What is review-security-k8s-storage?

A security review for Kubernetes storage settings, including persistent volumes and container mount points.

Use it to check read-only mounts, host-path usage, access modes, encryption, cleanup policies, expansion limits, and storage-driver secrets.

It helps find ways storage could expose data or give a container more access than it needs.

How gke-labs/kube-agents configures Claude Code and Codex

Reuse

Borrowing it

Nothing to install: this file belongs to gke-labs/kube-agents. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/gke-labs/kube-agents/main/.agents/skills/review-security-k8s-storage/SKILL.md

Clone the repo

git clone --depth 1 https://github.com/gke-labs/kube-agents

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/gke-labs/kube-agents/review-security-k8s-storage/github.svg)](https://agentmods.dev/skills/gke-labs/kube-agents/review-security-k8s-storage)

Your own site

<a href="https://agentmods.dev/skills/gke-labs/kube-agents/review-security-k8s-storage"><img src="https://agentmods.dev/badge/skills/gke-labs/kube-agents/review-security-k8s-storage/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/gke-labs/kube-agents/review-security-k8s-storage"><img src="https://agentmods.dev/badge/skills/gke-labs/kube-agents/review-security-k8s-storage.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 27 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 352 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. Third-party audits

NVIDIA SkillSpector pass 7 Sept 2026

How audits are shown

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	$0.00027	$0.00352
Opus 5	$0.00014	$0.00176
Sonnet 5	$0.00005	$0.00070
Haiku 4.5	$0.00003	$0.00035

Measured 12d ago against content hash c7e2c86a8c9b, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

review-security-k8s-storage 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 12d 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/review-security-k8s-storage/SKILL.md · 23 lines

What it actually says

Task

Review storage configurations (StorageClass, PersistentVolume, PVC), Volumes, and VolumeMounts to prevent data leaks and privilege escalation.

Checks

1. Volume Mount Security

Read-Only: Flag VolumeMounts missing readOnly: true for writable types (PVCs, hostPath, emptyDir) unless write is required.
subPath Abuse: Flag subPath on volumes writable by untrusted users (symlink breakout risk).
hostPath: Flag hostPath usage. Recommend local PVs.
fsGroup: Require fsGroup in securityContext to avoid running containers as root for storage access.

2. StorageClass & PV Security

Access Modes: Flag ReadWriteMany (RWX). Require ReadWriteOnce (RWO) or ReadOnlyMany (ROX) to reduce blast radius.
Encryption: Require StorageClasses to enforce encryption at rest (e.g., CMEK, encrypted: "true").
Reclaim Policies: Flag deprecated Recycle. Flag Retain on sensitive volumes without automated wipe processes.
Volume Expansion: Flag allowVolumeExpansion: true without strict namespace ResourceQuotas (DoS risk).

3. CSI Drivers

CSI Secrets: For CSI Secrets Store, require strict limits on mountable secrets and cloud identity access.

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.

12d ago First seen · 23 lines · 27 tokens per session scan A c7e2c86a8c9b

Subscribe to this mod's changes

review-security-k8s-storage is a skill published in the GitHub repository gke-labs/kube-agents (54 stars, last pushed today), licensed Apache-2.0. It adds 27 tokens to every session and 352 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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kube-agents: Skill for Claude Code