second-brain-os

An AI second brain that maintains itself. Full guide, starter vault, agent skills and scripts for a self-organizing knowledge base in Claude Code and Obsidian.

Productivity & Notes
Prompts & Skills
AI Coding Assistants

agent-skills
ai-agents
claude
claude-code
claude-skills
knowledge-graph
knowledge-management
llm
mcp
obsidian
personal-knowledge-base
pkm
second-brain

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Stars: 949
Forks: 152
+ today: +1
Created: 28d

Ranking data as of October 5, 2026 (UTC).

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949 stars

Overview

An AI second brain that maintains itself. Full guide, starter vault, agent skills and scripts for a self-organizing knowledge base in Claude Code and Obsidian. It ranks #3756 on GitTiger, gaining +1 star on October 5, 2026 (UTC).

The project is written in HTML and has 152 forks. It was created 28d ago.

Installation

git clone https://github.com/undefined-ui/second-brain-os.git
cd second-brain-os
# see README for setup