gstack

gstack is a skill in garrytan/gstack, last changed 26 Oct 2026. It can run shell commands, reach the network, name web addresses and bundle scripts — read the findings before installing. Our pattern check flagged nothing at commit a50cf58 on 26 Oct 2026.

Pattern check: nothing flagged · commit a50cf58 · 26 Oct 2026

Install

From the author

Install and use gstack in Capy and Claude Code. Load at session start to check this machine, and for gstack planning, code review, debugging, QA, design, security, documentation, and shipping workflows.

Licence: MIT
Repo stars: 137.8k
Folder last changed: 26 Oct 2026 (opens in a new tab)
Publisher: garrytan
Files: 3 files
Checked: a50cf58 (opens in a new tab) · 26 Oct 2026

Install

Each tab says whether it installs commit a50cf58, the one we checked, or the latest version.

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

Pinned to commit a50cf58, the one we checked.

From your project's root folder:

tmp="$(mktemp -d)" &&
  git clone -q --depth 1 --filter=blob:none --no-checkout https://github.com/garrytan/gstack.git "$tmp" &&
  git -C "$tmp" fetch -q --depth 1 origin a50cf589656c0dc3f785af9b7c483861b13c8288 &&
  git -C "$tmp" sparse-checkout set -- capy/skill/gstack &&
  git -C "$tmp" checkout -q a50cf589656c0dc3f785af9b7c483861b13c8288 &&
  mkdir -p .claude/skills &&
  mkdir .claude/skills/gstack &&
  cp -R "$tmp"/capy/skill/gstack/. .claude/skills/gstack/ &&
  rm -rf "$tmp"

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

Claude Code docs

Pinned to commit a50cf58, the one we checked.

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

Make gstack.zip, with the skill folder at the top level:

tmp="$(mktemp -d)" &&
  git clone -q --depth 1 --filter=blob:none --no-checkout https://github.com/garrytan/gstack.git "$tmp" &&
  git -C "$tmp" fetch -q --depth 1 origin a50cf589656c0dc3f785af9b7c483861b13c8288 &&
  git -C "$tmp" sparse-checkout set -- capy/skill/gstack &&
  git -C "$tmp" checkout -q a50cf589656c0dc3f785af9b7c483861b13c8288 &&
  out="$(mktemp -d)" &&
  cp -R "$tmp"/capy/skill/gstack "$out"/gstack &&
  (cd "$out" && zip -qr - gstack) > gstack.zip &&
  rm -rf "$tmp" "$out"

In Claude, open Customize > Skills, select +, then + Create skill > Upload a skill, and choose gstack.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 a50cf58, the one we checked.

From your project's root folder:

tmp="$(mktemp -d)" &&
  git clone -q --depth 1 --filter=blob:none --no-checkout https://github.com/garrytan/gstack.git "$tmp" &&
  git -C "$tmp" fetch -q --depth 1 origin a50cf589656c0dc3f785af9b7c483861b13c8288 &&
  git -C "$tmp" sparse-checkout set -- capy/skill/gstack &&
  git -C "$tmp" checkout -q a50cf589656c0dc3f785af9b7c483861b13c8288 &&
  mkdir -p .agents/skills &&
  mkdir .agents/skills/gstack &&
  cp -R "$tmp"/capy/skill/gstack/. .agents/skills/gstack/ &&
  rm -rf "$tmp"

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

Codex docs

Pinned to commit a50cf58, the one we checked.

From your project's root folder:

tmp="$(mktemp -d)" &&
  git clone -q --depth 1 --filter=blob:none --no-checkout https://github.com/garrytan/gstack.git "$tmp" &&
  git -C "$tmp" fetch -q --depth 1 origin a50cf589656c0dc3f785af9b7c483861b13c8288 &&
  git -C "$tmp" sparse-checkout set -- capy/skill/gstack &&
  git -C "$tmp" checkout -q a50cf589656c0dc3f785af9b7c483861b13c8288 &&
  mkdir -p .cursor/skills &&
  mkdir .cursor/skills/gstack &&
  cp -R "$tmp"/capy/skill/gstack/. .cursor/skills/gstack/ &&
  rm -rf "$tmp"

Cursor docs

Pinned to commit a50cf58, the one we checked.

