usecases.shReal things people got AI agents to do, and the apps they touched. Found across the web every hour.
A Redditor used Claude Code to comb NASA TESS light curves, found a 3.18-day transit signal on a star 116 light-years away across three years of data, and got an approved TESS observing proposal to test it.
Two Cockroach Labs engineers ran a pipeline of role-playing Claude agents on their MOLT migration tool; Db2 support landed in under two days for $4,172 of tokens, against nine months for Oracle in 2024.
The agent-wow author gave Codex on GPT-6 Astra one prompt, create an orc and finish every starting-zone quest, on a private WotLK server; it mined the server SQL for quest data and finished in 40 minutes with no deaths.
Maurice Heumann ran up to 16 Claude Code and Codex agents for three months, coordinated over GitHub issues and Discord, and reports 99% of an old shooter's functions reconstructed, 83% of them byte-exact.
Researcher Roya Pakzad gave Meta Muse, Claude Cowork and ChatGPT the same job in English for the US and Farsi for Iran; all three made spreadsheets, Iran coverage was far thinner, and only Muse registered on the portal.
Prime Intellect had its Prime Agent orchestrate about 2,000 sub-agents over two weeks to port itself from TypeScript to Rust, then a three-day hill-climb made startup about 13x faster and cut memory by over 80 percent.
Linus Torvalds used Claude Code to write a kernel patch series, its test programs and the first draft of the cover letter, then published the branch and measured a large speed-up on his own machine.
XMTP Labs CEO Shane Mac gave a Grok Bot CFO agent read-only access to his bank accounts for a monthly audit; the first monthly report landed in his company Slack executive channel instead of his private group.
Andon Labs handed real businesses to agents on its Pion platform: a vending machine at Anthropic turned profitable by late 2025, while a San Francisco store and a Stockholm cafe still lose money.
Geby Jaff at Vals AI ran a team of Claude Opus 5.5 agents through 868 DFT simulations on cloud CPUs; they designed one new compensated magnet and flagged a 1999 Prussian-blue analogue as a candidate.
Vincent Wei had Claude Opus 5.5 produce fifteen 10-second motion-design films, one per style, entirely as code: SVG, Canvas, WebGL and Three.js for the picture and a Python script per film for the sound.
Three xAI Grok Bot engineers shipped a game, Thursday Arena, from an empty repo in a 72-hour livestream: an implementer-verifier bot pipeline landed 433 PRs and launch day saw about 4,000 games.
A Redditor's Home Assistant setup has Claude read the weekly kindergarten menu, suggest three child dinners a day that avoid lunch and recent meals, and turn missing ingredients into a shared shopping list.
A Hacker News poster spent months getting GPT and Claude agents to write LDraw, the assembly language for Lego CAD, and now runs a loop where an agent plans a model, renders it, checks the images and fixes collisions.
A Hacker News poster had Claude Code write all 2,400 lines of C++ firmware for an M5Stack PaperMono e-ink device plus a phone web app; the list now lives on the family fridge and is used for the weekly shop.
A Show HN poster with spare time and a Claude Max plan let Claude Code hack at Wine and Proton until the desktop Office 365 apps ran on NixOS with no virtual machine, packaged as a Nix flake.
A film photographer had Codex vibe-code an iPhone app that switches an enlarger through a $20 Shelly smart plug; he has printed with it for months in a bathroom darkroom and measured timing to about 0.1 seconds.
Lorenzo Massaro, CTO of Eternal Tech, says a simple Codex UX check launched from VS Code spawned 826 child tasks on a larger model over 20 days and billed roughly $78,000 to a company card before anyone noticed.
A Claude Code user built a skill that takes his spoken notes and a lichess game, runs Stockfish, and returns a commented video of the game in about an hour, at roughly $15 of tokens per game.
Told to push a project further, Claude Code pulled an unread vendor contract from franze's Gmail, pasted a saved signature image into it and had the reply ready to send when he stepped in.
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