cluster-sim

cluster-sim is a skill for Claude Code, Codex from paruff/uFawkesAI. It costs 32 tokens per session (451 once invoked), scanned A, original, MIT.

A procedure for running a local Kubernetes cluster, a small development version of a system that normally runs across many servers.

In plain words
What is it for?
Use it to start kind, k3d, or minikube clusters, apply configuration files, and check that nodes, system pods, and application pods are running.
Why use it?
It lets developers test Kubernetes manifests, deployments, logs, and metrics without using a production cluster.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions Claude Code; installed under .agents/ (shared by several agents); mentions Codex.

Good fit Use it to start kind, k3d, or minikube clusters, apply configuration files, and check that nodes, system pods, and application pods are running.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/paruff/ufawkesai/cluster-sim
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 paruff/uFawkesAI --skill cluster-sim
Clone the repo
git clone --depth 1 https://github.com/paruff/uFawkesAI

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 cluster-sim

README.md
[![agentmods](https://agentmods.dev/badge/skills/paruff/ufawkesai/cluster-sim.svg)](https://agentmods.dev/skills/paruff/ufawkesai/cluster-sim)
Your own site
<a href="https://agentmods.dev/skills/paruff/ufawkesai/cluster-sim"><img src="https://agentmods.dev/badge/skills/paruff/ufawkesai/cluster-sim.svg" alt="Measured on agentmods" height="20"></a>
Per session 32 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 451 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.
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 $0.00032 $0.00451
Opus 5 $0.00016 $0.00226
Sonnet 5 $0.00006 $0.00090
Haiku 4.5 $0.00003 $0.00045

Measured 8d ago against content hash a200685ee4a0, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

cluster-sim 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 8d 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/dev-experience/local-environment-simulation/cluster-sim/SKILL.md · 90 lines

What it actually says

Skill: Local Cluster Simulation

Load trigger: "load cluster-sim skill" > DORA: Cap 3 (AI-Accessible Internal Data) Token cost: Low

Purpose

Run a local Kubernetes cluster for development and testing.

Responsibilities

  • Start kind/k3d cluster
  • Apply manifests
  • Validate rollout
  • Validate logs and metrics

Inputs

  • Manifests
  • Local cluster config

Outputs

  • cluster-sim.json

Cluster Options

Tool Use When
kind Full K8s simulation, CI testing
k3d Lightweight, fast startup
minikube Single-node development

Setup Commands

kind

kind create cluster --name dev --wait 60s
kind export kubeconfig --name dev

k3d

k3d cluster create dev --agents 2

Validation Rules

  • Cluster starts successfully
  • All nodes Ready
  • System pods Running
  • Manifests apply cleanly
  • Pods reach Running state

Output Format

{
  "skill": "cluster-sim",
  "tool": "kind",
  "cluster_name": "dev",
  "status": "running",
  "nodes": 1,
  "system_pods": {
    "total": 12,
    "running": 12
  },
  "manifests_applied": 5,
  "pods_running": 3
}

Success Criteria

  • Local cluster behaves like production
  • Fast startup (< 60 seconds)
  • Manifests apply cleanly
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. 8d ago First seen · 90 lines · 32 tokens per session scan A a200685ee4a0

Subscribe to this mod's changes

cluster-sim is a skill published in the GitHub repository paruff/uFawkesAI (2 stars, last pushed 16d ago), licensed MIT. It adds 32 tokens to every session and 451 once invoked, about $0.0002 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 2026-08-31.

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