ClaudSkills / General / plugins-extensions

Browser Extension

Q: What is a Claude Code skill and how does the Browser Extension 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. Browser Extension 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: plugins-extensions · Last updated: 2026-05-21

Master specialized skill for building 2025/2026-grade browser extensions. Deep expertise in Manifest v3, Service Worker persistence (Alarms, Offscreen API), Side Panel API, and Cross-Browser compatibility.

From the source SKILL.md

<domain_overview> # 🌐 BROWSER EXTENSION: THE 2026 MASTERCLASS > Philosophy: Extensions are ephemeral, restricted, yet powerful. Persistence is an Art. Security is a Mandate. > Design Constraint: For UI/UX, Aesthetics, and Layout, YOU MUST REFER TO THE frontend-design SKILL. PERSISTENCE PARADOX GUARD (CRITICAL): Never rely on global variables or in-memory state in background scripts. AI-generated code frequently fails by assuming Manifest V3 service workers are persistent. They are NOT; they terminate after 30 seconds of inactivity. You MUST backup every piece of state to chrome.storage or…

What this skill does

Browser Extension is a community-contributed Claude Code skill in the plugins-extensions sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/browser-extension/ and loads when your prompt matches the skill's trigger.

Who uses this skill

The Browser Extension 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 119,000+ 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/browser-extension
curl -L https://claudskills.com/skills/browser-extension/SKILL.md \
  -o ~/.claude/skills/browser-extension/SKILL.md

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

Skills live at ~/.claude/skills/browser-extension/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\browser-extension\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 Browser Extension Claude Code skill?

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

What does the Browser Extension 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 Browser Extension skill?

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

What is a Claude Code skill and how does the Browser Extension 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. Browser Extension 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/.

Cite this skill

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

APA

ClaudSkills. (2026). Browser Extension [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/browser-extension/

BibTeX

@misc{browser-extension-2026,
  author    = {ClaudSkills},
  title     = {Browser Extension [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/browser-extension/}
}

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

More General skills

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

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

Part of Acreator Store — Adam Lankamer's AI tools: PerfectStudio · Ucaption · UTagger · AutoXPoster · TestYourSkills · AutomationFlows · Au Naturel · Telegram @acreatorstore