Custom Rules

Quality score: 80/100 · Category: Engineering · Sub-category: languages

lang:ruby

Use when the user runs /ruby-upgrade-toolkit:rules or asks to add, list, validate, show, remove, disable, enable, or explain project-specific upgrade rules — gem pins, gem swaps, private-source substitutions (Rails LTS, Sidekiq Pro), verification gates (Brakeman, Reek), policy overrides. Reads and writes .ruby-upgrade-toolkit/rules.yml at the project root.

What this skill does

Custom Rules is a well-rated Claude Code skill (quality score 80/100) in the languages sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/rules/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when the user runs /ruby-upgrade-toolkit:rules or asks to add, list, validate, show, remove, disable, enable, or explain project-specific upgrade rules — gem pins, gem swaps, private-source substitutions (Rails LTS, Sidekiq Pro), verification gates (Brakeman, Reek), policy overrides. Reads and writes .

Who uses this skill

The Custom Rules 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 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/rules
curl -L https://claudskills.com/skills/rules/SKILL.md \
  -o ~/.claude/skills/rules/SKILL.md

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

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