Comprehensive security rules for writing secure code across 15+ languages. Covers OWASP Top 10, infrastructure security, and coding best practices with 28 rule categories.
Code Security is a community-contributed Claude Code skill in the security-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/code-security/ and loads when your prompt matches the skill's trigger.
When to invoke it: Use when writing code, reviewing code for vulnerabilities, or asking about secure coding practices like ''check for SQL injection'' or ''review security''. IMPORTANT: Always consult this skill when writing or reviewing any code that handles user input, authentication, file operations, database queries, network requests, cryptography, or infrastructure configuration (Terraform, Kubernetes, Docker, GitHub Actions) — even if the user doesn''t explicitly mention security.
The Code Security 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).
mkdir -p ~/.claude/skills/code-security curl -L https://claudskills.com/skills/code-security/SKILL.md \ -o ~/.claude/skills/code-security/SKILL.md
Or just download SKILL.md directly and drop it into ~/.claude/skills/code-security/. Claude Code auto-discovers it on next session.
Skills live at ~/.claude/skills/code-security/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\code-security\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.
For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.
Browse all Security skills in the ClaudSkills registry, or explore these other picks from the same category:
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SKILL.md files, not affiliated with, endorsed by, or sponsored by Anthropic.