AI Second Brain

by charlie947

AI Second Brain is an AI Engineering skill for Claude Code, published by charlie947 in ai-second-brain.

163 stars34 forkson charlie947/ai-second-brainAdded 2026/09/08+4% in starsRepository updated 2026/04/17

View source on GitHub Download repo ZIP

aiclaude-codekarpathy-wikiknowledge-managementobsidianpkmsecond-brain

Install in seconds

Install AI Second Brain

Copy AI Second Brain into your Claude Code skills folder. Run the command in your terminal, or review the source on GitHub before installing.

terminal

npx degit https://github.com/charlie947/ai-second-brain ~/.claude/skills/ai-second-brain

Requires Node.js. Downloads this skill only — not the rest of the repository — into your Claude Code skills folder.

Without Node.js

git clone https://github.com/charlie947/ai-second-brain.git

Clones the whole repository, then copy the skill’s own directory into your skills folder yourself.

In this catalog

Source file: SKILL.md in charlie947/ai-second-brain
Installs to: ~/.claude/skills/ai-second-brain
Collection: The only skill cataloged from this repository
Category: AI Engineering — 3670 skills

What AI Second Brain does

AI Second Brain walks users through building an Obsidian-based AI knowledge base from ChatGPT and Claude exports, research sources, and daily inputs. It also covers Karpathy-style wiki setup and phone access via iMessage Channels and slash commands.

AI Second Brain is cataloged under AI Engineering on DirSkills. AI Second Brain comes from a repository tagged ai, claude-code, karpathy-wiki, knowledge-management and obsidian.

Documentation

README

Excerpt

AI Second Brain Setup

This skill walks the user through the full setup from Charlie Hills's MarTech AI newsletter issue "How to build a second brain with Obsidian and Claude Code". The process turns a folder of exports and raw research into a living wiki the user can talk to from their phone.

The setup has three steps. The user can do all three or pick one — confirm at the start which they want.

This is the opening of the README. Read the full README on GitHub.

Frequently asked about AI Second Brain

How does AI Second Brain compare to other AI Engineering skills?
AI Second Brain ranks #3387 by stars among the 3670 AI Engineering skills in this catalog. The most-starred ones next to it are Architecture Decision Records, AI-First Engineering and Agentic OS. DirSkills ranks by the star count of the repository each skill ships in, so that order reflects how popular those repositories are rather than any review of AI Second Brain against them. Open each page to compare what they document and how they install.