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Extension Toolchain

Category: General  ·  Sub-category: plugins-extensions  ·  Last updated:
Apply modern browser extension toolchain patterns: WXT (default), Plasmo, CRXJS for Chrome/Firefox/Safari extensions. Use when building browser extensions, choosing extension frameworks, or discussing manifest v3 patterns.

From the source SKILL.md

Modern browser extension development with Manifest V3, focusing on framework-agnostic solutions.

What this skill does

Extension Toolchain 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/extension-toolchain/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when building browser extensions, choosing extension frameworks, or discussing manifest v3 patterns.

Who uses this skill

The Extension Toolchain 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 70,000+ 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/extension-toolchain
curl -L https://claudskills.com/skills/extension-toolchain/SKILL.md \
  -o ~/.claude/skills/extension-toolchain/SKILL.md

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

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

Cite this skill

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

APA
ClaudSkills. (2026). Extension Toolchain [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/extension-toolchain/
BibTeX
@misc{extension-toolchain-2026,
  author    = {ClaudSkills},
  title     = {Extension Toolchain [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/extension-toolchain/}
}

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