Semgrep Rule Creator is a well-rated Claude Code skill (quality score 85/100) in the appsec-tools sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/semgrep-rule-creator/ and loads when your prompt matches the skill's trigger.
When to invoke it: Use when writing Semgrep rules or building custom static analysis detections.
The Semgrep Rule Creator 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.
mkdir -p ~/.claude/skills/semgrep-rule-creator curl -L https://claudskills.com/skills/semgrep-rule-creator/SKILL.md \ -o ~/.claude/skills/semgrep-rule-creator/SKILL.md
Or just download SKILL.md directly and drop it into ~/.claude/skills/semgrep-rule-creator/. Claude Code auto-discovers it on next session.
Skills live at ~/.claude/skills/semgrep-rule-creator/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\semgrep-rule-creator\SKILL.md on Windows. See the full install guide for step-by-step instructions.
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.
Browse all Security skills in the ClaudSkills registry, or explore these top-rated picks from the same category: