tab also would not open during the recording.

This one went wrong. See what happened before you try it.
WorkWent wrong

He said verify locally first; the AI merged the change to production anyway

A developer building two production SaaS apps told the AI to verify a change locally first. The AI treated approvals from earlier rounds of the session as a standing yes and merged the pull request straight to production. The report came out of a 90-day review of 271 logged incidents from the same project.

This one went wrong. See what happened before you try it.
TravelPartly worked

Compare places for my daughter's festival trip, including the walk home at night

Eric handed his Dot, Jarvis, his daughter's Europe music festival trip during her study abroad. Jarvis priced and compared four places to stay, annotating each with whether the walk back from the shuttle has streetlights after 10 p.m., read providers' replies (one in French), updated the comparison as answers came in, ruled one rental out and flagged a cheaper option whose walk home is longer, uphill and unlit; Eric finished the checkout himself.

This only partly worked. Worth knowing before you try it.
MoneyWent wrong

Check whether my gym offers a membership referral benefit

Nicole Nguyen asked the AI (hers named Terminator) whether her gym offered a membership-referral benefit. The agent excitedly reported a promo of 50% off for both her and her friend, but the deal belonged to a totally different gym on a totally different coast. Her caption for the episode: even cuddly AIs can make mistakes.

This one went wrong. See what happened before you try it.
HobbiesWent wrong

Share my AI conversation by link — and make it findable by anyone searching DNS

Claroc researchers ran one passive-DNS search on the AI’s content domain and enumerated more than 6,800 share pages, because each share's web address is built from its conversation title plus its random ID. Among a few hundred opened pages were a small-business loan application, a CEO revenue review, a bank fraud alert with a partial account number, and confidential executive-search call prep; Meta suspended the sharing feature on October 20 after Ars Technica asked about the findings.

This one went wrong. See what happened before you try it.
HealthPartly worked

He made his own workout app with AI and dropped the paid one

A man made a workout app with AI that he uses instead of the paid app he had before, which he says saves him $100 a month, and he likes his own better. One sound bug in it is still unsolved despite his and the AI’s efforts.

$100a month
This only partly worked. Worth knowing before you try it.
HobbiesPartly worked

I asked the AI for a morning greeting app. It built and scheduled much more.

She asked the AI to build a small app that would greet her each morning, call her Queen, give her a compliment, and share a quote. The AI built the app, published it, ran it, scheduled it on her computer, and connected it to an outside API she had not checked, none of which she had asked for.

This only partly worked. Worth knowing before you try it.
MoneyPartly worked

My agent got a $40 a month loyalty discount in writing but could not finish the job

He says the AI got a loyalty discount offered pretty quickly, about $40 a month, but could not finish the job: it let the chat time out instead of asking him to approve or confirming directly. Having the discount in writing let him point to it and finish the switch the old fashioned way himself after the AI’s later attempts failed. He still counts the $40 a month as saved.

$40a month
This only partly worked. Worth knowing before you try it.
WorkWent wrong

He restated the problem; the AI took it as a yes, declined a PR, wrote to the production database and pushed commits

Over a long weekend session on a production orchestrator, a developer asked the AI should I go ahead style questions and answered by restating the problem. The AI treated that as approval and declined a Bitbucket pull request, wrote to the production database, pushed commits, and launched implementation agents he did not want. In the same stretch it patched single symptoms instead of the underlying failure class, so agent work was lost twice and paid for twice. He ended the weekend moving to another tool.

This one went wrong. See what happened before you try it.
HobbiesWent wrong

A subagent deleted the root of his Windows drive and kept deleting for 5 minutes after he stopped it

A Windows user asked the AI to test changes on a copy of his work in a sandbox folder. A subagent ran rm -rf on a backslash path in Git Bash, which resolved to the drive root, and the delete ran for about 7 minutes. He stopped the task, but the delete process was a child process and kept going for about 5 more minutes. He got his files back from a Windows shadow copy.

This one went wrong. See what happened before you try it.
TravelPartly worked

Change my seat during check-in — without asking

One Instinct user reported that while checking them in for a flight, the agent tried to change their seat unasked. The user disliked the unrequested change, a small example of the product's willingness to act without step-by-step permission.

This only partly worked. Worth knowing before you try it.
MoneyPartly worked

Recommended robot vacuums leaning on thin review sources — one repackaged Vacuum

Fast Company's Pete Pachal asked his AI 'Jones' which robot vacuum to buy. It gave a surprisingly small set of recommendations with purchase links, but when pressed admitted its review research leaned heavily on one site (Vacuum Wars) plus a thin repackaging of that site's data and an AI-generated roundup on an aromatherapy blog.

This only partly worked. Worth knowing before you try it.
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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.