air-gapped/skills · .claude/skills/ubuntu-cloud-init/SKILL.md

ubuntu-cloud-init skillB

ubuntu-cloud-init is agent-read markdown (skill) from air-gapped/skills: Author, validate, and debug cloud-init configuration for Ubuntu Server LTS 24.04 and 26.04, focused on on-premise and air-gapped hosts via the NoCloud datasource — `#cloud-config` user-data, the cloud-config modules (users, ssh, write_files, runcmd, apt with local mirrors, ca_certs for internal CAs, ntp, disk_setup), NoCloud seeding (seed dir, `cidata` ISO, `ds=nocloud;s=...` kernel cmdline, SMBIOS serial), boot stages, and pinning `datasource_list`. Public-cloud datasources (EC2/Azure/GCE…) are.

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add air-gapped/skills/ubuntu-cloud-init@git:20260721.d6a4244
Exact content
mdr add air-gapped/skills/ubuntu-cloud-init@sha256:74bdfb31fef92234

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_lluvgxz3of5qkwcg.svg)](https://markdownregistry.com/a/art_lluvgxz3of5qkwcg)

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Versions

versioncommittedcommitsizeaudit
git:20260721.d6a4244 latest2026-07-21 d6a4244 12,409 BB view · diff
git:20260614.900b4d12026-06-14 900b4d1 9,992 BB view

Audit of the latest version

B  16 of 17 checks passed. Deterministic, no model, same answer every run.
  • fail: No link to a raw IP address (matched: http://10.0.0.1:8000)
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (12409 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 script tag

Source

GitHub

air-gapped/skills · 5 stars · license MIT · pushed 2026-09-16 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_lluvgxz3of5qkwcg
GET https://markdownregistry.com/api/v1/resolve?ref=air-gapped/skills/ubuntu-cloud-init
GET https://markdownregistry.com/api/v1/blob/74bdfb31fef92234900036e39f7b7ec528291dfeb87330c6d63c384f4472eeaf

Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.