live-domain-cutover

live-domain-cutover is a skill for Claude Code from KhaledSaeed18/dotclaude. It costs 47 tokens per session (1,021 once invoked), scanned A, original, MIT.

A procedure for moving a live website name from one host to another without planned downtime. It rehearses the move, changes DNS, waits for cached records to expire, checks the new host, and keeps the old host available for rollback.

In plain words
What is it for?
Use it when migrating a production application between hosting platforms while preserving domain sessions and allowing a measured cutover.
Why use it?
DNS changes reach users at different times, so switching hosts abruptly can cause failures or lost sessions. Recording the old DNS value and keeping the old host running makes rollback possible.

Skill for Claude Code

Written for Claude Code: argument-hint in frontmatter.

Part of the deploy plugin — 9 skills, 3 commands, 1 agent shipped together

Good fit Use it when migrating a production application between hosting platforms while preserving domain sessions and allowing a measured cutover.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/khaledsaeed18/dotclaude/live-domain-cutover
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.

Any agent
npx skills add KhaledSaeed18/dotclaude --skill live-domain-cutover
Clone the repo
git clone --depth 1 https://github.com/KhaledSaeed18/dotclaude

Made for: Claude Code.

Or install deploy, the plugin that ships this one along with the rest of its 9 skills, 3 commands, 1 agent.

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.

agentmods badge for live-domain-cutover

README.md
[![agentmods](https://agentmods.dev/badge/skills/khaledsaeed18/dotclaude/live-domain-cutover/github.svg)](https://agentmods.dev/skills/khaledsaeed18/dotclaude/live-domain-cutover)
Your own site
<a href="https://agentmods.dev/skills/khaledsaeed18/dotclaude/live-domain-cutover"><img src="https://agentmods.dev/badge/skills/khaledsaeed18/dotclaude/live-domain-cutover/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.

agentmods 80×15 button for live-domain-cutover

Your own site · 80×15
<a href="https://agentmods.dev/skills/khaledsaeed18/dotclaude/live-domain-cutover"><img src="https://agentmods.dev/badge/skills/khaledsaeed18/dotclaude/live-domain-cutover.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 47 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,021 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00047 $0.01021
Opus 5.5 $0.00019 $0.00408
Sonnet 5.5 $0.00009 $0.00204
Haiku 4.5 $0.00005 $0.00102

Measured 11d ago against content hash 116899777c7d, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

live-domain-cutover 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 11d 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-plugin/plugins/deploy/skills/live-domain-cutover/SKILL.md · 53 lines

How it starts

The opening of the file, as written. The whole thing — 53 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Move the name last. Everything about the new host is proven on a rehearsal name first; the cutover is then one DNS edit with a recorded rollback value, and the old host keeps serving stale caches until they expire. Sessions survive because cookies bind to the domain, not to the machine behind it.

Hard rules: never break these

  • DNS edits are the owner's. Give exact records (type, host, value, TTL); the owner saves them and tells you. You verify from the authoritative servers and public resolvers.
  • Record the rollback value before anything changes. The current record (a CNAME target or an address) goes into the deployment doc first. Rollback is restoring it, nothing else.
  • Lower the TTL hours ahead. A 1 minute TTL on the record being replaced is what makes the switch and the rollback fast.
  • The old host stays alive until the soak ends. Visitors with a cached answer keep reaching it; it must keep working.
  • A certificate needs DNS first. HTTP-01 issuance fails while the name does not resolve; plan the redeploy that re-registers the router after the record exists.

Step 1: Record the starting point

dig +noall +answer <domain>                   # the rollback value and current TTL
dig +short NS <zone>                          # authoritative servers to query later

Write both into the deployment doc together with the new host's address. Ask the owner to lower the TTL of that record to 1 min now; continue only after dig +noall +answer <domain> @<ns> shows the lower TTL.

Step 2: Rehearse on a sibling name

Owner adds an A record <name>-next to the new host (TTL 1 min). Deploy the application with only https://<name>-next.<zone> as its domain. Run the whole deploy-verification skill there: certificate, container contract, rolling update, client address, signed-in pages in every locale. Compare response headers with the old host and add anything missing (a platform edge often adds Strict-Transport-Security). Fix and redeploy until every line passes. Nothing on the real domain has changed yet.

Read the full file on GitHub · 53 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. 11d ago First seen · 53 lines · 47 tokens per session scan A 116899777c7d

Subscribe to this mod's changes

live-domain-cutover is a skill published in the GitHub repository KhaledSaeed18/dotclaude (5 stars, last pushed 2d ago), licensed MIT. It adds 47 tokens to every session and 1,021 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-10-05.

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