review-security-k8s-agents-firewall SKILL.md skillA
review-security-k8s-agents-firewall 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-agents-firewall@git:20260903.799c7e3Pins git:20260903.799c7e3 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-agents-firewall/SKILL.md- Versions recorded
- 5
- Latest version
- git:20260903.799c7e3, committed Sep 3, 2026
- First version recorded
- May 21, 2026
- Size
- 1,053 bytes
- Repository stars
- 120
- License
- Apache-2.0
Reviews Kubernetes network and firewall configurations specifically for AI agent execution sandboxes.
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 network policies and firewall configs for AI agent control loops and execution sandboxes. # Checks ## 1. Egress Restrictions - **Sandbox Network**: Enforce default-deny egress. Allowlist absolute minimum required IPs/services. - **Internal APIs**: Block agent/sandbox access to internal cluster APIs, K8s services, and cloud metadata (e.g., `169.254.169.254`) — on the credential ports (TCP `80` pre-NAT, `988` post-NAT), not on port `53`, which is the Pod's resolver under Cloud DNS for GKE and reaches no token. - **Exfiltration Vectors**: Flag broad egress (e.g., `0.0.0.0/0`) on agent pods. ## 2. Ingress & Invocation - **Authorized Sources**: Restrict agent API ingress to trusted upstream services (auth gateways, orchestrators). - **Bypass Prevention**: Flag LoadBalancer or NodePort exposure on main agent containers lacking strict ingress NetworkPolicies.
Read the whole file at its exact version.
How to install
mdr add gke-labs/kube-agents/review-security-k8s-agents-firewall@sha256:c4fcd5a8f2518381The line at the top of this page pins the label git:20260903.799c7e3, 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_aq65o5ipbspjntez)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between May 21, 2026 and Sep 3, 2026, about one every 26 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260903.799c7e3 latest | 2026-09-03 | 799c7e3 | 1,053 B | A | view · diff |
| git:20260521.2bcbdef | 2026-05-21 | 2bcbdef | 893 B | A | view · diff |
| git:20260521.27b4bc9 | 2026-05-21 | 27b4bc9 | 869 B | A | view · diff |
| git:20260521.94c412d | 2026-05-21 | 94c412d | 1,792 B | A | view · diff |
| git:20260521.6d9669a | 2026-05-21 | 6d9669a | 2,194 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 (1053 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 · 120 stars · license Apache-2.0 · pushed 2026-11-01 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_aq65o5ipbspjntez GET https://markdownregistry.com/api/v1/resolve?ref=gke-labs/kube-agents/review-security-k8s-agents-firewall GET https://markdownregistry.com/api/v1/blob/c4fcd5a8f251838163d8920298dfbec50729eeee52b1a85d1826e72255c3ecc5
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.