feature-doc

huytieu/COG-second-brain Writing & content

feature-doc is a skill in huytieu/COG-second-brain, last changed 22 Oct 2026. It can run shell commands, reach the network and bundle scripts — read the findings before installing.

From the author

Closed-loop feature documentation for your product. Give it a feature (issue numbers or an id) and it reads the source, drives your live app to capture real screenshots and a screen recording, writes a docs article (Docusaurus or any markdown docs site) with both how-to steps and use-case content, then verifies the article with a fresh-context read-only verifier before reporting. Use when you say "write the doc for <feature>", "document issue #123", or "/feature-doc".

How much a skill can do, not whether it is risky.

Pattern check

Nothing flagged

That isn't proof the skill is harmless.

Commit 144c7a3 · 29 Oct 2026

How the check works

Pattern check: nothing flagged

That isn't proof the skill is harmless.

Install

Each tab says whether it installs commit 144c7a3, the one we checked, or the latest version.

OpenCode also looks in .agents/skills/ and ~/.agents/skills/, so use the Any agent steps.

Goose also looks in .agents/skills/ and ~/.agents/skills/, so use the Any agent steps.

Windsurf (Devin Desktop) also looks in .agents/skills/ and ~/.agents/skills/, so use the Any agent steps.

Zed also looks in .agents/skills/ and ~/.agents/skills/, so use the Any agent steps.

Roo Code also looks in .agents/skills/ and ~/.agents/skills/, so use the Any agent steps.

Factory Droid also looks in .agents/skills/ and ~/.agents/skills/, so use the Any agent steps.

Junie also looks in .agents/skills/ and ~/.agents/skills/, so use the Any agent steps.

Amp also looks in .agents/skills/ and ~/.agents/skills/, so use the Any agent steps.

No install command here reaches Kiro. Copy the skill's folder into .kiro/skills/ in your project, or ~/.kiro/skills/ for all your projects. huytieu/COG-second-brain/skills/feature-doc (opens in a new tab)

Antigravity also looks in .agents/skills/, so the Any agent steps reach it with This project. For All projects, see where Antigravity looks.

Cline also looks in .claude/skills/, so the Claude Code steps reach it with This project. For All projects, see where Cline looks.

No tab for your agent? Use Any agent for OpenCode, Goose, Windsurf (Devin Desktop), Zed, Roo Code, Factory Droid, Junie and Amp. With This project, Any agent also reaches Antigravity and Claude Code reaches Cline. Kiro needs the folder copied by hand.

Pinned to commit 144c7a3, the one we checked.

From your project's root folder:

tmp="$(mktemp -d)" &&git clone -q --depth 1 --filter=blob:none --no-checkout https://github.com/huytieu/COG-second-brain.git "$tmp" &&git -C "$tmp" fetch -q --depth 1 origin 144c7a3a959cc99538b7dfee9c22c4b065a0e156 &&git -C "$tmp" sparse-checkout set -- skills/feature-doc &&git -C "$tmp" checkout -q 144c7a3a959cc99538b7dfee9c22c4b065a0e156 &&mkdir -p .claude/skills &&mkdir .claude/skills/feature-doc &&cp -R "$tmp"/skills/feature-doc/. .claude/skills/feature-doc/ &&rm -rf "$tmp"

If Claude Code was already running and this created the skills folder, run /reload-skills.

Claude Code docs

Pinned to commit 144c7a3, the one we checked.

Skills in the Claude apps belong to your account rather than to a project.

Make feature-doc.zip, with the skill folder at the top level:

tmp="$(mktemp -d)" &&git clone -q --depth 1 --filter=blob:none --no-checkout https://github.com/huytieu/COG-second-brain.git "$tmp" &&git -C "$tmp" fetch -q --depth 1 origin 144c7a3a959cc99538b7dfee9c22c4b065a0e156 &&git -C "$tmp" sparse-checkout set -- skills/feature-doc &&git -C "$tmp" checkout -q 144c7a3a959cc99538b7dfee9c22c4b065a0e156 &&out="$(mktemp -d)" &&cp -R "$tmp"/skills/feature-doc "$out"/feature-doc &&(cd "$out" && zip -qr - feature-doc) > feature-doc.zip &&rm -rf "$tmp" "$out"

In Claude, open Customize > Skills, select +, then + Create skill > Upload a skill, and choose feature-doc.zip.

