COG-second-brain
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About
Cognition + Obsidian + Git — A self-evolving second brain powered by AI agents, markdown files, and version control. No database, no vendor lock-in — just .md files that think.
Works with Claude Code • Cursor • Kiro • Gemini CLI • OpenAI Codex • any AI that reads markdown > Inspired by Garry Tan's gstack and gbrain
New to COG? Watch the 2-minute walkthrough to see it in action.
Done — COG is personalized and ready in 2 minutes. See SETUP.md for optional config (Git sync, iCloud, Obsidian Tasks, etc.).
COG ships a full Claude Code surface plus core native surfaces for Kiro and Gemini CLI, with AGENTS.md as the universal fallback for Codex and other…
Across sources
- Stars 1.2k
- Forks 134
- Commits 67
- Releases 6