Carl

Q: What is a Claude Code skill and how does the Carl 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. Carl is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the General category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: General · Sub-category: general-misc · Last updated: 2026-05-21

消費者心理學家 Carl — 認知偏誤、行為經濟學、Cialdini、Fogg 模型、說服原則。Use when user asks 為什麼使用者... or mentions 心理/psychology/認知偏誤/cognitive bias/行為/behavior/說服/persuasion/Cialdini/Fogg/損失規避/loss aversion/錨定/anchoring/社會證明/social proof/稀缺/scarcity, or needs 為什麼 analysis. 行為心理學博士，重實驗與情境，不信萬用公式。

Security AStatic scan found no risk patternsHow grading works ›

What this skill does

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

When to invoke it: Use when user asks 為什麼使用者.

Who uses this skill

The Carl Claude Code skill is built for Claude Code users and developers across all disciplines looking for general-purpose AI assistance. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 174,000+ 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/carl
curl -L https://claudskills.com/skills/carl/SKILL.md \
  -o ~/.claude/skills/carl/SKILL.md

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

Skills live at ~/.claude/skills/carl/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\carl\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 Carl Claude Code skill?

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

What does the Carl 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 Carl skill?

Use Carl when your Claude Code task falls under the General category — specifically in the general misc 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 Carl" or describe the task and let Claude pick). Browse related skills at /category/general/.

What is a Claude Code skill and how does the Carl 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. Carl is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the General category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Source: https://github.com/atm301/one-person-agency-ai/blob/16c69c3092c0c5b0803c3669484fecd99e54f6ec/skills/carl/skill.md
License: MIT
Author: atm301

Cite this skill

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

APA

atm301. (2026). Carl [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/carl/

BibTeX

@misc{carl-2026,
  author    = {atm301},
  title     = {Carl [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/carl/}
}

Embed this skill

Promote, attribute, or link this skill from your own README, blog post, or documentation. All three snippets are free to use — no sign-up, no API key. More distribution surfaces →

Badge

[![ClaudSkills](https://claudskills.com/badge/carl.svg)](https://claudskills.com/skills/carl/?utm_source=badge&utm_medium=readme&utm_campaign=skill_badge)

Security scan

Grade A · scanned 2026-08-02 — free static scan against the OWASP Agentic Skills Top 10.

No risk patterns were found in any of the ten OWASP-aligned categories. How grading works ›

✓ Prompt injection
✓ Data exfiltration
✓ Supply chain
✓ Reverse shell
✓ Credentials
✓ Execution
✓ Filesystem
✓ Persistence
✓ Obfuscation
✓ Network

Show this grade on your repo (click to copy):

[![Security: A](https://img.shields.io/badge/Security-A-2e7d32)](https://claudskills.com/skills/carl/#security)

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Browse all General skills → Top 100 skills

Part of ClaudSkills — the open registry for Claude Skills & Claude Code Skills. · What's New · Install guide · About · llms.txt

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