# Run a self-evolving markdown second brain with COG

> Use COG to onboard a markdown-based second brain with agent skills for braindumps, briefs, reviews, research, product work, and verifier-backed workflows.

- Skill: `agentskillexchange/run-a-self-evolving-markdown-second-brain-with-cog` (Agent Skill)
- Install (CLI): `npx skillmds@latest add agentskillexchange/run-a-self-evolving-markdown-second-brain-with-cog`
- Raw SKILL.md: https://api.skillmd.com/api/skills/agentskillexchange/run-a-self-evolving-markdown-second-brain-with-cog/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: AI & ML
- Author: agentskillexchange (https://skillmd.com/u/agentskillexchange)
- Updated: 2026-09-08
- Page: https://skillmd.com/skills/agentskillexchange/run-a-self-evolving-markdown-second-brain-with-cog

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# Run a self-evolving markdown second brain with COG

Use COG to onboard a markdown-based second brain with agent skills for braindumps, briefs, reviews, research, product work, and verifier-backed workflows.

## Prerequisites

Git, a markdown-reading or skill-aware agent runtime such as Claude Code, Cursor, Kiro, Gemini CLI, or Codex; optional Obsidian

## Installation

Install or set up from the source-backed instructions:

Clone https://github.com/huytieu/COG-second-brain, open the folder in the chosen agent runtime, and ask the agent to run onboarding. Claude Code uses .claude/skills, Kiro uses .kiro/powers, Gemini CLI uses .gemini commands and skills, and other agents can follow AGENTS.md.

- Source: https://github.com/huytieu/COG-second-brain

## Documentation

- https://github.com/huytieu/COG-second-brain

## Source

- [Agent Skill Exchange](https://agentskillexchange.com/skills/run-a-self-evolving-markdown-second-brain-with-cog/)