container-security

container-security is a skill for Claude Code, Codex from paruff/uFawkesAI. It costs 35 tokens per session (476 once invoked), scanned A, original, MIT.

A security check for container images, which package applications and their operating-system files for deployment. It checks the image contents, base image, user, ports, secrets, and signature.

In plain words
What is it for?
Use it to scan built images, check that they use a minimal base and do not run as root, and verify their signatures.
Why use it?
It helps catch vulnerable packages, unsafe image settings, and leaked secrets before an image is deployed.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions Claude Code; installed under .agents/ (shared by several agents); mentions Codex.

Good fit Use it to scan built images, check that they use a minimal base and do not run as root, and verify their signatures.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/paruff/ufawkesai/container-security
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 paruff/uFawkesAI --skill container-security
Clone the repo
git clone --depth 1 https://github.com/paruff/uFawkesAI

Made for: Claude Code, Codex.

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 container-security

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/paruff/ufawkesai/container-security"><img src="https://agentmods.dev/badge/skills/paruff/ufawkesai/container-security.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 35 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 476 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 $0.00035 $0.00476
Opus 5 $0.00017 $0.00238
Sonnet 5 $0.00007 $0.00095
Haiku 4.5 $0.00003 $0.00048

Measured 8d ago against content hash b36dfaaa4a98, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

container-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 8d 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.

.agents/skills/security-testing/container-security/SKILL.md · 86 lines

What it actually says

Skill: Container Image Security

Load trigger: "load container-security skill" > DORA: Cap 1 (AI Policy) Token cost: Low

Purpose

Ensure container images built by PIPE are secure, minimal, and free of vulnerabilities.

Responsibilities

  • Scan container images
  • Validate base image security
  • Validate OS package vulnerabilities
  • Validate image metadata

Inputs

  • Built image

Outputs

  • container.json
  • container-vulns.txt

Sub-Skills

Skill Purpose
container-security/vuln-scan Container vulnerability scanning
container-security/signature Image signature verification

Image Requirements

Requirement Rule
Base image Distroless or minimal
Latest tag Not used
Root user Not running as root
Ports Only required ports exposed
Secrets No secrets in image layers

Validation Rules

  • No critical vulnerabilities
  • Base image is distroless/minimal
  • Not running as root
  • No secrets in layers
  • Valid signature

Output Format

{
  "skill": "container-security",
  "status": "pass | fail",
  "image": "my-app:v1.3.0",
  "base_image": "distroless",
  "running_as_root": false,
  "vulnerabilities": {
    "critical": 0,
    "high": 0,
    "medium": 2,
    "low": 5
  },
  "signature_valid": true,
  "issues": []
}

Success Criteria

  • No critical vulnerabilities
  • Valid signature
  • Secure base image
Files

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.

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. 8d ago First seen · 86 lines · 35 tokens per session scan A b36dfaaa4a98

Subscribe to this mod's changes

container-security is a skill published in the GitHub repository paruff/uFawkesAI (2 stars, last pushed 19d ago), licensed MIT. It adds 35 tokens to every session and 476 once invoked, about $0.0002 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 2026-09-03.

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