kubernetes-operator-development SKILL.md skillA
kubernetes-operator-development from d-padmanabhan/agent-engineering-handbook is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add d-padmanabhan/agent-engineering-handbook/kubernetes-operator-development@git:20260926.6d34982Pins git:20260926.6d34982 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- d-padmanabhan/agent-engineering-handbook
- Path
skills/kubernetes-operator-development/SKILL.md- Versions recorded
- 2
- Latest version
- git:20260926.6d34982, committed Sep 26, 2026
- First version recorded
- Sep 11, 2026
- Size
- 8,120 bytes
- Repository stars
- 20
- License
- MIT
Designs, implements, reviews, tests, and operates Kubernetes operators and controllers in Go with Kubebuilder and controller-runtime. Use when defining CRDs, reconciliation loops, status conditions, finalizers, admission webhooks, external-provider controllers, operator upgrades, envtest suites, or controller-runtime cache, retry, and concurrency behavior.
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
# Kubernetes Operator Development
Mandatory controller and cluster-mutation gates live in the Kubernetes rule
(`${HANDBOOK_ROOT}/rules/450-kubernetes.mdc`). This skill owns the operator
design and implementation workflow. Use the Kubernetes containers skill
(`${HANDBOOK_ROOT}/skills/kubernetes-containers/SKILL.md`) for workloads,
Helm, Argo CD, and cluster operations.
## Core Contract
A custom resource expresses desired intent. Reconciliation observes desired
and actual state, performs retry-safe work, and records what was observed.
Events only indicate that state might have changed; they are not durable
exactly-once commands.
Every design must answer:
- What is authoritative, and which fields does this controller own?
- How is each external resource identified and ownership-verified?
- What happens after duplicate delivery, restart, timeout, or lost response?
- What is safe to create, adopt, update, retain, and delete?
- What makes each condition current for the resource generation?
- What bounds retries, provider calls, concurrency, and tenant impact?
- How are API and operator upgrades rolled forward and back?
…Read the whole file at its exact version.
How to install
mdr add d-padmanabhan/agent-engineering-handbook/kubernetes-operator-development@sha256:316ed215bc57336bThe line at the top of this page pins the label git:20260926.6d34982, 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_jct6acdjyy4gopve)
6 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Sep 11, 2026 and Sep 26, 2026, about one every 15 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260926.6d34982 latest | 2026-09-26 | 6d34982 | 8,120 B | A | view · diff |
| git:20260911.25e122a | 2026-09-11 | 25e122a | 7,671 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 (8120 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
d-padmanabhan/agent-engineering-handbook · 20 stars · license MIT · pushed 2026-10-30 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_jct6acdjyy4gopve GET https://markdownregistry.com/api/v1/resolve?ref=d-padmanabhan/agent-engineering-handbook/kubernetes-operator-development GET https://markdownregistry.com/api/v1/blob/316ed215bc57336bb34f8b1e33f7af53050842ca383411849fcfafb5187dbf0f
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.