OWASP
Systematic audit against the OWASP 2021 Top 10 web application security risks with severity-rated, file-level findings. Checks A01 Broken Access Control (IDOR, path traversal, CORS, privilege escalation), A02 Cryptographic Failures (weak algorithms, exposed secrets, missing TLS), A03 Injection (SQL, NoSQL, command, XSS, LDAP, XPath, template injection), A04 Insecure Design (missing rate limiting, business logic flaws, race conditions), A05 Security Misconfiguration (debug mode, default credentials, missing security headers, CSP), A06 Vulnerable Components (dependency CVEs, outdated frameworks, EOL runtimes), A07 Auth Failures (weak passwords, session fixation, missing MFA), A08 Data Integrity (insecure deserialization, CI/CD integrity, dependency confusion), A09 Logging Failures (missing security events, PII in logs, log injection), A10 SSRF (user-supplied URLs, cloud metadata access, DNS rebinding). Use for web app security audits, pre-release security checks, or compliance evidence gathering.
Security AStatic scan found no risk patternsHow grading works ›
From the source SKILL.md
You are in AUTONOMOUS MODE. Do NOT ask questions. Audit every OWASP category systematically.
What this skill does
OWASP 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/owasp/ and loads when your prompt matches the skill's trigger.
Who uses this skill
The OWASP 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 174,000+ 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/owasp
curl -L https://claudskills.com/skills/owasp/SKILL.md \
-o ~/.claude/skills/owasp/SKILL.md
Or just download SKILL.md directly and drop it into ~/.claude/skills/owasp/. Claude Code auto-discovers it on next session.
Skills live at ~/.claude/skills/owasp/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\owasp\SKILL.md on Windows. See the full install guide for step-by-step instructions.
Telegram
📱 Install from your phone or desktop Telegram
Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →
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.
Frequently asked questions
How do I install the OWASP Claude Code skill?
Install via the ClaudSkills desktop app (one click) or copy
SKILL.md from the source repository to
~/.claude/skills/owasp/SKILL.md and restart Claude Code. Both flows are detailed at
claudskills.com/install/.
What does the OWASP skill do?
Systematic audit against the OWASP 2021 Top 10 web application security risks with severity-rated, file-level findings. Checks A01 Broken Access Control (IDOR, path traversal, CORS, privilege escalation), A02 Cryptographic Failures (weak algorithms, exposed secrets, missing TLS), A03 Injection (SQL, NoSQL, command, XSS, LDAP, XPath, template injection), A04 Insecure Design (missing rate limiting, business logic flaws, race conditions), A05 Security Misconfiguration (debug mode, default credentials, missing security headers, CSP), A06 Vulnerable Components (dependency CVEs, outdated frameworks, EOL runtimes), A07 Auth Failures (weak passwords, session fixation, missing MFA), A08 Data Integrity (insecure deserialization, CI/CD integrity, dependency confusion), A09 Logging Failures (missing security events, PII in logs, log injection), A10 SSRF (user-supplied URLs, cloud metadata access, DNS rebinding). Use for web app security audits, pre-release security checks, or compliance evidence gathering.
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.
When should I use the OWASP skill?
Use OWASP when your Claude Code task falls under the Security category — specifically in the web security area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use OWASP" or describe the task and let Claude pick). Browse related skills at
/category/security/.
What is a Claude Code skill and how does the OWASP skill fit in?
A Claude Code skill is a
SKILL.md file that lives under
~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. OWASP is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Security category. Learn more at
/learn/what-is-a-claude-skill/.
Attribution & license
Cite this skill
If you reference this skill in a blog post, paper, or documentation, you can cite it as:
APA
anmolnagpal. (2026). OWASP [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/owasp/
BibTeX
@misc{owasp-2026,
author = {anmolnagpal},
title = {OWASP [Claude Code skill]},
year = {2026},
publisher = {ClaudSkills},
url = {https://claudskills.com/skills/owasp/}
}Embed this skill
Promote, attribute, or link this skill from your own README, blog post, or documentation. All three snippets are free to use — no sign-up, no API key. More distribution surfaces →
Badge
[](https://claudskills.com/skills/owasp/?utm_source=badge&utm_medium=readme&utm_campaign=skill_badge)
<script>
<script src="https://claudskills.com/embed/owasp.js" async></script>
<iframe>
<iframe src="https://claudskills.com/embed/owasp.html" width="100%" height="160" frameborder="0" loading="lazy" title="ClaudSkills: OWASP"></iframe>
Security scan
Grade A · scanned 2026-08-02 — free static scan against the OWASP Agentic Skills Top 10.
The scan flagged 2 of 10 categories (execution, network), including lower-severity patterns. Patterns shown inside code fences are weighted as examples rather than instructions — read the grading methodology for what this does and does not guarantee.
- ✓ Prompt injection
- ✓ Data exfiltration
- ✓ Supply chain
- ✓ Reverse shell
- ✓ Credentials
- ⚠ Execution
- ✓ Filesystem
- ✓ Persistence
- ✓ Obfuscation
- ⚠ Network
Show this grade on your repo (click to copy):
[](https://claudskills.com/skills/owasp/#security)
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