tool-web-security-audit

tool-web-security-audit is a skill for Claude Code, Codex from iamasters-academy/iamasters-os. It costs 98 tokens per session (5,830 once invoked), scanned C, original, no licence file.

A defensive web-security checker for websites you own or are authorised to test. It checks common OWASP risks, known CVEs, CORS, headers, databases, login systems, request limits and injection attacks, then creates an HTML report.

In plain words
What is it for?
Pre-launch security checks, black-box penetration testing, vulnerability reports and remediation planning.
Why use it?
It helps find security weaknesses before attackers do and records evidence for fixing them. Use it only with permission.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Good fit Pre-launch security checks, black-box penetration testing, vulnerability reports and remediation planning.

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Install with agentmods
npx agentmods add skills/iamasters-academy/iamasters-os/tool-web-security-audit
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add iamasters-academy/iamasters-os --skill tool-web-security-audit
Clone the repo
git clone --depth 1 https://github.com/iamasters-academy/iamasters-os

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for tool-web-security-audit

README.md
[![agentmods](https://agentmods.dev/badge/skills/iamasters-academy/iamasters-os/tool-web-security-audit/github.svg)](https://agentmods.dev/skills/iamasters-academy/iamasters-os/tool-web-security-audit)
Your own site
<a href="https://agentmods.dev/skills/iamasters-academy/iamasters-os/tool-web-security-audit"><img src="https://agentmods.dev/badge/skills/iamasters-academy/iamasters-os/tool-web-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.

agentmods 80×15 button for tool-web-security-audit

Your own site · 80×15
<a href="https://agentmods.dev/skills/iamasters-academy/iamasters-os/tool-web-security-audit"><img src="https://agentmods.dev/badge/skills/iamasters-academy/iamasters-os/tool-web-security-audit.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 98 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,830 The whole file, excluding the scripts and references it only reads on demand.
Security scan C 4 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00098 $0.05830
Opus 5 $0.00049 $0.02915
Sonnet 5 $0.00020 $0.01166
Haiku 4.5 $0.00010 $0.00583

Measured 9d ago against content hash d3e6da651f03, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade C, and why

tool-web-security-audit scanned grade C with 4 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 9d 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.

Sends data to an external URLlowData exfiltration

A POST to an outside endpoint may be telemetry or may be exfiltration; either way the mod talks to somewhere, and you should know where.

curl -s -X POST "https://TARGET" -H "Next-Action: 0000000000" -H "Content-Type: text/plain" -d '[]'

Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.

Downloads and executes remote codemediumSupply chain

curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.

curl -s "https://crt.sh/?q=%25.TARGET&output=json" | python3 -c "import sys,json; [print(x['name_value']) for x in json.load(sys.stdin)]" 2>/dev/null | sort -u

Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.

Recursive force deletemediumDestructive command

rm -rf with a variable or a broad path is one typo away from removing the wrong tree.

9. Limpiar archivos temporales al finalizar: `rm -rf /tmp/audit_*`

Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

Las webs modernas tienen superficies de ataque enormes: APIs abiertas, bases de datos con RLS mal configurado, headers de seguridad ausentes, y CVEs en frameworks populares. Un atacante con conocimientos basicos y curl p
skills-library/tools/tool-web-security-audit/SKILL.md · 454 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

Changes

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.

  1. 9d ago First seen · 454 lines · 98 tokens per session scan C d3e6da651f03

Subscribe to this mod's changes

tool-web-security-audit is a skill published in the GitHub repository iamasters-academy/iamasters-os (21 stars, last pushed 21d ago), with no licence file. It adds 98 tokens to every session and 5,830 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it C with 4 findings (sends data to an external url, downloads and executes remote code, recursive force delete). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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