# Update Cog (agent skill)

> Update Cog is an agent skill (a SKILL.md file) from huytieu/COG-second-brain. Check for and apply upstream COG framework updates (skills, docs, scripts) without touching personal content. It works with Claude Code, Codex, Cursor and Gemini CLI and has 1,260 GitHub stars across a repository of 2 listed skills.

Check for and apply upstream COG framework updates (skills, docs, scripts) without touching personal content Framework files (safe to update — never contain user content): - Core docs: README.md, SETUP.md, AGENTS.md, GEMINI.md, CHANGELOG.md, CONTRIBUTING.md - Skills: .claude/skills//SKILL.md - Powers: .kiro/powers//POWER.md - Gemini: .gemini/commands/.toml, .gemini/skills/.md - Config: .claude-plugin/plugin.json, marketplace-entry.json, .gitignore - Scripts: cog-update.sh - Version: COG-VERSION

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/huytieu/COG-second-brain |
| Skill path | skills/update-cog/SKILL.md |
| Skill name | update-cog |
| GitHub stars | 1,260 |
| Installs on skills.sh | not listed |
| License | MIT |
| Skills in repo | 2 |
| Plugin marketplace | no |
| Official | no |
| Works with | Claude Code, Codex, Cursor, Gemini CLI |
| Category | Docs & writing |
| Last commit | Oct 2, 2026 |

## Add this skill

### Claude Code

```sh
git clone --depth 1 https://github.com/huytieu/COG-second-brain.git
cp -r COG-second-brain/skills/update-cog ~/.claude/skills/update-cog   # personal, or .claude/skills in a project
```

In the Claude apps, zip the skill folder and upload it under Customize > Skills > + > Upload a skill (code execution must be on).

### ChatGPT / Codex

```sh
git clone --depth 1 https://github.com/huytieu/COG-second-brain.git
cp -r COG-second-brain/skills/update-cog .agents/skills/update-cog   # repo; ~/.agents/skills for all projects
```

### Cursor

```sh
git clone --depth 1 https://github.com/huytieu/COG-second-brain.git
cp -r COG-second-brain/skills/update-cog .cursor/skills/update-cog   # project; ~/.cursor/skills for all projects
```

Sources (checked 2026-10-07): https://code.claude.com/docs/en/skills, https://support.claude.com/en/articles/12512180-using-skills-in-claude, https://learn.chatgpt.com/docs/build-skills, https://cursor.com/docs/context/skills

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Canonical page: https://appsgit.com/skills/huytieu-update-cog
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