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/apiliumcode/mayros/code-securitynpx skills add ApiliumCode/mayros --skill code-securitygit clone --depth 1 https://github.com/ApiliumCode/mayrosWhat 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 | $0.00016 | $0.00478 |
| Opus 5 | $0.00008 | $0.00239 |
| Sonnet 5 | $0.00003 | $0.00096 |
| Haiku 4.5 | $0.00002 | $0.00048 |
Grade A, and why
code-security 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 2d 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.
What it actually says
code-security
Classifies code vulnerabilities by OWASP Top 10 categories and CWE identifiers, providing severity ratings for each finding.
When to Use
Use this skill when:
- Reviewing code snippets stored in the knowledge graph for security vulnerabilities
- Performing automated security audits on code content
- Classifying findings by CWE identifier and severity level before human review
Vulnerability Coverage
The skill detects 12 vulnerability classes:
| CWE | Category | Severity |
|---|---|---|
| CWE-89 | SQL Injection | critical |
| CWE-79 | Cross-Site Scripting (XSS) | high |
| CWE-78 | Command Injection | critical |
| CWE-22 | Path Traversal | high |
| CWE-502 | Insecure Deserialization | high |
| CWE-798 | Hardcoded Secrets | critical |
| CWE-95 | Code Injection | critical |
| CWE-918 | Server-Side Request Forgery (SSRF) | high |
| CWE-327 | Weak Cryptography | medium |
| CWE-601 | Open Redirect | medium |
| CWE-209 | Information Exposure | low |
| CWE-306 | Missing Authentication | medium |
Instructions
- Store code content in the graph using
skill_assertor other write tools - Query with predicate
security:findingto trigger the code-security runtime - The skill enriches each result with a
findingsarray containing CWE IDs and severity levels - Use
security:vulnerability(with proof) to record confirmed vulnerabilities - Query
security:historyto review past audit results for the current agent
What ships with it
9 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.
- 2d ago First seen · 60 lines · 16 tokens per session scan A 987494944bac
code-security is a skill published in the GitHub repository ApiliumCode/mayros (12 stars, last pushed 1mo ago), licensed MIT. It adds 16 tokens to every session and 478 once invoked, about $0.0001 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.
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