huytieu/COG-second-brain
508 stars · Last commit 2026-04-16
Self-evolving second brain with 17 AI skills, 6 worker agents, and people CRM — inspired by Garry Tan's gstack and gbrain. Works with Claude Code, Cursor, Kiro, Gemini CLI, Codex.
README preview
# COG: The Agentic Second Brain That Actually Self-Evolves
**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.
[Quick Start](#quick-start) | [Skills](#skills) | [Features](#features-at-a-glance) | [FAQ](#faq) | [SETUP.md](SETUP.md)
> Works with [Claude Code](https://claude.ai/download) • [Cursor](https://cursor.com/) • [Kiro](https://kiro.dev/) • [Gemini CLI](https://github.com/google-gemini/gemini-cli) • [OpenAI Codex](https://github.com/openai/codex) • any AI that reads markdown
>
> Inspired by [Garry Tan's gstack](https://github.com/garrytan/gstack) and [gbrain](https://github.com/garrytan/gbrain)
```mermaid
graph LR
A[You] -- natural language --> B[AI Agent]
B -- runs --> C[17 Skills]
C -- delegates to --> W[6 Worker Agents]
C -- reads & writes --> D[.md Files]
W -- reads & writes --> D
C -- syncs with --> G[GitHub / Linear / Slack / PostHog]
D --> E[Git]
D --> F[iCloud]