authorized-web-pentest

authorized-web-pentest is a skill for Claude Code, Codex from metaspartan/cybara. It costs 25 tokens per session (461 once invoked), scanned A, original, MIT.

A guided process for testing a web application’s security with the owner’s permission and within a defined scope.

In plain words
What is it for?
Review source code and public endpoints, inspect headers and login surfaces, and assess issues such as injection, cross-site scripting, access-control mistakes, server-side request forgery, file handling, deserialization, and cross-origin settings.
Why use it?
It helps find security weaknesses while keeping testing limited to approved systems and recording evidence for each finding.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Review source code and public endpoints, inspect headers and login surfaces, and assess issues such as injection, cross-site scripting, access-control mistakes, server-side request forgery, file handling, deserialization, and cross-origin settings.

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Install with agentmods
npx agentmods add skills/metaspartan/cybara/authorized-web-pentest
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 metaspartan/cybara --skill authorized-web-pentest
Clone the repo
git clone --depth 1 https://github.com/metaspartan/cybara

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 authorized-web-pentest

README.md
[![agentmods](https://agentmods.dev/badge/skills/metaspartan/cybara/authorized-web-pentest/github.svg)](https://agentmods.dev/skills/metaspartan/cybara/authorized-web-pentest)
Your own site
<a href="https://agentmods.dev/skills/metaspartan/cybara/authorized-web-pentest"><img src="https://agentmods.dev/badge/skills/metaspartan/cybara/authorized-web-pentest/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 authorized-web-pentest

Your own site · 80×15
<a href="https://agentmods.dev/skills/metaspartan/cybara/authorized-web-pentest"><img src="https://agentmods.dev/badge/skills/metaspartan/cybara/authorized-web-pentest.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 25 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 461 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original 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 $0.00025 $0.00461
Opus 5 $0.00013 $0.00230
Sonnet 5 $0.00005 $0.00092
Haiku 4.5 $0.00003 $0.00046

Measured 10d ago against content hash f37cf4b0f1a6, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

authorized-web-pentest scanned grade A with 1 finding 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 10d 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.

Makes network callslowCapability

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

metadata: {"cybara":{"requires":{"anyBins":["curl","python3"]}}}
skills/authorized-web-pentest/SKILL.md · 54 lines

What it actually says

Authorized Web Pentest

Use this only for defensive testing of applications the user owns or has written authorization to test.

Authorization Gate

Before active testing, ask the user to confirm:

Confirm: the target URL is <target>, you own this application or have written authorization to test it, and active security testing is allowed during this session.

Do not send payloads or scans until the user confirms. Passive source review and reading public pages is fine.

Scope File

Create an engagement directory:

ENGAGEMENT="web-pentest-$(date +%Y%m%d-%H%M%S)"
mkdir -p "$ENGAGEMENT"/{evidence,findings,reports}
printf "%s\n" "<hostname>" > "$ENGAGEMENT/scope.txt"

Every active request must target a host in scope.txt. Stop on off-scope redirects.

Phases

  1. Setup:
    • Record authorization, target, scope, and time window.
  2. Passive/source recon:
    • Map routes, auth, sinks, trust boundaries, and deployment config from code.
  3. Read-only live recon:
    • Headers, robots/sitemap, public links, login surface, XHR endpoints.
  4. Vulnerability analysis:
    • Injection, XSS, auth/authz, SSRF, file handling, deserialization, CORS, security headers.
  5. Proof:
    • Every finding needs a reproducible request/response or code path.
    • No destructive payloads without explicit approval.
  6. Report:
    • Findings, severity, impact, evidence, reproduction, minimal fix.

Rules

  • No exploit, no report. Suspicions without proof are notes, not findings.
  • Rate-limit active requests.
  • Redact credentials and tokens in chat. Store full values only in local evidence files when needed.
  • Cloud metadata hosts are off-limits unless explicitly authorized and owned.
  • A clean run means "no exploitable issue found in this scope/time/method," not "secure."
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. 10d ago First seen · 54 lines · 25 tokens per session scan A f37cf4b0f1a6

Subscribe to this mod's changes

authorized-web-pentest is a skill published in the GitHub repository metaspartan/cybara (28 stars, last pushed today), licensed MIT. It adds 25 tokens to every session and 461 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.