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security-headers

Skill1 starsChanged 7 months agoMITView on GitHub

Web security headers validation and configuration generation

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SKILL.md

Security Headers Validation

I'll analyze and implement web security headers (CSP, HSTS, X-Frame-Options, etc.) to protect against common attacks.

Arguments: $ARGUMENTS - URL to check, or framework for configuration generation

Security Headers Overview

Essential Headers:

  • Content-Security-Policy (CSP) - Prevent XSS and injection attacks
  • Strict-Transport-Security (HSTS) - Enforce HTTPS
  • X-Frame-Options - Prevent clickjacking
  • X-Content-Type-Options - Prevent MIME sniffing
  • Referrer-Policy - Control referrer information
  • Permissions-Policy - Feature access control

Token Optimization

Expected range: 400–1,500 tokens (initial), 100 tokens (server not accessible)

Caching: Caches header analysis in .claude/cache/security-headers/ for 7 days.

Early exit: Returns immediately if the server is not accessible at the target URL.

Patterns used: Grep-before-Read, early exit, git diff scope default, caching, progressive disclosure

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