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ClaudSkills / Security / web-security

Chrome Ext Security

Category: Security  ·  Sub-category: web-security  ·  Last updated:
type:audit
This skill should be used when working on security aspects of a Chrome extension or when the user asks about Chrome extension security best practices. Trigger when: implementing Content Security Policy in extensions, "extension CSP", "eval in extension", "content script security", "extension XSS", "remote code in extension", "MV3 security", "unsafe-eval", "content script isolation", "DOM safety in extension", "Trusted Types", "extension sandbox", "chrome extension security audit", "innerHTML in extension", "message validation".

From the source SKILL.md

MV3 enforces a strict security model. All executable code must be bundled locally. The Content Security Policy bans eval() and remote scripts. Content scripts operate in an isolated world but share a DOM with potentially hostile pages. The service worker is the trusted core — all messages from content scripts must be validated.

What this skill does

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

Who uses this skill

The Chrome Ext Security 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 69,000+ 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/chrome-ext-security
curl -L https://claudskills.com/skills/chrome-ext-security/SKILL.md \
  -o ~/.claude/skills/chrome-ext-security/SKILL.md

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

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

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

Attribution & license

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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