HackerTube: YouTube built from videos recommended by HN
- ID
- 41649
- Status
- summarized
- Published
- 01 Nov 2026, 3:56 AM
- Fetched
- 01 Nov 2026, 6:09 AM
- Provider
- Hacker News
- Category
- dev-community
- Original URL
- https://karpathy.bearblog.dev/hacker-tube/
- Source URL
- https://hnrss.org/best
Summary
- Score
- 7.5
- Created
- 01 Nov 2026, 6:10 AM
- Tags
- Audience
- developersvibe_codersai_agent_userssaas_startup_founders
What happened
The author describes spending a Saturday morning having Opus 5.5 build a YouTube clone in about two hours: it downloaded and filtered Hacker News comments with Sonnet in a workflow, narrowed them to roughly 40K comments that recommend a video, and resolved those to 6,454 YouTube videos recommended on HN between 2007 and 2026 across 150 topics. The result, hackertube.org, runs a YouTube-style UI on a VPS with 50% thumbnails instead of uploaded ones, account-free 'For You' recommendations that keep state in local browser session, keyboard shortcuts, and a data export so others can feed the dataset to their own agent. The HN thread drew 284 points and 115 comments.
Why it matters
Use this as a calibration point for agent-assisted build estimates: scrape, filter, UI, domain, VPS and hardening in roughly two hours means the real work was the data decision (40K comments filtered down to 6,454 videos), not the interface. The pattern worth copying for a small SaaS is shipping the export — users can regenerate the product with their own agent — and skipping accounts entirely by keeping recommendation state in the browser session, which removes auth and stored-profile overhead.
Discussion angle
The claim 'secure, harden, optimize' is the least evidenced part of a two-hour agent build — ask what you'd actually trust an agent-generated site with on a public VPS, and whether the durable asset here is the filtered dataset plus export rather than the UI.