Squirrelscan

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

Category: Security · Sub-category: security-misc · Last updated: 2026-07-18

type:audit

squirrelscan audits websites for SEO, performance, security, accessibility, content, and structured data issues (249+ rules) and scores site health, via the squirrel CLI. Use when the user wants to check, audit, or improve a website's SEO, ranking, speed, or health, and for anything squirrelscan itself, installing or updating the CLI, login and API keys, running audits, publishing and sharing reports, cloud credits, MCP server setup, configuration, or troubleshooting.

Security AStatic scan found no risk patternsHow grading works ›

About this skill (catalog notes)

Squirrelscan includes a dedicated installation section; pricing or quota commentary; 12 code blocks for direct copy-paste. The SKILL.md runs to about 1,215 words, in the catalog's typical mid-range.

Source: bg-szy.github.io/TOP-SKILLS
Original author: bg-szy
Indexed lastmod: 2026-07-18
Catalog position: Security · security-misc
Indexed related skills: 10

How Squirrelscan fits the catalog

Squirrelscan sits in the Security category under the security-misc sub-topic in the ClaudSkills catalog. There are 10 related skills indexed alongside it; comparing a few before installing usually reveals which fits your workflow best.

These notes are auto-generated from features detected in the SKILL.md file and from this catalog's structure — they aren't part of the source repository.

From the source SKILL.md

squirrelscan is a website audit tool built for AI agents. It answers "what's wrong with this website and how do I fix it": it crawls a site like a search engine, analyzes every page against 249+ rules in 21 categories (SEO, performance, security, accessibility, content, structured data, agent readiness, and more), and returns a health score plus concrete, fixable issues. Use it whenever a user wants their site checked, ranked better, faster, or healthier, before/after a deploy, or in CI.

What this skill does

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

When to invoke it: Use when the user wants to check, audit, or improve a website's SEO, ranking, speed, or health, and for anything squirrelscan itself, installing or updating the CLI, login and API keys, running audits, publishing and sharing reports, cloud credits, MCP server setup, configuration, or troubleshooting.

Who uses this skill

The Squirrelscan Claude Code skill is built for security engineers, penetration testers, DevSecOps practitioners, and development teams hardening codebases and infrastructure. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 153,000+ 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/squirrelscan
curl -L https://claudskills.com/skills/squirrelscan/SKILL.md \
  -o ~/.claude/skills/squirrelscan/SKILL.md

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

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

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

What does the Squirrelscan 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 Squirrelscan skill?

Use Squirrelscan when your Claude Code task falls under the Security category — specifically in the security 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 Squirrelscan" or describe the task and let Claude pick). Browse related skills at /category/security/.

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

Attribution & license

Source: https://github.com/bg-szy/TOP-SKILLS/blob/HEAD/skills/marketplace/squirrelscan/SKILL.md
Author: bg-szy
Website: https://bg-szy.github.io/TOP-SKILLS/

Cite this skill

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

APA

bg-szy. (2026). Squirrelscan [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/squirrelscan/

BibTeX

@misc{squirrelscan-2026,
  author    = {bg-szy},
  title     = {Squirrelscan [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/squirrelscan/}
}

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

Security scan

Grade A · scanned 2026-07-18 — 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/squirrelscan/#security)

More Security skills

Browse all Security skills in the ClaudSkills registry, or explore these other picks from the same category:

Browse all Security 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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