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 agentmods add skills/diillson/chatcli/vulnerability-scannernpx skills add diillson/chatcli --skill vulnerability-scannergit clone --depth 1 https://github.com/diillson/chatcliWrote 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/diillson/chatcli/vulnerability-scanner)<a href="https://agentmods.dev/skills/diillson/chatcli/vulnerability-scanner"><img src="https://agentmods.dev/badge/skills/diillson/chatcli/vulnerability-scanner.svg" alt="Measured on agentmods" height="20"></a>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 | $0.00028 | $0.01849 |
| Opus 5 | $0.00014 | $0.00924 |
| Sonnet 5 | $0.00006 | $0.00370 |
| Haiku 4.5 | $0.00003 | $0.00185 |
Grade A, and why
vulnerability-scanner 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 yesterday.
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.
This is a copy
94% identical to vulnerability-scanner — 2 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 277 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Vulnerability Scanner
Think like an attacker, defend like an expert. 2025 threat landscape awareness.
🔧 Runtime Scripts
Execute for automated validation:
| Script | Purpose | Usage |
|---|---|---|
scripts/security_scan.py |
Validate security principles applied | python scripts/security_scan.py <project_path> |
📋 Reference Files
| File | Purpose |
|---|---|
| checklists.md | OWASP Top 10, Auth, API, Data protection checklists |
1. Security Expert Mindset
Core Principles
| Principle | Application |
|---|---|
| Assume Breach | Design as if attacker already inside |
| Zero Trust | Never trust, always verify |
| Defense in Depth | Multiple layers, no single point |
| Least Privilege | Minimum required access only |
| Fail Secure | On error, deny access |
Threat Modeling Questions
Before scanning, ask:
- What are we protecting? (Assets)
- Who would attack? (Threat actors)
- How would they attack? (Attack vectors)
- What's the impact? (Business risk)
2. OWASP Top 10:2025
Risk Categories
| Rank | Category | Think About |
|---|---|---|
| A01 | Broken Access Control | Who can access what? IDOR, SSRF |
| A02 | Security Misconfiguration | Defaults, headers, exposed services |
| A03 | Software Supply Chain 🆕 | Dependencies, CI/CD, build integrity |
| A04 | Cryptographic Failures | Weak crypto, exposed secrets |
| A05 | Injection | User input → system commands |
| A06 | Insecure Design | Flawed architecture |
| A07 | Authentication Failures | Session, credential management |
| A08 | Integrity Failures | Unsigned updates, tampered data |
| A09 | Logging & Alerting | Blind spots, no monitoring |
| A10 | Exceptional Conditions 🆕 | Error handling, fail-open states |
2025 Key Changes
2021 → 2025 Shifts:
├── SSRF merged into A01 (Access Control)
├── A02 elevated (Cloud/Container configs)
├── A03 NEW: Supply Chain (major focus)
├── A10 NEW: Exceptional Conditions
└── Focus shift: Root causes > Symptoms
What ships with it
2 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.
- yesterday First seen · 277 lines · 28 tokens per session scan A 8dfe6febffb0
vulnerability-scanner is a skill published in the GitHub repository diillson/chatcli (90 stars, last pushed today), licensed Apache-2.0. It adds 28 tokens to every session and 1,849 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 94% identical to vulnerability-scanner, differing in 2 lines, and is treated as a copy.
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