What is securityEngineer?

A read-only security review guide for examining software and its configuration for vulnerabilities. It covers areas such as dependencies, secrets, access control, encryption, web-security risks, and threat modeling.

Use it for security audits, vulnerability assessments, secret scans, dependency and CVE reviews, access-control checks, cryptography reviews, and penetration-test analysis.

It provides a broad checklist for finding security problems before deployment or during an incident. It suggests remediation but does not silently modify the project.

securityEngineer — Skill for Claude Code by AlirezaSoltaniJazi

Install

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.

Any agent

npx skills add AlirezaSoltaniJazi/Skillnir --skill securityengineer

Clone the repo

git clone --depth 1 https://github.com/AlirezaSoltaniJazi/Skillnir

Made for: Claude Code.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/alirezasoltanijazi/skillnir/securityengineer/github.svg)](https://agentmods.dev/skills/alirezasoltanijazi/skillnir/securityengineer)

Your own site

<a href="https://agentmods.dev/skills/alirezasoltanijazi/skillnir/securityengineer"><img src="https://agentmods.dev/badge/skills/alirezasoltanijazi/skillnir/securityengineer/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/alirezasoltanijazi/skillnir/securityengineer"><img src="https://agentmods.dev/badge/skills/alirezasoltanijazi/skillnir/securityengineer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 79 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 3,027 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

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	$0.00079	$0.03027
Opus 5.5	$0.00032	$0.01211
Sonnet 5.5	$0.00016	$0.00605
Haiku 4.5	$0.00008	$0.00303

Measured 1mo ago against content hash 6016fad86275, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

securityEngineer 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.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/validate-security.sh), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

.data/skills/securityEngineer/SKILL.md · 168 lines

How it starts

The opening of the file, as written. The whole thing — 168 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Before You Start

Read LEARNED.md first. It holds corrections and conventions from previous sessions — they override defaults here, so skipping it means repeating mistakes already fixed.

Announce skill usage. Say "Using: securityEngineer skill" at the very start of your response before any work — the user needs to know which ruleset is driving the audit.

This skill is READ-ONLY. Security analysis never modifies code — a silent "fix" can mask the vulnerability or introduce a new one that no one reviews. Suggest remediation with code examples; never apply it.

When to Use

Security audit or vulnerability assessment of any project component
Pre-deploy security review or compliance check (OWASP, NIST, CIS)
Dependency audit, CVE triage, or supply chain risk assessment
Secret scanning, credential review, or cryptographic implementation review
Incident investigation or penetration test report review
Code review with security focus (injection, auth, access control)

Do NOT Use

Python backend development (API design, CLI logic, async patterns) — use backendEngineer
NiceGUI UI components/pages (Tailwind, Quasar, HTML) — use frontendEngineer
CI/CD, Docker, pre-commit hooks, workflows — use devopsEngineer
Skill system meta-rules (SKILL.md structure, LEARNED.md format) — use skillnir

Severity Classification

Severity	CVSS	Response	Finding prefix
Critical	≥ 9.0	Immediate — block release	`CRITICAL: CWE-XXX — description`
High	7.0–8.9	Fix before next deploy	`HIGH: CWE-XXX — description`
Medium	4.0–6.9	Fix within sprint	`MEDIUM: CWE-XXX — description`
Low	0.1–3.9	Track and fix when convenient	`LOW: CWE-XXX — description`
Info	0.0	Document for awareness	`INFO: description`

Read the full file on GitHub · 168 lines

Files

What ships with it

17 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.

Changes

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 Changed · -37 lines 6016fad86275
2mo ago First seen · 205 lines · 79 tokens per session scan A a7eb700a9d6c

Subscribe to this mod's changes

securityEngineer is a skill published in the GitHub repository AlirezaSoltaniJazi/Skillnir (9 stars, last pushed 12d ago), licensed MIT. It adds 79 tokens to every session and 3,027 once invoked, about $0.0003 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 2026-08-31.