Build a Karpathy-style second brain in one folder on Grok Bot's computer
Following Andrej Karpathy's second-brain idea, a user gives Grok Bot one folder on its cloud computer and feeds it notes, links and documents so it maintains an organized knowledge base.
Source
@xbtvivi on X · 2026-10-15
Written in our own words. Credit to the original author. Link checked 2026-10-22.
What they did
Following Andrej Karpathy's second-brain idea, a user gives Grok Bot one folder on its cloud computer and feeds it notes, links and documents so it maintains an organized knowledge base.
Result (as claimed)
A second brain that lives with the agent instead of on one laptop.
Tools they used
Cost: Grok Bot: from $30/mo.
Set it up
Define the job
Say exactly what you want done and what the agent may and may not do on your behalf.
Share only what is needed
Give Grok Bot the minimum files or access required. Avoid sharing passwords in chat when a safer login flow exists.
Review the plan
Ask the agent to show its plan or draft before it acts, and approve each step that has real consequences.
Check the result
Confirm the outcome yourself (order placed, request sent, document understood) and keep a record.
Copy the full setup prompt
Paste into your agent and it will walk you through the setup, asking before anything that sends, posts or spends.
You are helping me set up this AI use case end to end in Claude Code. Goal: Build a Karpathy-style second brain in one folder on Grok Bot's computer What the original author did: Following Andrej Karpathy's second-brain idea, a user gives Grok Bot one folder on its cloud computer and feeds it notes, links and documents so it maintains an organized knowledge base. Reported result (as claimed by the author): A second brain that lives with the agent instead of on one laptop. Source: https://x.com/xbtvivi/status/2110684215796711733 Tools they used: Grok Bot, Obsidian Category: Personal & life Please: 1. Ask me 3 short questions about my situation (accounts I have, budget, what I want the output to look like). 2. Propose a step-by-step plan using these tools or cheaper alternatives, with the time and cost of each step. Use official pricing pages; say "check pricing" if unsure. 3. Then do the setup with me one step at a time, waiting for my OK before anything that sends messages, posts publicly, spends money or deletes data. 4. Finish with a checklist to run it again next time.
You are helping me set up this AI use case end to end in Codex. Goal: Build a Karpathy-style second brain in one folder on Grok Bot's computer What the original author did: Following Andrej Karpathy's second-brain idea, a user gives Grok Bot one folder on its cloud computer and feeds it notes, links and documents so it maintains an organized knowledge base. Reported result (as claimed by the author): A second brain that lives with the agent instead of on one laptop. Source: https://x.com/xbtvivi/status/2110684215796711733 Tools they used: Grok Bot, Obsidian Category: Personal & life Please: 1. Ask me 3 short questions about my situation (accounts I have, budget, what I want the output to look like). 2. Propose a step-by-step plan using these tools or cheaper alternatives, with the time and cost of each step. Use official pricing pages; say "check pricing" if unsure. 3. Then do the setup with me one step at a time, waiting for my OK before anything that sends messages, posts publicly, spends money or deletes data. 4. Finish with a checklist to run it again next time.
You are helping me set up this AI use case end to end in Grok Bot. Goal: Build a Karpathy-style second brain in one folder on Grok Bot's computer What the original author did: Following Andrej Karpathy's second-brain idea, a user gives Grok Bot one folder on its cloud computer and feeds it notes, links and documents so it maintains an organized knowledge base. Reported result (as claimed by the author): A second brain that lives with the agent instead of on one laptop. Source: https://x.com/xbtvivi/status/2110684215796711733 Tools they used: Grok Bot, Obsidian Category: Personal & life Please: 1. Ask me 3 short questions about my situation (accounts I have, budget, what I want the output to look like). 2. Propose a step-by-step plan using these tools or cheaper alternatives, with the time and cost of each step. Use official pricing pages; say "check pricing" if unsure. 3. Then do the setup with me one step at a time, waiting for my OK before anything that sends messages, posts publicly, spends money or deletes data. 4. Finish with a checklist to run it again next time.
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Guides for this use case
How to build an AI second brain and personal wiki · How to use AI agents with Obsidian and your notes · How to set up Grok Bot agents for real work
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