security-engineer

security-engineer is a skill for Claude Code from UnitOneAI/SecuritySkills. It costs 72 tokens per session (3,952 once invoked), scanned A, original, MIT.

A security engineering guide for protecting applications, software delivery pipelines, and infrastructure. A CI/CD pipeline is the automated process that builds, tests, and deploys software.

In plain words
What is it for?
It helps review code, secure CI/CD pipelines, respond to vulnerabilities, and assess cloud environments, identity permissions, firewalls, and other infrastructure changes.
Why use it?
It organizes security work across development and operations, so issues such as vulnerable dependencies, exposed secrets, and weak deployment controls are handled systematically.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Good fit It helps review code, secure CI/CD pipelines, respond to vulnerabilities, and assess cloud environments, identity permissions, firewalls, and other infrastructure changes.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/unitoneai/securityskills/security-engineer
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 UnitOneAI/SecuritySkills --skill security-engineer
Clone the repo
git clone --depth 1 https://github.com/UnitOneAI/SecuritySkills

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.

agentmods badge for security-engineer

README.md
[![agentmods](https://agentmods.dev/badge/skills/unitoneai/securityskills/security-engineer/github.svg)](https://agentmods.dev/skills/unitoneai/securityskills/security-engineer)
Your own site
<a href="https://agentmods.dev/skills/unitoneai/securityskills/security-engineer"><img src="https://agentmods.dev/badge/skills/unitoneai/securityskills/security-engineer/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.

agentmods 80×15 button for security-engineer

Your own site · 80×15
<a href="https://agentmods.dev/skills/unitoneai/securityskills/security-engineer"><img src="https://agentmods.dev/badge/skills/unitoneai/securityskills/security-engineer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 72 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,952 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00072 $0.03952
Opus 5.5 $0.00029 $0.01581
Sonnet 5.5 $0.00014 $0.00790
Haiku 4.5 $0.00007 $0.00395

Measured 1mo ago against content hash f15f6387fc70, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

security-engineer 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.

roles/security-engineer/SKILL.md · 361 lines

How it starts

The opening of the file, as written. The whole thing — 361 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Security Engineer Role Bundle

A structured engineering guide for embedding security into products, pipelines, and infrastructure. This bundle replaces one-off security reviews with repeatable engagement patterns that produce hardened systems, verified remediations, and measurable reduction in vulnerability surface.


When to Use

Invoke this role bundle when any of the following conditions are true:

  • Code review needed. A new feature, service, or significant code change requires security review before merging or deploying. The review needs to go beyond linting — it requires understanding of the application's threat model.
  • CI/CD pipeline hardening. The engineering team wants to secure the software delivery pipeline: build integrity, secrets management, dependency verification, container image security, and deployment controls.
  • Vulnerability response. A new CVE affects the organization's stack, a scanner has produced findings that need triage and prioritization, or a penetration test report needs remediation planning.
  • Infrastructure security review. A new environment, cloud account, or infrastructure change requires security validation — IAM policies, firewall rules, container configurations, or network segmentation.

If the ask is a program-level concern (e.g., "assess our overall security maturity"), use the vciso role bundle instead. This bundle is for hands-on engineering work.

Skills: All skills referenced in this bundle are available: secure-code-review, cve-triage, pipeline-security, iam-review, threat-modeling, dependency-scanning, sast-config, secrets-management, container-security, patch-prioritization, scanner-tuning, firewall-review.


Engagement Types

Each engagement type defines a skill sequence. Run the skills in order — each one produces outputs consumed by the next.

1. Code Review

Trigger: New feature branch, pull request with security-sensitive changes, or pre-release security review of a service.

Read the full file on GitHub · 361 lines

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.

  1. 1mo ago First seen · 361 lines · 72 tokens per session scan A f15f6387fc70

Subscribe to this mod's changes

security-engineer is a skill published in the GitHub repository UnitOneAI/SecuritySkills (85 stars, last pushed 3mo ago), licensed MIT. It adds 72 tokens to every session and 3,952 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 2026-08-30.

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