Getting it into your agent
It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.
git clone --depth 1 https://github.com/JansenAnalytics/claudexnpx agentmods add skills/jansenanalytics/claudex/security-auditWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/jansenanalytics/claudex/security-audit)<a href="https://agentmods.dev/skills/jansenanalytics/claudex/security-audit"><img src="https://agentmods.dev/badge/skills/jansenanalytics/claudex/security-audit/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/jansenanalytics/claudex/security-audit"><img src="https://agentmods.dev/badge/skills/jansenanalytics/claudex/security-audit.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00039 | $0.00437 |
| Opus 5 | $0.00019 | $0.00218 |
| Sonnet 5 | $0.00008 | $0.00087 |
| Haiku 4.5 | $0.00004 | $0.00044 |
Grade A, and why
security-audit scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
security-audit
Security auditing: vulnerability scanning, dependency checking, port scanning, permission review. Use when: auditing project security, scanning for CVEs in dependencies, checking open ports, reviewing file permissions, or hardening a deployment.
Workflows
Scan dependencies for vulnerabilities
bash scripts/dep-checker.sh [directory]
Auto-detects project type (npm/pip/cargo) and runs the appropriate audit tool.
Scan open ports
bash scripts/port-scanner.sh [host] [port-range]
Scans a host for open TCP ports. Default: localhost, ports 1-1024.
Audit file permissions
bash scripts/permission-auditor.sh [directory]
Finds world-writable files, SUID/SGID binaries, files owned by root in user dirs, and insecure config files.
Check HTTP security headers
bash scripts/header-checker.sh <url>
Checks for missing security headers (CSP, HSTS, X-Frame-Options, etc.).
Scripts
| Script | Purpose |
|---|---|
scripts/dep-checker.sh |
Dependency vulnerability scanner |
scripts/port-scanner.sh |
TCP port scanner |
scripts/permission-auditor.sh |
File permission auditor |
scripts/header-checker.sh |
HTTP security header checker |
References
| File | Contents |
|---|---|
references/owasp-top10.md |
OWASP Top 10 summary |
references/hardening-checklist.md |
Server/app hardening checklist |
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 5d ago First seen · 62 lines · 39 tokens per session scan A c8cebbf7f94f
security-audit is a skill published in the GitHub repository JansenAnalytics/claudex (5 stars, last pushed 2mo ago), licensed MIT. It adds 39 tokens to every session and 437 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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