moai-adk: Skill for Claude Code

.claude/skills/moai-ref-seo/SKILL.md

moai-ref-seo is a skill for Claude Code from modu-ai/moai-adk. It costs 178 tokens per session (2,820 once invoked), scanned A, original, Apache-2.0.

A guide to making web pages easier for search engines to fetch, understand, and index. It covers page structure, addresses, metadata, and machine-readable page information.

In plain words
What is it for?
Use it when building pages and routes, setting titles and descriptions, creating robots.txt and sitemaps, adding structured data, or reviewing search visibility before release.
Why use it?
It helps prevent duplicate page addresses, missing page descriptions, unclear content structure, and search engines overlooking important pages.

Skill for Claude Code

Written for Claude Code: user-invocable in frontmatter.

This is modu-ai/moai-adk's own configuration. It tells Claude Code how to work on moai-adk itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything moai-adk configures →

About the project

MoAI-ADK is a Go-based harness that organizes and verifies Claude Code work across planning, implementation, synchronization, and review stages. Developers use it to structure agentic coding tasks, apply quality gates, and route work across language models, while the catalogue entries extend its workflow with skills, hooks, commands, MCP servers, instructions, and settings.

modu-ai/moai-adk · 1,204 stars · on GitHub · adk.mo.ai.kr

Reuse

Borrowing it

Nothing to install: this file belongs to modu-ai/moai-adk. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/modu-ai/moai-adk/main/.claude/skills/moai-ref-seo/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/modu-ai/moai-adk

Made for: Claude Code.

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 moai-ref-seo

README.md
[![agentmods](https://agentmods.dev/badge/skills/modu-ai/moai-adk/moai-ref-seo/github.svg)](https://agentmods.dev/skills/modu-ai/moai-adk/moai-ref-seo)
Your own site
<a href="https://agentmods.dev/skills/modu-ai/moai-adk/moai-ref-seo"><img src="https://agentmods.dev/badge/skills/modu-ai/moai-adk/moai-ref-seo/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 moai-ref-seo

Your own site · 80×15
<a href="https://agentmods.dev/skills/modu-ai/moai-adk/moai-ref-seo"><img src="https://agentmods.dev/badge/skills/modu-ai/moai-adk/moai-ref-seo.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 178 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,820 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. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 2 findings, up to high

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • high Prompt Injection · line 165
    Hidden instructions were detected in comments or invisible text. These could contain malicious directives. Manual review is recommended.
    Fix: Audit all comments and invisible characters. Remove any instructions that direct the agent to perform unauthorized actions. Use plain, reviewable content.
  • high Prompt Injection · line 179
    Hidden instructions were detected in comments or invisible text. These could contain malicious directives. Manual review is recommended.
    Fix: Audit all comments and invisible characters. Remove any instructions that direct the agent to perform unauthorized actions. Use plain, reviewable content.
How audits are shown
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 $0.00178 $0.02820
Opus 5 $0.00089 $0.01410
Sonnet 5 $0.00036 $0.00564
Haiku 4.5 $0.00018 $0.00282

Measured 10d ago against content hash 39d3ad2b348d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

moai-ref-seo 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 10d 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/skills/moai-ref-seo/SKILL.md · 208 lines

How it starts

The opening of the file, as written. The whole thing — 208 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Search Visibility Reference

Target Agents

  • manager-develop — applies these rules while implementing pages, routes, and serialized metadata output
  • /moai review — pre-ship indexing review surface; equivalently available as a per-spawn Agent(general-purpose) with web-output review instructions

Core Principle

A page is indexed on what a machine can fetch and parse, not on what a person sees once everything has finished loading. Two failures dominate everything below: the same content reachable at more than one address, and a claim asserted in serialized data that nothing on the page corroborates. Every rule here is a specialization of one of those two.

Figures that engines publish and then quietly revise — truncation widths, ranking weights, crawl allowances — are deliberately absent. Where a limit matters, this reference gives the decision rule and the measurement to take, so the guidance outlives the figure.

Document Semantics

The structure a parser reads before it reaches any content signal. Cheapest class of defect to introduce, and the cheapest to detect.

Rule How to check it Failure it prevents
Exactly one h1 per document Count h1 elements in the rendered output of each page Competing topic signals leave the subject ambiguous
No skipped heading level Walk the heading sequence; each descent moves by at most one level Section nesting a parser cannot reconstruct
Every image carries alt text Each image element has a non-empty alt attribute, or an empty one paired with an explicit decorative marker Meaning locked inside a binary the parser cannot open
Anchor text names its destination Read each link's text with the surrounding sentence hidden, then ask where it goes Instruction-shaped link text carries no signal about the target
Fragment targets resolve For each in-page fragment link, confirm a matching identifier exists in the same rendered output Navigation that silently lands nowhere

Read the full file on GitHub · 208 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. 10d ago First seen · 208 lines · 178 tokens per session scan A 39d3ad2b348d

Subscribe to this mod's changes

moai-ref-seo is a skill published in the GitHub repository modu-ai/moai-adk (1,204 stars, last pushed yesterday), licensed Apache-2.0. It adds 178 tokens to every session and 2,820 once invoked, about $0.0009 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 2026-08-30.