by huytieu · Codex Skill · ★ 550
Last updated: · Indexed by AgentSkillsHub · Auto-synced every 8h
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 files that think. Quick Start SETUP.md 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. Quick Start 1. Clone & enter the repo: 2. Run onboarding in your agent:
| Stars | 550 |
| Forks | 71 |
| Language | Shell |
| Category | Codex Skill |
| License | MIT |
| Quality Score | 66.8566897281669/100 |
| Open Issues | 5 |
| Last Updated | 2026-06-22 |
| Created | 2025-10-15 |
| Platforms | claude-code, cli, codex, gemini |
| Est. Tokens | ~14k |
These tools work well together with COG-second-brain for enhanced workflows:
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COG-second-brain is 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.. It is categorized as a Codex Skill with 550 GitHub stars.
COG-second-brain is primarily written in Shell. It covers topics such as agent-loop, agentic, ai-agents.
You can find installation instructions and usage details in the COG-second-brain GitHub repository at github.com/huytieu/COG-second-brain. The project has 550 stars and 71 forks, indicating an active community.
COG-second-brain is released under the MIT license, making it free to use and modify according to the license terms.
The top alternatives to COG-second-brain on Agent Skills Hub include third-brain-v5-skills, obsidian-claude-pkm, agent-second-brain. Each offers a different approach to the same problem space — compare them side-by-side by stars, quality score, and community activity.