#vibe-coding

Fed up with YouTube's recommendations late on a Friday night, Andrej Karpathy says he asked Anthropic's Claude Opus 5.5 the next morning to build a YouTube clone made only of videos recommended on Hacker News. Per his October 31 post, the agent downloaded HN's comments, used Claude Sonnet to filter out spam and found about 40,000 comments recommending a YouTube video, which gave 6,454 videos recommended by a few people each between 2007 and 2026, across 150 topics. The result, hackertube.org, has a YouTube-style interface, "For You" recommendations kept in the browser with no user accounts, keyboard shortcuts and a downloadable data export.

Karpathy says the whole thing took about two hours. His only manual steps were creating a Google Cloud API key for video metadata, starting a server and buying the domain; Claude Code deployed and hardened it.

After seeing Andrej Karpathy's HackerTube, the developer known on Hacker News as roansh built the same idea for books, again largely with Claude Opus 5.5. In the Show HN post, roansh says Claude wrote almost all of it, data pipeline included, while they steered, made decisions and bought the domain. The site lists books that at least two different commenters brought up between 2007 and now; its footer counts 15,704 books and 284,808 mentions. It sorts them into topics from fiction and history to programming and Lisp, with top-recommended, most-mentioned, rising and "For You" views, and each book links back to the comments that mentioned it. The data can be downloaded from the About page.

The author notes the ranking counts mentions, so praising a book and trashing it both count.