review-security-k8s-namespaces SKILL.md skillA
review-security-k8s-namespaces from gke-labs/kube-agents is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add gke-labs/kube-agents/review-security-k8s-namespaces@git:20260521.2bcbdefPins git:20260521.2bcbdef in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- gke-labs/kube-agents
- Path
.agents/skills/review-security-k8s-namespaces/SKILL.md- Versions recorded
- 5
- Latest version
- git:20260521.2bcbdef, committed May 21, 2026
- First version recorded
- May 20, 2026
- Size
- 1,446 bytes
- Repository stars
- 124
- License
- Apache-2.0
Reviews Kubernetes namespace configurations for workload isolation, multi-tenancy, and boundary defense.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Task Review Kubernetes namespace configs/resources for structural boundaries, workload isolation, and defense-in-depth security. # Checks ## 1. Structural Isolation - **Workload Density**: Flag if most workloads (>80-90%) are dumped into a single namespace (`default`, `prod`). Expect micro-segmentation. - **Tenant Mixing**: Flag mixing of different trust levels (dev/staging/prod) or tenants in the same namespace. ## 2. Abuse & Evasion - **System Namespace Abuse**: Flag custom workloads in `default`, `kube-system`, `kube-public`, `kube-node-lease`. - **Rogue Namespaces**: Flag names impersonating system components (e.g., `kube-admin`, `k8s-infra`). - **Policy Bypass**: Flag labels/annotations on non-system namespaces that bypass cluster policies (e.g., OPA exemptions, `pod-security.kubernetes.io/enforce=privileged`). - **Quota Evasion**: Flag absurdly high `ResourceQuotas`/`LimitRanges`. - **Finalizer Abuse**: Flag suspicious `finalizers` on namespaces. ## 3. Cross-Namespace Risks - **Cross-References**: Flag illegitimate cross-namespace resource references (e.g., `Gateway` lacking `ReferenceGrant`, `ExternalName` to internal namespaces). …
Read the whole file at its exact version.
How to install
mdr add gke-labs/kube-agents/review-security-k8s-namespaces@sha256:90e3b0309222aa40The line at the top of this page pins the label git:20260521.2bcbdef, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_yvmfzfj2tvehwymj)
5 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between May 20, 2026 and May 21, 2026, more than one a day.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260521.2bcbdef latest | 2026-05-21 | 2bcbdef | 1,446 B | A | view · diff |
| git:20260521.27b4bc9 | 2026-05-21 | 27b4bc9 | 1,455 B | A | view · diff |
| git:20260521.94c412d | 2026-05-21 | 94c412d | 2,584 B | A | view · diff |
| git:20260521.5d9d65d | 2026-05-21 | 5d9d65d | 2,981 B | A | view · diff |
| git:20260520.4daa43e | 2026-05-20 | 4daa43e | 1,025 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (1446 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
gke-labs/kube-agents · 124 stars · license Apache-2.0 · pushed 2026-11-06 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_yvmfzfj2tvehwymj GET https://markdownregistry.com/api/v1/resolve?ref=gke-labs/kube-agents/review-security-k8s-namespaces GET https://markdownregistry.com/api/v1/blob/90e3b0309222aa40791b68dd1fc48849488aa59cea7e7b96f8afafc40cf4fb78
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.