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"how do you remember everything you read?" I don't. Claude does. every article, PDF, and transcript goes into one Obsidian folder. Claude reads it, breaks it into atomic notes, links it to the rest. I just ask. that's Karpathy's second-brain method. three folders, one file. full guide below.

88,119 views • 2 months ago •via X (Twitter)

10 Comments

Cookbook's profile picture
Cookbook2 months ago

We've been working on the team version of this. One thing we found: letting the AI rewrite notes in place slowly loses meaning. Adding new notes and marking the old ones replaced (originals kept) works better. Another issue: every note counts the same, even the one that was wrong last week. What fixed it for us: notes gain trust when work that used them actually succeeds. The hard part starts when a second person and their agent share the wiki.

Eriks Briedis's profile picture
Eriks Briedis2 months ago

Linking them back is where mine fell over. Notes compiled out of Claude sessions, and six months in I had two of them claiming opposite things with nothing saying which one won. Now every note gets a supersedes field.

AI Mastery Guide's profile picture
AI Mastery Guide2 months ago

Turning notes into a linked second brain is such a good idea

Artzy's profile picture
Artzy2 months ago

atomic notes make one obsidian folder feel searchable

qurool's profile picture
qurool2 months ago

nice share mate, we don't have to use one brain if we can use two

Placar Brasil's profile picture
Placar Brasil2 months ago

salvar as notas em um banco e pedir pro LLM cruzar com o que leu hoje.效能 🔥

DeepRead.com's profile picture
DeepRead.com2 months ago

A book's chapter and part structure is the author's logic made explicit. Link atoms along that skeleton and you reconstruct how they think.

Alpha Batcher's profile picture
Alpha Batcher2 months ago

Claude does everything for me

William Lockard's profile picture
William Lockard2 months ago

The value of this is overstated often

Tony Tong | Founder | Ancient Systems x AI's profile picture
Tony Tong | Founder | Ancient Systems x AI1 month ago

Similar setup here. Claude plus an indexing layer on top of Obsidian, so pulling from thousands of notes stays fast instead of a manual search every time, same idea as how a database gets indexed for speed.

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Obsidian + Claude Code is how Andrej Karpathy turns 15 years of notes into a brain that works while he sleeps. The method behind it costs $0 and takes 5 minutes a day and it outlived every productivity app since 2011. Every idea, link, and half-thought gets appended to the top of a single note, with no sorting, no folders, no tags. Once a week he scrolls through, and anything that still matters gets copied back to the top. Weak ideas sink. Strong ideas resurface 5, 10, 20 times and by the 20th pass your brain has already wired them into everything else you know. Repetition as a filter. That's the whole system. Now the 2026 upgrade almost nobody is running: Drop that note into an Obsidian vault and open the folder with Claude Code not the chat app, the terminal agent that reads files. 3 commands change everything: read my last 30 days of notes and find the 3 ideas I keep circling without acting on link every note mentioning this project into a CLAUDE.md of what I actually believe about it draft this week's post from the idea that resurfaced most Claude Code doesn't search your vault it walks it, follows the wikilinks, and hands you the patterns you were too close to see. Karpathy method filters the signal, Obsidian stores it, Claude Code compounds it. One is a habit, one is a folder, one is $20 a month together they're the closest thing to a second brain that thinks back. Most people collect notes for 10 years and never read them once. His notes read him.

Spike 1%

12,467 views • 2 months ago