On Free, Pro and Max plans, turn on Code execution and file creation (Create and edit files in newer settings) under Settings > Capabilities.

Claude apps docs

Pinned to commit 144c7a3, the one we checked.

From your project's root folder:

tmp="$(mktemp -d)" &&git clone -q --depth 1 --filter=blob:none --no-checkout https://github.com/huytieu/COG-second-brain.git "$tmp" &&git -C "$tmp" fetch -q --depth 1 origin 144c7a3a959cc99538b7dfee9c22c4b065a0e156 &&git -C "$tmp" sparse-checkout set -- skills/feature-doc &&git -C "$tmp" checkout -q 144c7a3a959cc99538b7dfee9c22c4b065a0e156 &&mkdir -p .agents/skills &&mkdir .agents/skills/feature-doc &&cp -R "$tmp"/skills/feature-doc/. .agents/skills/feature-doc/ &&rm -rf "$tmp"

Codex picks up new skills on its own; restart it if this one does not appear.

Codex docs

Pinned to commit 144c7a3, the one we checked.

From your project's root folder:

tmp="$(mktemp -d)" &&git clone -q --depth 1 --filter=blob:none --no-checkout https://github.com/huytieu/COG-second-brain.git "$tmp" &&git -C "$tmp" fetch -q --depth 1 origin 144c7a3a959cc99538b7dfee9c22c4b065a0e156 &&git -C "$tmp" sparse-checkout set -- skills/feature-doc &&git -C "$tmp" checkout -q 144c7a3a959cc99538b7dfee9c22c4b065a0e156 &&mkdir -p .cursor/skills &&mkdir .cursor/skills/feature-doc &&cp -R "$tmp"/skills/feature-doc/. .cursor/skills/feature-doc/ &&rm -rf "$tmp"

Cursor docs

Pinned to commit 144c7a3, the one we checked.

From your project's root folder:

tmp="$(mktemp -d)" &&git clone -q --depth 1 --filter=blob:none --no-checkout https://github.com/huytieu/COG-second-brain.git "$tmp" &&git -C "$tmp" fetch -q --depth 1 origin 144c7a3a959cc99538b7dfee9c22c4b065a0e156 &&git -C "$tmp" sparse-checkout set -- skills/feature-doc &&git -C "$tmp" checkout -q 144c7a3a959cc99538b7dfee9c22c4b065a0e156 &&mkdir -p .github/skills &&mkdir .github/skills/feature-doc &&cp -R "$tmp"/skills/feature-doc/. .github/skills/feature-doc/ &&rm -rf "$tmp"

In a running Copilot CLI session, run /skills reload.

Or install it with gh skill, which also installs the commit we checked. Needs GitHub CLI 2.90 or later.

gh skill install huytieu/COG-second-brain skills/feature-doc/SKILL.md@144c7a3a959cc99538b7dfee9c22c4b065a0e156 --agent github-copilot --scope project

Copilot & VS Code docs

Pinned to commit 144c7a3, the one we checked.

From your project's root folder:

tmp="$(mktemp -d)" &&git clone -q --depth 1 --filter=blob:none --no-checkout https://github.com/huytieu/COG-second-brain.git "$tmp" &&git -C "$tmp" fetch -q --depth 1 origin 144c7a3a959cc99538b7dfee9c22c4b065a0e156 &&git -C "$tmp" sparse-checkout set -- skills/feature-doc &&git -C "$tmp" checkout -q 144c7a3a959cc99538b7dfee9c22c4b065a0e156 &&mkdir -p .gemini/skills &&mkdir .gemini/skills/feature-doc &&cp -R "$tmp"/skills/feature-doc/. .gemini/skills/feature-doc/ &&rm -rf "$tmp"

In a running session, run /skills reload.

Or use Gemini CLI’s own installer. Installs the latest version, not the one we checked.

gemini skills install https://github.com/huytieu/COG-second-brain.git --path skills/feature-doc --scope workspace

Gemini CLI docs

Pinned to commit 144c7a3, the one we checked.

OpenCode, Goose, Windsurf (Devin Desktop), Zed, Roo Code, Factory Droid, Junie, Amp and Antigravity read .agents/skills in a project.

