How do I install the performing-security-testing Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/security-test-scanner/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 / Security / web-security

performing-security-testing

Category: Security · Sub-category: web-security · Last updated: 2026-05-21

type:scanner

This skill automates security vulnerability testing. It is triggered when the user requests security assessments, penetration tests, or vulnerability scans. The skill covers OWASP Top 10 vulnerabilities, SQL injection, XSS, CSRF, authentication issues, and authorization flaws. Use this skill when the user mentions "security test", "vulnerability scan", "OWASP", "SQL injection", "XSS", "CSRF", "authentication", or "authorization" in the context of application or API testing.

What this skill does

performing-security-testing is a community-contributed Claude Code skill in the web-security sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/security-test-scanner/ and loads when your prompt matches the skill's trigger.

Who uses this skill

The performing-security-testing Claude Code skill is built for security engineers, penetration testers, DevSecOps practitioners, and development teams hardening codebases and infrastructure. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 69,000+ 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/security-test-scanner
curl -L https://claudskills.com/skills/security-test-scanner/SKILL.md \
  -o ~/.claude/skills/security-test-scanner/SKILL.md

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

Skills live at ~/.claude/skills/security-test-scanner/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\security-test-scanner\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

Attribution & license

Source: https://github.com/jeremylongshore/claude-code-plugins-plus-skills/blob/HEAD/backups/skill-structure-cleanup-20251108-073936/plugins/testing/security-test-scanner/skills/security-test-scanner/SKILL.md
License: MIT
Author: jeremylongshore
Website: https://tonsofskills.com

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

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performing-security-testing

What this skill does

Who uses this skill

How to install

Manual install (2 steps)

One-click install via the desktop app

Attribution & license

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