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 gmh5225/awesome-skills --skill security-skillsgit clone --depth 1 https://github.com/gmh5225/awesome-skillsWrote 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/gmh5225/awesome-skills/security-skills)<a href="https://agentmods.dev/skills/gmh5225/awesome-skills/security-skills"><img src="https://agentmods.dev/badge/skills/gmh5225/awesome-skills/security-skills/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/gmh5225/awesome-skills/security-skills"><img src="https://agentmods.dev/badge/skills/gmh5225/awesome-skills/security-skills.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 | $0.00026 | $0.00616 |
| Opus 5.5 | $0.00010 | $0.00246 |
| Sonnet 5.5 | $0.00005 | $0.00123 |
| Haiku 4.5 | $0.00003 | $0.00062 |
Grade A, and why
security-skills-guide 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 1mo 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.
How it starts
The opening of the file, as written. The whole thing — 92 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Security Skills Guide
Scope
Use this skill when:
- Finding or adding security-related skills
- Understanding cybersecurity skill categories
- Organizing security skills in README.md
Security Skill Categories
Penetration Testing
| Category | Skills |
|---|---|
| Web Application | Burp Suite, FFUF fuzzing, SQL injection, XSS testing |
| Network | Nmap, Wireshark, SMTP/SSH testing |
| Cloud | AWS/Azure/GCP penetration testing |
| Active Directory | Kerberoasting, DCSync, pass-the-hash |
Code Auditing
| Category | Skills |
|---|---|
| Static Analysis | CodeQL, Semgrep, Slither |
| Smart Contracts | Solidity security, Move auditing |
| Variant Analysis | Finding similar vulnerabilities |
Threat Hunting
| Category | Skills |
|---|---|
| Detection Rules | Sigma rules, YARA |
| Forensics | File metadata, memory analysis |
| Incident Response | Triage, investigation |
Key Security Skill Repositories
Trail of Bits Security Team
trailofbits/skills- Static analysis, code auditing, smart contracts
Antigravity Collection
sickn33/antigravity-awesome-skills- 50+ cybersecurity skills
Community Skills
mhattingpete/claude-skills-marketplace- Computer forensics skills
Where to Add Security Skills in README
- Penetration testing tools:
Cybersecurity & Penetration Testing - Code analysis tools:
Security & SystemsorDevelopment & Code Tools - Threat hunting:
Security & Systems - Smart contract security:
Development & Code Tools(if dev-focused)
Security Skill Best Practices
- Clear scope: Define what the skill does and doesn't do
- Legal warnings: Include responsible use disclaimers
- Tool requirements: List required external tools
- Safe defaults: Use non-destructive operations by default
- Logging: Include audit trail capabilities
Example Security Skill Structure
threat-hunting/
├── SKILL.md # Main instructions
├── scripts/
│ ├── sigma-search.py
│ └── log-parser.sh
├── references/
│ └── sigma-rules.md
└── templates/
└── report.md
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.
- 1mo ago First seen · 92 lines · 26 tokens per session scan A 00cd8d2fc666
security-skills-guide is a skill published in the GitHub repository gmh5225/awesome-skills (97 stars, last pushed 4d ago), licensed MIT. It adds 26 tokens to every session and 616 once invoked, about $0.0001 per session on Opus 5.5. 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.
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