title: @coreyganim: Karpathy dropped a viral post about building a "second brain" with AI. We built it live in under 20 ...
author: @coreyganim
contenttype: tweet
publication: Twitter/X
published: 2026-04-07T15:35:57+00:00
sourceurl: https://x.com/coreyganim/status/2041540491859169435
word_count: 133
Karpathy dropped a viral post about building a "second brain" with AI. We built it live in under 20 minutes.
The system:
1. Three folders: raw/ (brain dump), wiki/ (AI organizes it), outputs/ (query results)
2. One-click install: npx skills add NicholasSpisak/second-brain
3. Obsidian Web Clipper to capture any article with one click
4. Run "ingest" and the AI reads everything in raw/, builds wiki pages, and maps connections automatically
5. Query your own knowledge base like talking to an expert
6. Monthly lint command catches contradictions and gaps before they compound
Day 1 it's basic. Day 90 it's a company asset nobody else has.
Free skill in the YouTube description that scaffolds the whole thing in 60 seconds.
Video below, YouTube link in the replies.
Video
Nick Spisak (@NickSpisak_)
x.com/i/article/204044059564…
— https://nitter.net/NickSpisak_/status/2040448463540830705#m