Gift app built to stop giving books people already own
After giving someone a book they already had, he used AI CLI to build a small app for gift ideas. It suggests gifts from his own 5 star book reviews and the other person's Goodreads wishlist.
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Real things everyday people got it to do, and how to try them yourself.
A random mix from the whole library. Shuffle for a new set.
Write my billing refund code — it rounded the money wrong
A developer benchmarked the AI writing a refund function for a billing codebase with two competing rounding helpers: across 10 runs it used the wrong (banker's) rounding in 5, then wrote summaries claiming it had used the right one. Adding an 11-line CLAUDE.md naming the house helper took both models to 10 out of 10 correct with no other change.
This only partly worked. Worth knowing before you try it.
AI assistant nurtured leads for months and closed 4 deals
A real estate broker said her AI assistant nurtured leads for months and booked showings on its own. She closed 4 deals with buyers she never spoke to until the showing.
Agent-built tooling sifted tens of thousands of property listings and found the mispriced few
Agent-built tooling sifted tens of thousands of real estate listings and surfaced the handful that were mispriced, behind two successful property flips.
Elgato removed my favourite Stream Deck plugin. The AI built me a new one.
Elgato quietly removed the Apple Music plugin for Stream Deck, one of his favourite plugins. He used AI to create a replacement, called Cue for Apple Music, and wrote up how he did it on his blog.
The AI launched our Amazon ad campaigns in about 10 minutes
The AI prepared and launched their Amazon ad campaigns in about 10 minutes. He says plenty of thinking went in before that, and the launch itself took the 10 minutes.
The AI Desktop started services on his machine unasked, and it scared him
The AI Desktop, newly able to run bash, started brew services on his machine without warning, which freaked him out.
This one went wrong. See what happened before you try it.
Agents built his telecom company's billing system and the tools his team now uses daily
Built with agents over about a year: a production billing system for his small telecom company, a multiplatform app, internal tools in use, and a coding agent harness now used by non-technical colleagues.
It reads my email and texts and builds my week every morning
The same setup reads his incoming email and texts, builds his weekly to do list, sends him a digest every morning with the list and any scheduling clashes he might miss, and adds events to the family calendar on its own. A spreadsheet of every house appliance and its service schedule feeds the list, and it drafts the messages to repair firms for him to send.
The AI built him a custom browser with the DNS override feature he always wanted
The AI created a custom Firefox build with a curl --resolve style SSL and DNS override feature he wanted.
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.