Cognitive Fallacies Guard
Detects and prevents visual misleads, cognitive biases, and data integrity violations in visualizations, dashboards, reports, and presentations. Audits charts for honesty, diagnoses misinterpretation causes, and provides specific fixes. Invoke when user mentions chartjunk, misleading chart, truncated axis, data integrity, visual deception, 3D chart problems, cherry-picking data, or needs to audit visualizations for accuracy. For general design evaluation, use `design-evaluation-audit`. For cognitive foundations, use `cognitive-design`.
What this skill does
Cognitive Fallacies Guard is a community-contributed Claude Code skill in the design-creative sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/cognitive-fallacies-guard/ and loads when your prompt matches the skill's trigger.
Who uses this skill
The Cognitive Fallacies Guard 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 121,000+ 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/cognitive-fallacies-guard
curl -L https://claudskills.com/skills/cognitive-fallacies-guard/SKILL.md \
-o ~/.claude/skills/cognitive-fallacies-guard/SKILL.md
Or just download SKILL.md directly and drop it into ~/.claude/skills/cognitive-fallacies-guard/. Claude Code auto-discovers it on next session.
Skills live at ~/.claude/skills/cognitive-fallacies-guard/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\cognitive-fallacies-guard\SKILL.md on Windows. See the full install guide for step-by-step instructions.
Telegram
📱 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.
Frequently asked questions
How do I install the Cognitive Fallacies Guard Claude Code skill?
Install via the ClaudSkills desktop app (one click) or copy
SKILL.md from the source repository to
~/.claude/skills/cognitive-fallacies-guard/SKILL.md and restart Claude Code. Both flows are detailed at
claudskills.com/install/.
What does the Cognitive Fallacies Guard skill do?
Detects and prevents visual misleads, cognitive biases, and data integrity violations in visualizations, dashboards, reports, and presentations. Audits charts for honesty, diagnoses misinterpretation causes, and provides specific fixes. Invoke when user mentions chartjunk, misleading chart, truncated axis, data integrity, visual deception, 3D chart problems, cherry-picking data, or needs to audit visualizations for accuracy. For general design evaluation, use `design-evaluation-audit`. For cognitive foundations, use `cognitive-design`.
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 Cognitive Fallacies Guard skill?
Use Cognitive Fallacies Guard when your Claude Code task falls under the General category — specifically in the design creative 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 Cognitive Fallacies Guard" or describe the task and let Claude pick). Browse related skills at
/category/general/.
What is a Claude Code skill and how does the Cognitive Fallacies Guard 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. Cognitive Fallacies Guard 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
Cite this skill
If you reference this skill in a blog post, paper, or documentation, you can cite it as:
APA
lyndonkl. (2026). Cognitive Fallacies Guard [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/cognitive-fallacies-guard/
BibTeX
@misc{cognitive-fallacies-guard-2026,
author = {lyndonkl},
title = {Cognitive Fallacies Guard [Claude Code skill]},
year = {2026},
publisher = {ClaudSkills},
url = {https://claudskills.com/skills/cognitive-fallacies-guard/}
}Embed this skill
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