aegis-kubernetes-cluster-hardening SKILL.md skillA
aegis-kubernetes-cluster-hardening from as-foss/aegis-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add as-foss/aegis-skills/aegis-kubernetes-cluster-hardening@git:20260826.9702747Pins git:20260826.9702747 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- as-foss/aegis-skills
- Path
skills/server/kubernetes-cluster/SKILL.md- Versions recorded
- 3
- Latest version
- git:20260826.9702747, committed Aug 26, 2026
- First version recorded
- Aug 25, 2026
- Size
- 47,477 bytes
- Repository stars
- 16
- License
- Apache-2.0
Audits Kubernetes cluster security posture across API server access, RBAC blast radius, admission control, workload securityContexts, NetworkPolicy coverage, secrets handling, and ingress/exposure surface, with read-only sweeps for live clusters and config-as-code repositories.
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
## Scope & Objectives Audit one Kubernetes cluster — or its config-as-code repository (plain manifests, Helm charts, Kustomize overlays) — in eight domains: 1. **Cluster access & API server** — kubeconfig hygiene, self-inspection of effective permissions, anonymous-auth and legacy insecure-port exposure, etcd encryption-at-rest presence. 2. **RBAC** — wildcard rules, anonymous bindings, cluster-admin holder count, default ServiceAccount token automounting, privilege-escalation primitives (`escalate`, `bind`, `impersonate`, `serviceaccounts/token`). 3. **Admission control & policy** — PodSecurity admission labels per namespace; PodSecurityPolicy as legacy-only detection; policy engines (Kyverno, Gatekeeper) noted qualitatively. 4. **Workload securityContext** — cluster-wide coverage sweep of `runAsNonRoot`, `allowPrivilegeEscalation`, `readOnlyRootFilesystem`; privileged containers; hostPath, hostNetwork/hostPort/hostPID hunts. Deep pod-spec hardening lives in the configuration-hardening module — do not duplicate it here beyond the cluster-level view. 5. **NetworkPolicy posture** — default-deny presence per namespace, egress rarity, DNS allowance gotcha. …
Read the whole file at its exact version.
How to install
mdr add as-foss/aegis-skills/aegis-kubernetes-cluster-hardening@sha256:62e88e41bd7d4355The line at the top of this page pins the label git:20260826.9702747, 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_dfrapzmfdavgwfdb)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between Aug 25, 2026 and Aug 26, 2026, more than one a day.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260826.9702747 latest | 2026-08-26 | 9702747 | 47,477 B | A | view · diff |
| git:20260825.85624bc | 2026-08-25 | 85624bc | 47,471 B | A | view · diff |
| git:20260825.244c198 | 2026-08-25 | 244c198 | 46,537 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 (47477 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
as-foss/aegis-skills · 16 stars · license Apache-2.0 · pushed 2026-08-26 · branch master
API
GET https://markdownregistry.com/api/v1/artifacts/art_dfrapzmfdavgwfdb GET https://markdownregistry.com/api/v1/resolve?ref=as-foss/aegis-skills/aegis-kubernetes-cluster-hardening GET https://markdownregistry.com/api/v1/blob/62e88e41bd7d43550930daa41a21faebe2972974846b9b4e1987b264a117abf1
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.