seo

seo is a skill for Claude Code, Codex from dallay/agents-skills. It costs 47 tokens per session (2,423 once invoked), scanned A, a copy of seo, MIT.

A set of instructions for improving a website's visibility in search engines. Search engine optimization covers crawl access, page text and metadata, structured data, and related technical details.

In plain words
What is it for?
Use it to review or improve robots.txt, page metadata, indexing settings, structured data, sitemaps, and other SEO-related parts of a site.
Why use it?
It helps identify technical and on-page issues that can prevent search engines from finding, understanding, or displaying pages well.

Skill for Claude CodeCodex

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

Good fit Use it to review or improve robots.txt, page metadata, indexing settings, structured data, sitemaps, and other SEO-related parts of a site.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/dallay/agents-skills/seo
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 dallay/agents-skills --skill seo
Clone the repo
git clone --depth 1 https://github.com/dallay/agents-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 seo

README.md
[![agentmods](https://agentmods.dev/badge/skills/dallay/agents-skills/seo.svg)](https://agentmods.dev/skills/dallay/agents-skills/seo)
Your own site
<a href="https://agentmods.dev/skills/dallay/agents-skills/seo"><img src="https://agentmods.dev/badge/skills/dallay/agents-skills/seo.svg" alt="Measured on agentmods" 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 2,423 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 88% copy Near-identical to another mod 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 $0.02423
Opus 5 $0.00023 $0.01211
Sonnet 5 $0.00009 $0.00485
Haiku 4.5 $0.00005 $0.00242

Measured 7d ago against content hash 68a6aa4b811a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

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 7d 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.

Origin

This is a copy

88% identical to seo — 382 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

skills/seo/SKILL.md · 422 lines

How it starts

The opening of the file, as written. The whole thing — 422 lines — stays where its author put it; the contents beside it link to each section on GitHub.

SEO optimization

Search engine optimization based on Lighthouse SEO audits and Google Search guidelines. Focus on technical SEO, on-page optimization, and structured data.

SEO fundamentals

Search ranking factors (approximate influence):

Factor Influence This Skill
Content quality & relevance ~40% Partial (structure)
Backlinks & authority ~25%
Technical SEO ~15%
Page experience (Core Web Vitals) ~10% See Core Web Vitals
On-page SEO ~10%

Technical SEO

Crawlability

robots.txt:

# /robots.txt
User-agent: *
Allow: /

# Block admin/private areas
Disallow: /admin/
Disallow: /api/
Disallow: /private/

# Don't block resources needed for rendering
# ❌ Disallow: /static/

Sitemap: https://example.com/sitemap.xml

Meta robots:

<!-- Default: indexable, followable -->
<meta name="robots" content="index, follow">

<!-- Noindex specific pages -->
<meta name="robots" content="noindex, nofollow">

<!-- Indexable but don't follow links -->
<meta name="robots" content="index, nofollow">

<!-- Control snippets -->
<meta name="robots" content="max-snippet:150, max-image-preview:large">

Canonical URLs:

<!-- Prevent duplicate content issues -->
<link rel="canonical" href="https://example.com/page">

<!-- Self-referencing canonical (recommended) -->
<link rel="canonical" href="https://example.com/current-page">

<!-- For paginated content -->
<link rel="canonical" href="https://example.com/products">
<!-- Or use rel="prev" / rel="next" for explicit pagination -->

Read the full file on GitHub · 422 lines

Files

What ships with it

1 file 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. 7d ago First seen · 422 lines · 47 tokens per session scan A 68a6aa4b811a

Subscribe to this mod's changes

seo is a skill published in the GitHub repository dallay/agents-skills (2 stars, last pushed 15d ago), licensed MIT. It adds 47 tokens to every session and 2,423 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 88% identical to seo, differing in 382 lines, and is treated as a copy.

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