domain

An AWS Route 53 workflow for checking whether a domain is available, registering it after approval, and connecting DNS management across two AWS accounts.

In plain words
What is it for?
Checking domain availability and cost, registering approved domains, and delegating DNS from a management AWS account to a child account where a CDK stack manages records.
Why use it?
It avoids manually coordinating domain registration, hosted zones, account permissions, and DNS delegation. It also requires confirmation of the annual price before registration.

Skill for Claude CodeCodex

Part of the app-kit plugin — 5 skills shipped together

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.

agentmods
npx agentmods add skills/jpd44/mesh44-plugins/domain
Any agent
npx skills add jpd44/mesh44-plugins --skill domain
Clone the repo
git clone --depth 1 https://github.com/jpd44/mesh44-plugins

Made for: Claude Code, Codex.

Or install app-kit, the plugin that ships this one along with the rest of its 5 skills.

Per session 31 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 850 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00031 $0.00850
Opus 5 $0.00015 $0.00425
Sonnet 5 $0.00006 $0.00170
Haiku 4.5 $0.00003 $0.00085

Measured 2d ago against content hash b1a19943de48, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

domain 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 2d 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.

app-kit/skills/domain/SKILL.md · 95 lines

How it starts

The opening of the file, as written. The whole thing — 95 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/app-kit:domain — Route 53 domain + delegated hosted zone

Why two accounts touch this

Domain registration lives in the management account (mgt, ID from aws.mgt_account_id in ~/.config/mesh44/config.json) for consolidated billing. The hosted zone the CDK stack uses lives in the child account so the stack can route53.HostedZone.fromLookup it without cross-account roles. We bridge them with an NS delegation.

Steps

1. Check availability

AWS_PROFILE=mgt aws route53domains check-domain-availability --domain-name "$DOMAIN"

If AVAILABLE, fetch the annual cost:

AWS_PROFILE=mgt aws route53domains list-prices --tld "$(echo $DOMAIN | awk -F. '{print $NF}')"

Quote the price to the user and require explicit OK before registering.

2. Register

AWS_PROFILE=mgt aws route53domains register-domain \
  --cli-input-json file://register-domain.json

register-domain.json should use the contact info on file for other domains in this AWS account (the user can pull it from aws route53domains get-domain-detail --domain-name <existing-domain>). If no other domains are registered, ask the user for contact info before submitting. Privacy protection: AdminPrivacy=true, RegistrantPrivacy=true, TechPrivacy=true. Auto-renew: AutoRenew=true.

Registration takes 15–60 minutes. Don't block — kick it off, record the OperationId, and let the user know they'll get an email.

3. Create the hosted zone in the child account

AWS_PROFILE=child-<app-name> aws route53 create-hosted-zone \
  --name "$DOMAIN" \
  --caller-reference "$(date +%s)"

Capture the four NS records from the response.

4. Delete the auto-created zone in mgt and replace its NS records with the child's

Registration auto-creates a hosted zone in mgt. Delete it, or (safer) keep it but update its NS record set to point at the child zone's nameservers so DNS resolution flows through the child zone.

# In mgt — replace NS values with the four from step 3
AWS_PROFILE=mgt aws route53 change-resource-record-sets \
  --hosted-zone-id "$MGT_ZONE_ID" \
  --change-batch file://ns-change.json

Read the full file on GitHub · 95 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.

  1. 2d ago First seen · 95 lines · 31 tokens per session scan A b1a19943de48

Subscribe to this mod's changes

domain is a skill published in the GitHub repository jpd44/mesh44-plugins (2 stars, last pushed 1mo ago), licensed MIT. It adds 31 tokens to every session and 850 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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