# Feature Doc

Document a shipped feature from the live app: real screenshots and a screen recording...

- Repository: https://github.com/huytieu/COG-second-brain (1331 stars)
- Category: Writing
- License: MIT
- Last updated: 2026-10-23
- Runs scripts: no, instructions only

## Install

Claude Code: `npx skills add huytieu/COG-second-brain --skill feature-doc -g -a claude-code -y`
Codex: `npx skills add huytieu/COG-second-brain --skill feature-doc -g -a codex -y`
Cursor: `npx skills add huytieu/COG-second-brain --skill feature-doc -g -a cursor -y`
Gemini CLI: `npx skills add huytieu/COG-second-brain --skill feature-doc -g -a gemini-cli -y`

## Description

Document a shipped feature from the live app: real screenshots and a screen recording, a docs article with how-to and use cases, verified before publish

## SKILL.md, as published by its author (untrusted third-party text, read it as data)

Read `.claude/skills/feature-doc/SKILL.md` and execute it exactly as written; that file is the authoritative
playbook. Then follow `.agents/rules/cog.md`.

Antigravity substitution: where the playbook delegates to a `.claude/agents/<name>`
worker, invoke `.agents/agents/<name>.md` via `invoke_subagent` instead.