Repolode
Submit
charlie947

charlie947/ai-second-brain

A Claude Code skill that guides you through building a searchable Obsidian knowledge base from your ChatGPT and Claude history, research files, and daily inputs.

View on GitHub
Stars
225
Forks
44
Open issues
0
Last commit
15 days ago

What is it?

AI Second Brain is a Claude Code skill that walks a user through setting up a personal, AI-maintained knowledge base. It is built around Andrej Karpathy's approach of keeping a folder of markdown files that an LLM compiles into a wiki.

The skill works in three stages. It exports ChatGPT and Claude conversation history and turns it into a tagged, linked Obsidian vault. It then sets up a raw/ and wiki/ folder pair so that new PDFs, articles and transcripts dropped into raw/ are compiled into an updating wiki. The third stage connects Gmail, NotebookLM and Granola, optionally sets up iMessage Channels for messaging the knowledge base from a phone, and scaffolds the /today, /ideas and /create slash commands.

The project is aimed at non-technical users. Steps that need the user, such as requesting data exports, granting macOS permissions, or logging in to NotebookLM, pause for confirmation. Data stays in local folders, and the only network calls are those Claude Code makes to run the LLM. The iMessage step is Mac-only, and the skill can be used without it.

Key features

  • 01Exports ChatGPT and Claude history into a tagged, linked Obsidian vault.
  • 02Sets up a raw/ and wiki/ folder structure that Claude Code compiles into a living wiki.
  • 03Connects Gmail, NotebookLM and Granola as sources.
  • 04Optionally configures iMessage Channels to query the knowledge base from a phone.
  • 05Scaffolds /today, /ideas and /create slash commands.

Use cases

  • Organising years of ChatGPT and Claude conversations by topic, project or person.
  • Building a wiki that updates when you add new PDFs, articles or meeting transcripts.
  • Querying your notes and research from a phone via iMessage on a Mac.

Quick start

  1. 1

    Clone the skill into your Claude Code skills folder

    git clone https://github.com/charlie947/ai-second-brain.git ~/.claude/skills/ai-second-brain
  2. 2

    Open Claude Code in any folder and ask it to set up your AI second brain

Things to know

  • Built as a Claude Code skill, so you need Claude Code installed and working.
  • Step 3b (iMessage Channels) is Mac-only, and the README gives a Telegram/Discord alternative for other systems.

In collections

Claude Code tools, skills & plugins

Topics

#ai#knowledge-management#obsidian#personal-knowledge-management#claude-code#llm-wiki#karpathy-wiki#pkm#second-brain

FAQ

What is ai-second-brain?
A Claude Code skill that guides you through building a searchable Obsidian knowledge base from your ChatGPT and Claude history, research files, and daily inputs. AI Second Brain is a Claude Code skill that walks a user through setting up a personal, AI-maintained knowledge base. It is built around Andrej Karpathy's approach of keeping a folder of markdown files that an LLM compiles into a wiki.
Is ai-second-brain free to use? What license does it have?
ai-second-brain is open source under the MIT license. Check the license terms before using it in commercial products.
Is ai-second-brain still maintained?
Actively maintained. The last commit to ai-second-brain was on Oct 24, 2026.
What can I use ai-second-brain for?
Organising years of ChatGPT and Claude conversations by topic, project or person. Building a wiki that updates when you add new PDFs, articles or meeting transcripts. Querying your notes and research from a phone via iMessage on a Mac.
How do I install ai-second-brain?
Clone the skill into your Claude Code skills folder: git clone https://github.com/charlie947/ai-second-brain.git ~/.claude/skills/ai-second-brain Open Claude Code in any folder and ask it to set up your AI second brain
Where can I get ai-second-brain?
The source code and installation instructions are on GitHub: https://github.com/charlie947/ai-second-brain

Summary generated by AI from the project's README. GitHub stats refresh daily.

Related projects