How do I install the Utools Extension Skill Claude Code skill?

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

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.

ClaudSkills / Engineering / engineering-misc

Utools Extension Skill

Category: Engineering · Sub-category: engineering-misc

type:generator

Build, develop, and publish uTools plugins. Use when the user asks to create a uTools plugin, add features to an existing uTools plugin, query uTools APIs (utools.db, utools.ubrowser, utools.onPluginEnter, preload scripts, etc.), scaffold a uTools plugin project from scratch, debug or package a uTools plugin into .upx format, or migrate/upgrade a uTools plugin version. Covers the full lifecycle: project scaffolding, API reference lookup, feature implementation, debugging, packaging, and publishing.

What this skill does

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

When to invoke it: Use when the user asks to create a uTools plugin, add features to an existing uTools plugin, query uTools APIs (utools.db, utools.

Who uses this skill

The Utools Extension Skill skill is built for software engineers, backend developers, full-stack teams, and technical leads building and maintaining production systems. It is part of the open ClaudSkills registry, a community-curated catalog of 56,000+ capabilities you can install for Claude Code — the Claude CLI agent.

How to install

Free

Manual install (2 steps)

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

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

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

More Engineering skills

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

Browse all Engineering skills → Top 100 skills

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

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