k8s-certs

k8s-certs is a skill for Claude Code, Codex from rohitg00/kubectl-mcp-server. It costs 29 tokens per session (1,189 once invoked), scanned A, original, MIT.

A guide for managing HTTPS and other TLS certificates in Kubernetes with cert-manager, a Kubernetes tool that creates and renews certificates. It also covers certificate issuers and troubleshooting.

In plain words
What is it for?
Use it to detect cert-manager, list certificates and issuers, configure certificate issuance, test with a staging issuer, and investigate certificate problems.
Why use it?
It helps find why certificates are missing, expired, or not renewing, and provides an order for checking the related Kubernetes resources.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to detect cert-manager, list certificates and issuers, configure certificate issuance, test with a staging issuer, and investigate certificate problems.

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Install with agentmods
npx agentmods add skills/rohitg00/kubectl-mcp-server/k8s-certs
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 rohitg00/kubectl-mcp-server --skill k8s-certs
Clone the repo
git clone --depth 1 https://github.com/rohitg00/kubectl-mcp-server

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 k8s-certs

README.md
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Your own site
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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 k8s-certs

Your own site · 80×15
<a href="https://agentmods.dev/skills/rohitg00/kubectl-mcp-server/k8s-certs"><img src="https://agentmods.dev/badge/skills/rohitg00/kubectl-mcp-server/k8s-certs.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 29 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,189 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00029 $0.01189
Opus 5 $0.00015 $0.00594
Sonnet 5 $0.00006 $0.00238
Haiku 4.5 $0.00003 $0.00119

Measured 11d ago against content hash 8cb110494d69, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

k8s-certs 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 11d 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.

kubernetes-skills/claude/k8s-certs/SKILL.md · 220 lines

How it starts

The opening of the file, as written. The whole thing — 220 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Certificate Management with cert-manager

Manage TLS certificates using kubectl-mcp-server's cert-manager tools.

When to Apply

Use this skill when:

  • User mentions: "certificate", "cert-manager", "TLS", "SSL", "issuer", "Let's Encrypt"
  • Operations: creating certificates, configuring issuers, debugging cert issues
  • Keywords: "https", "secure", "encrypt", "renew", "expiring"

Priority Rules

Priority Rule Impact Tools
1 Detect cert-manager first CRITICAL certmanager_detect_tool
2 Use staging issuer for testing HIGH Test with letsencrypt-staging
3 Check issuer before cert HIGH certmanager_clusterissuers_list_tool
4 Monitor certificate expiry MEDIUM certmanager_certificate_get_tool

Quick Reference

Task Tool Example
Detect cert-manager certmanager_detect_tool certmanager_detect_tool()
List certificates certmanager_certificates_list_tool certmanager_certificates_list_tool(namespace)
Get certificate certmanager_certificate_get_tool certmanager_certificate_get_tool(name, namespace)
List issuers certmanager_clusterissuers_list_tool certmanager_clusterissuers_list_tool()

Check Installation

certmanager_detect_tool()

Certificates

List Certificates

certmanager_certificates_list_tool(namespace="default")

Get Certificate Details

certmanager_certificate_get_tool(
    name="my-tls",
    namespace="default"
)

Create Certificate

kubectl_apply(manifest="""
apiVersion: cert-manager.io/v1
kind: Certificate
metadata:
  name: my-tls
  namespace: default
spec:
  secretName: my-tls-secret
  issuerRef:
    name: letsencrypt-prod
    kind: ClusterIssuer
  dnsNames:
  - app.example.com
  - www.example.com
""")

Issuers

List Issuers

certmanager_issuers_list_tool(namespace="default")

certmanager_clusterissuers_list_tool()

Read the full file on GitHub · 220 lines

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. 11d ago First seen · 220 lines · 29 tokens per session scan A 8cb110494d69

Subscribe to this mod's changes

k8s-certs is a skill published in the GitHub repository rohitg00/kubectl-mcp-server (956 stars, last pushed 5mo ago), licensed MIT. It adds 29 tokens to every session and 1,189 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.