From your project's root folder:

tmp="$(mktemp -d)" &&
  git clone -q --depth 1 --filter=blob:none --no-checkout https://github.com/garrytan/gstack.git "$tmp" &&
  git -C "$tmp" fetch -q --depth 1 origin a50cf589656c0dc3f785af9b7c483861b13c8288 &&
  git -C "$tmp" sparse-checkout set -- capy/skill/gstack &&
  git -C "$tmp" checkout -q a50cf589656c0dc3f785af9b7c483861b13c8288 &&
  mkdir -p .github/skills &&
  mkdir .github/skills/gstack &&
  cp -R "$tmp"/capy/skill/gstack/. .github/skills/gstack/ &&
  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 garrytan/gstack capy/skill/gstack/SKILL.md@a50cf589656c0dc3f785af9b7c483861b13c8288 --agent github-copilot --scope project

Copilot & VS Code docs

Pinned to commit a50cf58, the one we checked.

From your project's root folder:

tmp="$(mktemp -d)" &&
  git clone -q --depth 1 --filter=blob:none --no-checkout https://github.com/garrytan/gstack.git "$tmp" &&
  git -C "$tmp" fetch -q --depth 1 origin a50cf589656c0dc3f785af9b7c483861b13c8288 &&
  git -C "$tmp" sparse-checkout set -- capy/skill/gstack &&
  git -C "$tmp" checkout -q a50cf589656c0dc3f785af9b7c483861b13c8288 &&
  mkdir -p .gemini/skills &&
  mkdir .gemini/skills/gstack &&
  cp -R "$tmp"/capy/skill/gstack/. .gemini/skills/gstack/ &&
  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/garrytan/gstack.git --path capy/skill/gstack --scope workspace

Gemini CLI docs

Pinned to commit a50cf58, the one we checked.

Codex, Cursor, Copilot, VS Code, Gemini CLI, OpenCode, Goose, Amp and Zed all read .agents/skills; Claude Code and Kiro list only their own folders.

From your project's root folder:

tmp="$(mktemp -d)" &&
  git clone -q --depth 1 --filter=blob:none --no-checkout https://github.com/garrytan/gstack.git "$tmp" &&
  git -C "$tmp" fetch -q --depth 1 origin a50cf589656c0dc3f785af9b7c483861b13c8288 &&
  git -C "$tmp" sparse-checkout set -- capy/skill/gstack &&
  git -C "$tmp" checkout -q a50cf589656c0dc3f785af9b7c483861b13c8288 &&
  mkdir -p .agents/skills &&
  mkdir .agents/skills/gstack &&
  cp -R "$tmp"/capy/skill/gstack/. .agents/skills/gstack/ &&
  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 garrytan/gstack --skill gstack

Agent Skills docs

What it can touch

From the files and frontmatter at commit a50cf58. This is how much a skill can do, not whether it is risky.

What it can touch: Shell, network or credentials

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.
Names web addresses
It mentions outside web addresses the agent may visit. We list them but don't follow them.
Bundles scripts
The folder holds code files the agent may run.

Pattern check

Pattern check: nothing flagged · commit a50cf58 · 26 Oct 2026

We checked every text file in this skill, at commit a50cf58 on 26 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

Outside links we did not follow

https://github.com/garrytan/gstack.git

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
The open format from agentskills.io, held to what the strictest agents enforce, so one folder loads everywhere.
- 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.
- Note
  Reference files over 100 lines with no table of contents at the top: captain.md (127 lines). B5
  Fix: Add a short list of the sections at the top of each.
Claude CodePasses
Claude Code reads its own extra fields, ignores unknown ones, and still loads a skill whose frontmatter is broken, without its fields.
- Note
  Reference files over 100 lines with no table of contents at the top: captain.md (127 lines). B5
  Fix: Add a short list of the sections at the top of each.
Claude apps & API uploadPasses
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.
- Note
  The description is 202 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.
- Note
  Reference files over 100 lines with no table of contents at the top: captain.md (127 lines). B5
  Fix: Add a short list of the sections at the top of each.
OpenAI (Codex & API)Passes
VS Code & CopilotPasses

SKILL.md

Files

3 files

Path	Size
SKILL.md (opens in a new tab)	15.4 KB
captain.md (opens in a new tab)	8.3 KB
scripts/install.sh (opens in a new tab)	9.7 KB

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All skills in garrytan/gstack

Install

What it can touch

Pattern check

Outside links we did not follow

Format check

SKILL.md

Files

More from garrytan/gstack

autoplan

benchmark

benchmark-models

canary

captain

codex