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performing-security-headers-audit
92 / 100 · Low risk
Fine to try. Some of what it can do is expected: a security skill usually runs scanners and checks websites.
By plurigrid/asi (GitHub) · security · 72 stars · scanned at commit 293ce9f
Auditing HTTP security headers including CSP, HSTS, X-Frame-Options, and cookie attributes to identify missing or misconfigured browser-level protections.
Works with any agent that supports SKILL.md skills.
What this skill can do
Sends data to these websites: target.example.com, target.example.com$page, [^
This is disclosed by the author in the skill's SKILL.md or README. Expected for a security skill.
Found in 21 places.
Show 17 more
- plugins/asi/skills/performing-security-headers-audit/SKILL.md, line 56
curl -s -I "https://target.example.com/" | head -20 - plugins/asi/skills/performing-security-headers-audit/SKILL.md, line 65
curl -s -I "https://target.example.com/" | grep -i "strict-transport-security" - plugins/asi/skills/performing-security-headers-audit/SKILL.md, line 75
curl -s -I "http://target.example.com/" | head -5 - plugins/asi/skills/performing-security-headers-audit/SKILL.md, line 82
curl -s -I "https://target.example.com/login" | grep -i "set-cookie" - plugins/asi/skills/performing-security-headers-audit/SKILL.md, line 86
curl -s "https://target.example.com/" | grep -oP "http://[^\"']+" | head -20 - plugins/asi/skills/performing-security-headers-audit/SKILL.md, line 96
CSP=$(curl -s -I "https://target.example.com/" | grep -i "content-security-policy" | cut -d: -f2-) - plugins/asi/skills/performing-security-headers-audit/SKILL.md, line 120
curl -s -I "https://target.example.com/" | grep -i "content-security-policy-report-only" - plugins/asi/skills/performing-security-headers-audit/SKILL.md, line 137
curl -s -I "https://target.example.com/" | grep -i "x-frame-options" - plugins/asi/skills/performing-security-headers-audit/SKILL.md, line 142
curl -s -I "https://target.example.com/" | grep -i "content-security-policy" | grep -o "frame-ancestors[^;]*" - plugins/asi/skills/performing-security-headers-audit/SKILL.md, line 146
curl -s -I "https://target.example.com/" | grep -i "x-content-type-options" - plugins/asi/skills/performing-security-headers-audit/SKILL.md, line 150
curl -s -I "https://target.example.com/" | grep -i "x-xss-protection" - plugins/asi/skills/performing-security-headers-audit/SKILL.md, line 155
curl -s -I "https://target.example.com/" | grep -i "referrer-policy" - plugins/asi/skills/performing-security-headers-audit/SKILL.md, line 166
curl -s -I -L "https://target.example.com/login" | grep -i "set-cookie" - plugins/asi/skills/performing-security-headers-audit/SKILL.md, line 177
curl -s -I "https://target.example.com/login" | grep -i "set-cookie" | while read line; do - plugins/asi/skills/performing-security-headers-audit/SKILL.md, line 201
curl -s -I "https://target.example.com/" | grep -i "permissions-policy" - plugins/asi/skills/performing-security-headers-audit/SKILL.md, line 207
curl -s -I "https://target.example.com/" | grep -iE "(cross-origin-embedder|cross-origin-opener|cross-origin-resource)" - plugins/asi/skills/performing-security-headers-audit/SKILL.md, line 213
curl -s -I "https://target.example.com/" | grep -iE "(server|x-powered-by|x-aspnet|x-generator)"
and 1 more places
Runs commands on your computer
The author does not mention this. Expected for a security skill.
Found in 6 places.
Show 3 more
Install
Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.
if [ -e ~/.agents/skills/'performing-security-headers-audit' ] || [ -L ~/.agents/skills/'performing-security-headers-audit' ]; then echo 'A skill folder named performing-security-headers-audit already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/plurigrid/asi' "$d" && git -C "$d" checkout --quiet '293ce9f76e3abcd5ba18db284688bc0d9ac6691d' -- 'plugins/asi/skills/performing-security-headers-audit' && mkdir -p ~/.agents/skills && cp -R "$d"/'plugins/asi/skills/performing-security-headers-audit' ~/.agents/skills/'performing-security-headers-audit' && rm -rf "$d"; fi
Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'performing-security-headers-audit' ~/.claude/skills/'performing-security-headers-audit' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.
Badge for your README
The badge for plurigrid/asi shows the score of its lowest-scoring skill.
[](https://zalavijaysinh.github.io/skilltrust/repos/plurigrid/asi/)
Score history
| Date | Version | Score |
|---|
| 2026-11-07 | 293ce9f | 92 |