Claude Code plugin for building Kubernetes CRD operators

Hey HN,

I built this after getting tired of the Kubebuilder scaffolding ritual — initializing the project, wiring up the controller, configuring webhooks, setting up cert-manager, writing the Tiltfile for fast iteration. It's the same 2-3 hours of boilerplate every time before you write a single line of actual reconciliation logic. The plugin guides Claude Code through the entire operator lifecycle via slash commands:

/k8s:prereqs — checks and installs Go, Kubebuilder, kind, kubectl, Kustomize, Tilt

/k8s:create-cluster — spins up a kind cluster

/k8s:create-operator — guided workflow: requirements gathering, CRD design, controller, webhooks, RBAC

/k8s:dev — starts the Tilt dev loop with live reload

/k8s:verify — validates CRDs, pods, webhooks, and events

/k8s:checklist — runs a quality and safety checklist before you ship

The part I'm most happy with is the safety hook: a PreToolUse hook that blocks kubectl/helm/kustomize commands if the current context isn't a kind-* cluster. Accidental operations on production clusters while developing locally is a real footgun and this eliminates it entirely.

Install:

claude plugin marketplace add https://github.com/Sagart-cactus/claude-k8s-plugin claude plugin install k8s@sagart-devtools

GitHub: https://github.com/Sagart-cactus/claude-k8s-plugin

Built this partly as a learning exercise in Claude Code's plugin system, and partly because I'm building a larger project where this capability was needed: OptiPod (https://github.com/Sagart-cactus/optipod), a GitOps-safe Kubernetes resource rightsizing operator. Happy to answer questions about the plugin architecture, the hook system, or the operator patterns baked into the skills.