Agents In UseA personal annoyance or a good joke can make a better brief than “build me an app”. These projects have a visible finish line. Their authors still chose assets, tested devices and made tradeoffs; the collection does not promise a weekend completion time.
The joke is the interaction: goats eat the note. The author supplied sprites and DNS work. Read the permanent file-loss caveat before copying it.
news.ycombinator.comAn author used Claude Code to build Goatpad without opening an IDE, while handling repository setup, sprites, uploads and DNS manually. Goats eat notes, creating a loss risk the author says helped with focus.
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Claudevia Claude CodePlayer, team and season make the search specific; recent queries and working-folder downloads remove repeated asset-hunting steps.
app.therundown.aiBen Sinden used Claude to build a local search tool for vintage player stickers needed in retro-football videos, with player, season and team inputs, recent searches and one-click working-folder downloads.
PublishedClaudeOne HTML file became a nine-track jam room. The author tried it with two browsers and a phone in the same room, rather than claiming a remote performance.
news.ycombinator.comThe author reports a 1,529-line single HTML jam app with nine tracks, sequencer and keyjazz modes, mobile multi-touch and WebRTC audio, tested with two browsers and a phone.
PublishedClaudevia Claude OpusUnavailable native AR changed the design to phone orientation. Real-phone checks then exposed motion mapping, clipping and safe-area problems.
linkedin.comReplit Agent built a motion-based ghost game with Three.js and Expo. Phone tests corrected mapping and safe areas; it uses orientation rather than native AR.
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Replit Agentvia Replit Agent 3; Claude Opus within ReplitAn ESP32 bridge, browser preview and camera feedback ended in a photograph of the printer being printed. Compatibility with other models remains unproven.
reddit.comCodex wrote and flashed an ESP32 bridge for a Bluetooth cat printer. Camera snapshots checked real paper output while the owner handled wiring and final checks.
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CodexThe useful product detail is downloadable instructions with materials and tools. A working interface does not verify every piece of generated craft advice.
Supriya Jois built a custom DIY helper chatbot after experimenting with Replit and Lovable for prototypes.
PublishedReplit Agent