sf-migration-checklist

sf-migration-checklist is a skill for Claude Code, Codex from Search-Foundry/sf-ai-skills. It costs 43 tokens per session (3,800 once invoked), scanned A, original, Apache-2.0.

A checklist and workflow for moving a website while protecting its technical SEO. Technical SEO covers how search engines crawl, understand, and list a site.

In plain words
What is it for?
Use it to plan, carry out, and validate migrations such as platform, domain, infrastructure, international, or phased changes. It guides crawlability, indexing, redirects, and post-migration monitoring.
Why use it?
Website migrations can cause pages to disappear from search results or lose their existing ranking signals. This workflow adds checks before, during, and after the move.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to plan, carry out, and validate migrations such as platform, domain, infrastructure, international, or phased changes. It guides crawlability, indexing, redirects, and post-migration monitoring.

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Install with agentmods
npx agentmods add skills/search-foundry/sf-ai-skills/sf-migration-checklist
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 Search-Foundry/sf-ai-skills --skill sf-migration-checklist
Clone the repo
git clone --depth 1 https://github.com/Search-Foundry/sf-ai-skills

Made for: Claude Code, Codex.

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 sf-migration-checklist

README.md
[![agentmods](https://agentmods.dev/badge/skills/search-foundry/sf-ai-skills/sf-migration-checklist/github.svg)](https://agentmods.dev/skills/search-foundry/sf-ai-skills/sf-migration-checklist)
Your own site
<a href="https://agentmods.dev/skills/search-foundry/sf-ai-skills/sf-migration-checklist"><img src="https://agentmods.dev/badge/skills/search-foundry/sf-ai-skills/sf-migration-checklist/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 sf-migration-checklist

Your own site · 80×15
<a href="https://agentmods.dev/skills/search-foundry/sf-ai-skills/sf-migration-checklist"><img src="https://agentmods.dev/badge/skills/search-foundry/sf-ai-skills/sf-migration-checklist.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 43 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,800 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 $0.00043 $0.03800
Opus 5 $0.00022 $0.01900
Sonnet 5 $0.00009 $0.00760
Haiku 4.5 $0.00004 $0.00380

Measured 11d ago against content hash 3571958f9e76, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

sf-migration-checklist 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.

skills/technical-seo/sf-migration-checklist/SKILL.md · 420 lines

How it starts

The opening of the file, as written. The whole thing — 420 lines — stays where its author put it; the contents beside it link to each section on GitHub.

SF Migration Checklist – Technical SEO

Orchestration skill for site migrations. Guides the agent through classification, planning, execution, and validation, with quality gates at every critical phase.

Language mode

  • Default to Italian if the user writes in Italian.
  • Default to English if the user writes in English.
  • If the target market is specified, adapt terminology to that market.
  • Preserve the same quality controls in both languages.

How this skill works

This skill is an orchestrator: it defines the workflow, decision points, and required outputs. Detailed operational checklists live in references/ and are loaded only when relevant based on migration classification.

Reference files:

  • references/pre-migration-checklist.md — detailed checks for Steps 1–2
  • references/technical-validation.md — detailed checks for Steps 3–4
  • references/post-migration-monitoring.md — detailed checks for Steps 5–7
  • references/anti-patterns.md — known mistakes with examples
  • references/conditional-modules.md — modules for international, multi-domain, infra, phased migrations

Intended use

  • Technical SEO audits before, during, and after migration
  • Platform, domain, or infrastructure migrations
  • Complex or high-risk site changes
  • Migration success evaluation and post-mortem

The skill prioritizes technical correctness and signal preservation over speed of release or aesthetic considerations.


Step 0 – Migration Classification (Mandatory)

Do not proceed until the migration has been correctly classified. Incorrect classification leads to unnecessary checks or missing critical risks.

0.1 Identify migration type(s)

Classify the migration into one or more categories:

# Type URL change Domain change Redirect planning
1 Domain migration (rebranding only) No Yes Yes
2 Platform + URL structure (same domain) Yes No Yes
3 Platform + URL structure + domain Yes Yes Yes
4 Platform only (no URL/domain change) No No Minimal
5 Multi-domain → single-domain consolidation Yes Yes Yes
6 Section migration to separate domain Partial Yes Yes
7 Infrastructure or protocol migration No No Conditional
8 International SEO migration Varies Varies Yes
9 Partial or phased migration Varies Varies Yes

Read the full file on GitHub · 420 lines

Files

What ships with it

5 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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 · 420 lines · 43 tokens per session scan A 3571958f9e76

Subscribe to this mod's changes

sf-migration-checklist is a skill published in the GitHub repository Search-Foundry/sf-ai-skills (5 stars, last pushed 7mo ago), licensed Apache-2.0. It adds 43 tokens to every session and 3,800 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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