From your project's root folder:

tmp="$(mktemp -d)" &&git clone -q --depth 1 --filter=blob:none --no-checkout https://github.com/huytieu/COG-second-brain.git "$tmp" &&git -C "$tmp" fetch -q --depth 1 origin 144c7a3a959cc99538b7dfee9c22c4b065a0e156 &&git -C "$tmp" sparse-checkout set -- skills/feature-doc &&git -C "$tmp" checkout -q 144c7a3a959cc99538b7dfee9c22c4b065a0e156 &&mkdir -p .agents/skills &&mkdir .agents/skills/feature-doc &&cp -R "$tmp"/skills/feature-doc/. .agents/skills/feature-doc/ &&rm -rf "$tmp"

Or use the skills CLI from skills.sh. Installs the latest version, not the one we checked. The skills CLI reports installs to skills.sh unless you set DISABLE_TELEMETRY=1.

npx skills@1.7.4 add huytieu/COG-second-brain --skill feature-doc

Agent Skills docs

Read SKILL.md first

MIT

Licence

1.3k

Repo stars

Folder last changed

Publisher

Files

Checked

29 Oct 2026

What it can touch

From the files and frontmatter at commit 144c7a3. This is how much a skill can do, not whether it is risky.

Runs shell commands
Its instructions or files give the agent commands to run on your computer.
Reaches the network
It sends or fetches data over the internet, for example with curl, an HTTP library or a package install.
Bundles scripts
The folder holds code files the agent may run.

Pattern check

Pattern check: nothing flagged · commit 144c7a3 · 29 Oct 2026

We checked every text file in this skill, at commit 144c7a3 on 29 Oct 2026, against 45 published patterns such as download-and-run commands, hidden text and credential access. We don't run the skill, we don't read the web pages it points to, and we can't judge everything its instructions might lead an agent to do. In published tests, pattern checks like this one missed most malicious skills. Read the skill before you install it — especially anything it asks you to download or run.

How the check works Report an incorrect finding

Format check

Each agent reads SKILL.md a little differently. We check the file against each one's published rules; we don't run the skill in any agent.

Agent Skills specPasses with warnings
The open format from agentskills.io, held to what the strictest agents enforce, so one folder loads everywhere.
- Warning
  The description contains < or >. Uploads to the Claude apps and API reject it. D3
  Fix: Remove < and >, or reword (for example "less than").
- Note
  There is no license field, so readers can't tell whether they may reuse the skill. O2
  Fix: Add license: with an SPDX name such as MIT or Apache-2.0, or the name of a bundled licence file.
Claude CodePasses
Claude apps & API uploadFails
Uploading to claude.ai or the Claude API, or packaging with Anthropic's script, accepts only the six spec fields and stops on anything else.
- Error
  The description contains < or >. Anthropic's validator rejects any angle bracket there. D3
  Fix: Remove < and >, or reword (for example "less than").
- Note
  The description is 472 characters. The claude.ai Help Center says 200 at most, though Anthropic's API docs and validator allow 1,024. D4
  Fix: If the claude.ai upload refuses it, trim the description to 200 characters.
OpenAI (Codex & API)Passes
VS Code & CopilotPasses with warnings
VS Code reads skills one folder below .github/skills, .claude/skills or .agents/skills and falls back to the folder name when the name is missing or differs; GitHub's Copilot docs require the exact name SKILL.md.
- Warning
  VS Code deletes text between < and > in a description, so "<feature>" would vanish. D3
  Fix: Remove the angle brackets or reword.

SKILL.md

Read SKILL.md on GitHub

Files

5 files

Path	Size
SKILL.md (opens in a new tab)	9.5 KB
tools/arcade-record.py (opens in a new tab)	7 KB
tools/recompose.py (opens in a new tab)	8.5 KB
tools/screenrec.py (opens in a new tab)	6 KB
tools/videokit.py (opens in a new tab)	9.8 KB

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At a glance

What it can touch

Pattern check

Install

Claude Code

Claude apps

Codex

Cursor

Copilot & VS Code

Gemini CLI

Any agent

What it can touch

Pattern check

Format check

SKILL.md

Files

More from huytieu/COG-second-brain

Other Writing & content skills