VulnClaw is an AI-driven command-line penetration-testing agent that turns natural-language instructions into an automated workflow for reconnaissance, vulnerability discovery, exploitation, and report generation. It is intended for authorized penetration tests, CTF competitions, security teaching, and red-team exercises, using LLMs and MCP tools. The catalogue contains its specialized skills for security-testing tasks.
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.
npx skills add Netw0rkNoob/VulnClaw --skill web-pentestgit clone --depth 1 https://github.com/Netw0rkNoob/VulnClawWrote 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/netw0rknoob/vulnclaw/web-pentest)<a href="https://agentmods.dev/skills/netw0rknoob/vulnclaw/web-pentest"><img src="https://agentmods.dev/badge/skills/netw0rknoob/vulnclaw/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.
<a href="https://agentmods.dev/skills/netw0rknoob/vulnclaw/web-pentest"><img src="https://agentmods.dev/badge/skills/netw0rknoob/vulnclaw/web-pentest.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00043 | $0.00477 |
| Opus 5 | $0.00022 | $0.00238 |
| Sonnet 5 | $0.00009 | $0.00095 |
| Haiku 4.5 | $0.00004 | $0.00048 |
Grade A, and why
web-pentest 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 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.
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.
Copies of this mod
1 near-identical copy found in the catalogue:
- web-pentest — 100% identical, 0 lines differ
What it actually says
Web 应用渗透测试 Skill
针对 Web 应用的专项渗透测试流程，覆盖从信息收集到漏洞验证的完整链路。
需要更深入的 Web 安全知识？ 使用 web-security-advanced Skill，包含完整的注入攻击族、协议安全、Playbook 等。
1. 技术栈识别
- 使用 fetch 工具获取 HTTP 响应头
- 使用 chrome-devtools 工具分析前端技术
- 识别后端框架和 CMS
2. 目录枚举
- 常见目录：/admin, /api, /upload, /config, /backup
- 敏感文件：robots.txt, sitemap.xml, .env, .git/HEAD
- API 文档：/swagger, /docs, /api-docs
3. 认证测试
- 默认凭据测试
- 暴力破解检测
- 会话管理缺陷
- JWT 安全测试
4. 输入验证测试
- SQL 注入
- XSS（反射/存储/DOM）
- SSRF
- LFI/RFI
- 命令注入
- 文件上传
5. 逻辑漏洞测试
- 越权访问（水平/垂直）
- 业务逻辑绕过
- 竞态条件
- 支付逻辑漏洞
6. 输出
- Web 渗透报告
- PoC 脚本
参考文档
references/web-injection.md— 注入攻击详细参考references/web-logic-auth.md— 认证与逻辑漏洞references/web-modern-protocols.md— 现代协议安全
What ships with it
3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 10d ago First seen · 56 lines · 43 tokens per session scan A b231e7dfb5d6
web-pentest is a skill published in the GitHub repository Netw0rkNoob/VulnClaw (3,284 stars, last pushed 5d ago), licensed MIT. It adds 43 tokens to every session and 477 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 2026-08-30.
Other skills, from other repositories
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Manage a preinstalled local Minecraft Java client asynchronously for CTF and automation workflows. Use when an agent needs to launch Minecraft in offline mode with alternate usernames, inspect Minecraft logs, focus or type into the X11 game window, send chat or slash commands quickly, or join a multiplayer server by…
sagemath
Run SageMath through an explicit override, a detected environment named sage, or a PATH-resolved command. Use for CTF and cryptography work involving asymmetric cryptography, finite fields, elliptic curves, lattices, polynomial algebra, modular arithmetic, discrete logs, small-root attacks, or PRNG cryptanalysis.
opencrow-crypto-toolbox
Use the best available portable Python runtime and installed crypto tooling for CTF tasks that fit normal Python or CLI cracking rather than SageMath. Prefer a detected ctf environment. Use when an agent needs z3, fpylll, pycryptodome, hashcat, john, or quick FactorDB lookups.
opencrow-reversing-toolbox
Use the best available portable Python runtime and installed reverse-engineering tooling for binary analysis, symbolic execution, disassembly, emulation, and binary patching. Prefer a detected ctf environment. Use when an agent needs angr, claripy, capstone, unicorn, ghidra-headless, radare2, objdump, strace, ltrace…