What is ark-create-crd?

A command for creating Kubernetes custom resource definitions for the Ark project. A custom resource definition, or CRD, teaches Kubernetes about a new kind of object that users can configure.

Use it to design CRD types, status fields, configuration handling, example YAML, controller scaffolding, webhooks, and related documentation.

It helps new resources follow Ark's established naming, data, validation, and controller patterns. That makes the generated resource fit the rest of the project.

How mckinsey/agents-at-scale-ark configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to mckinsey/agents-at-scale-ark. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/mckinsey/agents-at-scale-ark/main/.claude/commands/ark-create-crd.md

Clone the repo

git clone --depth 1 https://github.com/mckinsey/agents-at-scale-ark

Made for: Claude Code.

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.

README.md

[![agentmods](https://agentmods.dev/badge/commands/mckinsey/agents-at-scale-ark/ark-create-crd/github.svg)](https://agentmods.dev/commands/mckinsey/agents-at-scale-ark/ark-create-crd)

Your own site

<a href="https://agentmods.dev/commands/mckinsey/agents-at-scale-ark/ark-create-crd"><img src="https://agentmods.dev/badge/commands/mckinsey/agents-at-scale-ark/ark-create-crd/github.svg" alt="Measured on agentmods" height="20"></a>

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.

Your own site · 80×15

<a href="https://agentmods.dev/commands/mckinsey/agents-at-scale-ark/ark-create-crd"><img src="https://agentmods.dev/badge/commands/mckinsey/agents-at-scale-ark/ark-create-crd.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 1,191 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.

Model	Per session	Once invoked
Fable 5.1	$0.00000	$0.01191
Opus 5	$0.00000	$0.00596
Sonnet 5	$0.00000	$0.00238
Haiku 4.5	$0.00000	$0.00119

Measured 5d ago against content hash 11b7d2921edd, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

ark-create-crd 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 5d 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.

.claude/commands/ark-create-crd.md · 123 lines

How it starts

The opening of the file, as written. The whole thing — 123 lines — stays where its author put it; the contents beside it link to each section on GitHub.

ARK CRD Generator

You are an expert Kubernetes CRD developer working on the ARK project. Your task is to generate a new Custom Resource Definition following ARK's established patterns and design guidelines.

Pre-Task Checklist

Review CRD Design Guidelines at /docs/content/concepts/crd-design-guide.mdx
Examine existing CRDs in /ark/api/v1alpha1/ for pattern consistency
Check common types in /ark/api/v1alpha1/common_types.go for reusable patterns
Create a todo list using TodoWrite for tracking CRD generation subtasks

CRD Generation Workflow

Analyze the requested resource type and requirements
Determine appropriate naming following ARK conventions
Design the Spec structure using common patterns
Design the Status structure with appropriate phases
Add proper kubebuilder annotations
Generate the complete types file
Create sample YAML manifestation
Generate basic controller scaffold (if requested)
Generate admission webhook scaffold (if requested)
Update relevant documentation

ARK CRD Design Principles

Core Patterns to Follow

ValueSource Pattern: Use for all configuration values that may contain secrets
Parameter Pattern: Include []Parameter for template processing
TTL Pattern: Add TTL *metav1.Duration with default "720h"
TokenUsage Pattern: Include TokenUsage *TokenUsage for AI operations
Owner References: Use for parent-child relationships in controller, not as CRD field

Naming Conventions

...Ref: For references to other CRDs (e.g., AgentModelRef)
...Config: For embedded configuration structs (e.g., ModelConfig)
...Spec: For resource desired state (e.g., AgentSpec)
...Status: For resource observed state (e.g., AgentStatus)

Required Kubebuilder Annotations

// +kubebuilder:object:root=true
// +kubebuilder:subresource:status
// +kubebuilder:printcolumn:name="Phase",type=string,JSONPath=`.status.phase`
// +kubebuilder:printcolumn:name="Age",type=date,JSONPath=`.metadata.creationTimestamp`

Read the full file on GitHub · 123 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.

5d ago First seen · 123 lines · 0 tokens per session scan A 11b7d2921edd

Subscribe to this mod's changes

ark-create-crd is a command published in the GitHub repository mckinsey/agents-at-scale-ark (422 stars, last pushed today), licensed Apache-2.0. It costs nothing until one of its globs matches a file; then it loads 1,191 tokens. 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 2026-09-03.

Backend and APIs Cloud DevOps and cloud agentic-ai ai kubernetes productid-20863

fluxcd

FluxCD entry point — routes to the right workflow based on what you need. Live cluster issue → structured 5-workflow debug trace. Repo health check → 6-phase audit (discovery, validation, API compliance, best practices, security). Helm chart review → helmchart. Starts by asking one question to confirm the right mode.

nitinjain999/platform-skills · 71 tokens

agents-at-scale-ark: Command for Claude Code