seo-page

seo-page is a skill for Claude Code from kabde/seo-skills. It costs 63 tokens per session (869 once invoked), scanned A, a copy of seo-page, MIT.

A detailed review of one webpage’s search-engine optimisation, including its text, headings, metadata, links, images, structured data, and performance. SEO is the practice of helping pages appear and perform better in search results.

In plain words
What is it for?
Use it to assess titles, descriptions, headings, URLs, links, readability, keyword use, author credibility signals, canonical tags, social metadata, language tags, schema, images, and performance.
Why use it?
It brings common page-level SEO problems into one check instead of requiring separate manual reviews of the page source and content.

Skill for Claude Code

Written for Claude Code: argument-hint in frontmatter.

Part of the claude-seo plugin — 18 skills, 10 agents, 1 hook shipped together

Good fit Use it to assess titles, descriptions, headings, URLs, links, readability, keyword use, author credibility signals, canonical tags, social metadata, language tags, schema, images, and performance.

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

Made for: Claude Code.

Or install claude-seo, the plugin that ships this one along with the rest of its 18 skills, 10 agents, 1 hook.

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-page

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/kabde/seo-skills/seo-page"><img src="https://agentmods.dev/badge/skills/kabde/seo-skills/seo-page.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 63 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 869 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 84% 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 $0.00063 $0.00869
Opus 5 $0.00032 $0.00434
Sonnet 5 $0.00013 $0.00174
Haiku 4.5 $0.00006 $0.00087

Measured 11d ago against content hash bb93568b5fed, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

seo-page 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.

Origin

This is a copy

84% identical to seo-page — 10 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-page/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.

Single Page Analysis

What to Analyze

On-Page SEO

  • Title tag: 50-60 characters, includes primary keyword, unique
  • Meta description: 150-160 characters, compelling, includes keyword
  • H1: exactly one, matches page intent, includes keyword
  • H2-H6: logical hierarchy (no skipped levels), descriptive
  • URL: short, descriptive, hyphenated, no parameters
  • Internal links: sufficient, relevant anchor text, no orphan pages
  • External links: to authoritative sources, reasonable count

Content Quality

  • Word count vs page type minimums (see quality-gates.md)
  • Readability: Flesch Reading Ease score, grade level
  • Keyword density: natural (1-3%), semantic variations present
  • E-E-A-T signals: author bio, credentials, first-hand experience markers
  • Content freshness: publication date, last updated date

Technical Elements

  • Canonical tag: present, self-referencing or correct
  • Meta robots: index/follow unless intentionally blocked
  • Open Graph: og:title, og:description, og:image, og:url
  • Twitter Card: twitter:card, twitter:title, twitter:description
  • Hreflang: if multi-language, correct implementation

Schema Markup

  • Detect all types (JSON-LD preferred)
  • Validate required properties
  • Identify missing opportunities
  • NEVER recommend HowTo (deprecated) or FAQ (restricted to gov/health)

Images

  • Alt text: present, descriptive, includes keywords where natural
  • File size: flag >200KB (warning), >500KB (critical)
  • Format: recommend WebP/AVIF over JPEG/PNG
  • Dimensions: width/height set for CLS prevention
  • Lazy loading: loading="lazy" on below-fold images

Core Web Vitals (reference only, not measurable from HTML alone)

  • Flag potential LCP issues (huge hero images, render-blocking resources)
  • Flag potential INP issues (heavy JS, no async/defer)
  • Flag potential CLS issues (missing image dimensions, injected content)

Output

Page Score Card

Overall Score: XX/100

On-Page SEO:     XX/100  ████████░░
Content Quality: XX/100  ██████████
Technical:       XX/100  ███████░░░
Schema:          XX/100  █████░░░░░
Images:          XX/100  ████████░░

Read the full file on GitHub · 95 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. 11d ago First seen · 95 lines · 63 tokens per session scan A bb93568b5fed

Subscribe to this mod's changes

seo-page is a skill published in the GitHub repository kabde/seo-skills (11 stars, last pushed 4mo ago), licensed MIT. It adds 63 tokens to every session and 869 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. It is 84% identical to seo-page, differing in 10 lines, and is treated as a copy.

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