Gan

Q: What is a Claude Code skill and how does the Gan skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Gan is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Dev Tools category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: Dev Tools · Sub-category: scaffolders · Last updated: 2026-05-28

type:generator

Generator-Evaluator iteration loop for building features against a scored rubric. Use when user says "gan", "gan loop", "generator evaluator", "iterate to threshold", "build with feedback loop", or needs an iteration pattern stronger than `/loop` for feature work that has a measurable quality signal. Do NOT use for one-shot implementations (use `/plan` + direct edits), recurring schedules (use `/loop`), or visual design exploration (use `/design variants`).

From the source SKILL.md

Run a planner → generator → evaluator loop with a score-gated stop condition. The planner expands the brief into acceptance criteria and a rubric. The generator implements against the criteria. The evaluator scores the result, returns feedback. The loop iterates until the score crosses the threshold or the iteration cap is hit.

What this skill does

Gan is a community-contributed Claude Code skill in the scaffolders sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/gan/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when user says "gan", "gan loop", "generator evaluator", "iterate to threshold", "build with feedback loop", or needs an iteration pattern stronger than `/loop` for feature work that has a measurable quality signal. Do NOT use for one-shot implementations (use `/plan` + direct edits), recurring schedules (use `/loop`), or visual design exploration (use `/design variants`).

Who uses this skill

The Gan Claude Code skill is built for developers, power users, and teams automating repetitive workflows and improving developer experience. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 116,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/gan
curl -L https://claudskills.com/skills/gan/SKILL.md \
  -o ~/.claude/skills/gan/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/gan/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/gan/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\gan\SKILL.md on Windows. See the full install guide for step-by-step instructions.

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Gan Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/gan/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the Gan skill do?

Is this skill free to install?

Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.

When should I use the Gan skill?

Use Gan when your Claude Code task falls under the Dev Tools category — specifically in the scaffolders area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Gan" or describe the task and let Claude pick). Browse related skills at /category/tools/.

What is a Claude Code skill and how does the Gan skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Gan is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Dev Tools category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Source: https://github.com/gufranco/claude-engineering-rules/blob/HEAD/skills/gan/SKILL.md
License: MIT
Author: gufranco

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA

gufranco. (2026). Gan [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/gan/

BibTeX

@misc{gan-2026,
  author    = {gufranco},
  title     = {Gan [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/gan/}
}

Embed this skill

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Badge

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Gan