Claude Code
Codex
Cursor
GitHub Copilot
Gemini CLIAbout this skill
Audit a target's HTTP security headers — CSP, HSTS, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, Permissions-Policy, and the Cross-Origin trio (COOP, COEP, CORP). Use when: SOC2 / PCI auditor flagged "missing security headers" or a Mozilla Observatory grade is below B, OR you need HSTS preload eligibility for chrome://net-internals. Threshold: any missing required header on production HTML response, HSTS max-age below 31536000s (preload requirement), CSP with 'unsafe-inline' or 'unsafe-eval', X-Frame-Options absent AND CSP frame-ancestors absent (clickjacking), Cache-Control allowing public cache on authenticated endpoint. Trigger with: "audit security headers", "check csp", "hsts check", "header posture".
Quick start
- Copy the install prompt. Use the green button above this README.
- Send it to your agent. Paste it into your coding agent’s chat and send.
- Review the setup. Your agent checks the skill’s instructions, requirements, and installation scope.
Review, license & listing details
This is an imported listing. We haven’t certified its safety, license, or compatibility. Skills may include executable scripts.
Only SKILL.md was scanned. Supporting files and scripts were not checked. No safety grade has been assigned.
0 potential findings · Scanned 11/4/2026 · Scanner 0.2.1
Content SHA-256: ed3f8aa94e76dc5cd0f31e39e41a786f4adcb797179a354ed6c0c30c796bea35
About this listing
- Category
- Security
- Reported license
- MIT
- Listing language (estimated)
- English
- Review status
- Not individually reviewed
- Agent compatibility
- Atlas installation supports Claude Code, Codex, and Cursor. Skill-specific dependencies and features are checked during setup.