Browser Extension Dev

Quality score: 70/100 · Category: Security · Sub-category: security-misc

Browser extension development with security and cross-browser support. Use when: - Building Chrome, Firefox, or Safari extensions - Requesting permissions in manifest - Implementing content scripts or background workers - Handling cross-browser compatibility - Planning extension updates Keywords: browser extension, Manifest V3, content script, background script, permissions, Chrome extension, Firefox addon, WebExtensions API

What this skill does

Browser Extension Dev is a production-ready Claude Code skill (quality score 70/100) in the security-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/browser-extension-dev/ and loads when your prompt matches the skill's trigger.

Who uses this skill

The Browser Extension Dev skill is built for security engineers, penetration testers, DevSecOps practitioners, and development teams hardening codebases and infrastructure. It is part of the open ClaudSkills registry, a community-curated catalog of 15,000+ capabilities you can install for Claude Code — the Claude CLI agent.

How to install

Free

Manual install (2 steps)

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

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

Skills live at ~/.claude/skills/browser-extension-dev/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\browser-extension-dev\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.

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

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