eugeniughelbur/obsidian-second-brain
3,183 stars · Last commit 2026-07-12
Cross-CLI skill for Obsidian: turn your vault into a living AI-first second brain across Claude Code, Codex, Gemini, OpenCode, Hermes, and Pi. 44 commands - self-rewriting notes, local+hybrid semantic search, key-less web research, /obsidian-architect codebase docs, and scheduled agents that maintain the vault while you sleep.
README preview
<p align="center">
<a href="https://github.com/eugeniughelbur/obsidian-second-brain">
<img src="media/banner.png" alt="obsidian-second-brain: one brain, six platforms, 44 commands. A cross-platform skill for Obsidian that runs on Claude Code, Codex, Gemini, OpenCode, Hermes, and Pi." width="100%" />
</a>
</p>
<p align="center">
<a href="#install"><img src="https://img.shields.io/badge/Claude_Code-D97757?style=for-the-badge&logo=anthropic&logoColor=white" alt="Claude Code" /></a>
<a href="#codex-cli--gemini-cli--opencode"><img src="https://img.shields.io/badge/Codex_CLI-412991?style=for-the-badge&logo=openai&logoColor=white" alt="Codex CLI" /></a>
<a href="#codex-cli--gemini-cli--opencode"><img src="https://img.shields.io/badge/Gemini_CLI-4285F4?style=for-the-badge&logo=googlegemini&logoColor=white" alt="Gemini CLI" /></a>
<a href="#codex-cli--gemini-cli--opencode"><img src="https://img.shields.io/badge/OpenCode-181818?style=for-the-badge&logo=opensourceinitiative&logoColor=white" alt="OpenCode" /></a>
</p>
<p align="center">
<strong>One codebase. Six CLIs. Same brain.</strong>
</p>
<p align="center">
<img src="https://img.shields.io/badge/Obsidian-Vault-7C3AED?style=for-the-badge&logo=obsidian&logoColor=white" alt="Obsidian Vault" />
<img src="https://img.shields.io/github/v/release/eugeniughelbur/obsidian-second-brain?style=for-the-badge&color=green" alt="Release" />