Vibe-Coding-Dev-Setup: Skill for Claude Code

.github/skills/penetration-tester/SKILL.md

penetration-tester is a skill for Claude Code, Codex from AndreasKarz/Vibe-Coding-Dev-Setup. It costs 144 tokens per session (3,991 once invoked), scanned B, original, no licence file.

A set of instructions for assessing the security of web applications, APIs, and cloud infrastructure.

In plain words
What is it for?
Use it for penetration tests, vulnerability analysis, security audits, attack-surface reviews, and threat modelling, including checks for issues such as XSS, CSRF, and injection.
Why use it?
It helps an agent approach security reviews consistently when looking for weaknesses or modelling possible attacks.

Skill for Claude CodeCodex

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

This is AndreasKarz/Vibe-Coding-Dev-Setup's own configuration. It tells Claude Code and Codex how to work on Vibe-Coding-Dev-Setup itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything Vibe-Coding-Dev-Setup configures →

Reuse

Borrowing it

Nothing to install: this file belongs to AndreasKarz/Vibe-Coding-Dev-Setup. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/AndreasKarz/Vibe-Coding-Dev-Setup/main/.github/skills/penetration-tester/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/AndreasKarz/Vibe-Coding-Dev-Setup

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 penetration-tester

README.md
[![agentmods](https://agentmods.dev/badge/skills/andreaskarz/vibe-coding-dev-setup/penetration-tester/github.svg)](https://agentmods.dev/skills/andreaskarz/vibe-coding-dev-setup/penetration-tester)
Your own site
<a href="https://agentmods.dev/skills/andreaskarz/vibe-coding-dev-setup/penetration-tester"><img src="https://agentmods.dev/badge/skills/andreaskarz/vibe-coding-dev-setup/penetration-tester/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 penetration-tester

Your own site · 80×15
<a href="https://agentmods.dev/skills/andreaskarz/vibe-coding-dev-setup/penetration-tester"><img src="https://agentmods.dev/badge/skills/andreaskarz/vibe-coding-dev-setup/penetration-tester.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 144 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,991 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 2 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 $0.00144 $0.03991
Opus 5.5 $0.00058 $0.01596
Sonnet 5.5 $0.00029 $0.00798
Haiku 4.5 $0.00014 $0.00399

Measured 2mo ago against content hash 0d66d35ce606, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade B, and why

penetration-tester scanned grade B with 2 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 2mo 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.

Cloud metadata endpointmediumServer-side request forgery

One request to 169.254.169.254 can return temporary IAM credentials.

https://target/api/validate-url?url=http://169.254.169.254/latest/meta-data/

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.

curl -X POST https://target/graphql \
.github/skills/penetration-tester/SKILL.md · 469 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. 2mo ago First seen · 469 lines · 144 tokens per session scan B 0d66d35ce606

Subscribe to this mod's changes

penetration-tester is a skill published in the GitHub repository AndreasKarz/Vibe-Coding-Dev-Setup (7 stars, last pushed 8mo ago), with no licence file. It adds 144 tokens to every session and 3,991 once invoked, about $0.0006 per session on Opus 5.5. A static security scan graded it B with 2 findings (cloud metadata endpoint, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Related

penetration-tester compared with skills from other repositories

penetration-tester next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
penetration-testerAndreasKarz/Vibe-Coding-Dev-SetupSkill78mo agononeB144Claude Code, Codex
self-improvementandreaswasita/copilot-agents-dojoSkill542mo agoMITA12Claude Code, Codex
building-mcp-serversandreaswasita/copilot-agents-dojoSkill542mo agoMITA17Claude Code, Codex
requirements-elicitationandreaswasita/copilot-agents-dojoSkill542mo agoMITA13Claude Code, Codex
subagent-strategyandreaswasita/copilot-agents-dojoSkill542mo agoMITA16Claude Code, Codex
using-superpowersandreaswasita/copilot-agents-dojoSkill542mo agoMITA16Claude Code, Codex
verify-before-doneandreaswasita/copilot-agents-dojoSkill542mo agoMITA20Claude Code, Codex