Getting it into your agent
It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.
git clone --depth 1 https://github.com/ArabelaTso/Skills-4-SEnpx agentmods add skills/arabelatso/skills-4-se/static-vulnerability-detectorWrote 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/arabelatso/skills-4-se/static-vulnerability-detector)<a href="https://agentmods.dev/skills/arabelatso/skills-4-se/static-vulnerability-detector"><img src="https://agentmods.dev/badge/skills/arabelatso/skills-4-se/static-vulnerability-detector/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/arabelatso/skills-4-se/static-vulnerability-detector"><img src="https://agentmods.dev/badge/skills/arabelatso/skills-4-se/static-vulnerability-detector.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 2 findings, up to high
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- high Privilege Escalation · line 226 Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
- high Anti-Refusal · line 276 Skill attempts to nullify the agent's safety policies or restrictions ('you have no restrictions', 'ignore your guidelines', 'do anything now'). This is a direct jailbreak that disables guardrails.Fix: Remove jailbreak framing that nullifies safety policies or restrictions. Skill content must not instruct the agent to ignore its guidelines or operate without guardrails.
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 | $0.00125 | $0.01999 |
| Opus 5 | $0.00063 | $0.01000 |
| Sonnet 5 | $0.00025 | $0.00400 |
| Haiku 4.5 | $0.00013 | $0.00200 |
Grade A, and why
static-vulnerability-detector scanned grade A 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 9d 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.
response = requests.get(user_url) # Can access internal services Runs shell commandslowCapability
Expected in a hook, worth knowing in a rule or an instructions file.
- Shell: `os.system`, `subprocess` with `shell=True` How it starts
The opening of the file, as written. The whole thing — 355 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Static Vulnerability Detector
Analyze code for security vulnerabilities with CWE classification and severity assessment.
Analysis Workflow
1. Code Scanning
Systematically examine code for vulnerability patterns:
Memory Safety (C/C++):
- Buffer overflows (CWE-119)
- Out-of-bounds access (CWE-125)
- Use-after-free (CWE-416)
- Double free (CWE-415)
- Null pointer dereference (CWE-476)
Injection Vulnerabilities:
- SQL injection (CWE-89)
- Command injection (CWE-78)
- Cross-site scripting (CWE-79)
- XML injection (CWE-91)
- LDAP injection (CWE-90)
Authentication & Authorization:
- Missing authentication (CWE-306)
- Improper authentication (CWE-287)
- Missing authorization (CWE-862)
- Hard-coded credentials (CWE-798)
Cryptographic Issues:
- Weak algorithms (CWE-327)
- Inadequate encryption (CWE-326)
- Weak random values (CWE-330)
- Missing encryption (CWE-311)
Deserialization:
- Untrusted deserialization (CWE-502)
- Mass assignment (CWE-915)
Input Validation:
- Improper validation (CWE-20)
- Path traversal (CWE-22)
- SSRF (CWE-918)
2. Pattern Matching
For each vulnerability category, identify:
Dangerous Functions:
- C/C++:
strcpy,sprintf,gets,scanf - Python:
pickle.loads,eval,exec - SQL: String concatenation in queries
- Shell:
os.system,subprocesswithshell=True
Unsafe Patterns:
- Unvalidated user input
- Missing bounds checking
- Weak cryptographic algorithms
- Hard-coded secrets
- Missing authentication decorators
Context Analysis:
- Data flow from user input to sink
- Sanitization and validation presence
- Authentication/authorization checks
- Error handling adequacy
3. Severity Assessment
Assign severity based on:
CRITICAL:
- Remote code execution possible
- Authentication bypass
- SQL injection with admin access
- Arbitrary file read/write
HIGH:
- Privilege escalation
- Sensitive data exposure
- Hard-coded credentials
- Weak cryptography for sensitive data
MEDIUM:
- Information disclosure
- Denial of service
- Missing input validation
- Insecure configuration
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.
- 9d ago First seen · 355 lines · 125 tokens per session scan A b2bb0fddc550
static-vulnerability-detector is a skill published in the GitHub repository ArabelaTso/Skills-4-SE (252 stars, last pushed 22d ago), licensed Apache-2.0. It adds 125 tokens to every session and 1,999 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it A with 2 findings (makes network calls, runs shell commands). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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