An SEO checking toolkit for websites, where SEO means improving how pages appear in search engines. It can inspect page markup, headings, links, images, structured data, performance, mobile support, accessibility, robots.txt, sitemaps, and content quality.

Use it to crawl or fetch a URL, run SEO audits, inspect specific page elements, and use the available MCP tools or command-line commands.

It replaces manual checks with repeatable analysis of the actual page and its technical search settings.

mcp-seo — Skill for Claude Code and Codex by g-battaglia

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 g-battaglia/mcp-seo --skill mcp-seo

Clone the repo

git clone --depth 1 https://github.com/g-battaglia/mcp-seo

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/g-battaglia/mcp-seo/mcp-seo/github.svg)](https://agentmods.dev/skills/g-battaglia/mcp-seo/mcp-seo)

Your own site

<a href="https://agentmods.dev/skills/g-battaglia/mcp-seo/mcp-seo"><img src="https://agentmods.dev/badge/skills/g-battaglia/mcp-seo/mcp-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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/g-battaglia/mcp-seo/mcp-seo"><img src="https://agentmods.dev/badge/skills/g-battaglia/mcp-seo/mcp-seo.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 207 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,908 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 1 finding. 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.

Model	Per session	Once invoked
Fable 5.1	$0.00207	$0.01908
Opus 5.5	$0.00083	$0.00763
Sonnet 5.5	$0.00041	$0.00382
Haiku 4.5	$0.00021	$0.00191

Measured 2mo ago against content hash 113cc00e25aa, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

mcp-seo scanned grade A with 1 finding 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 2mo 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

2. **Schema markup detection**: `web_fetch` and `curl` cannot reliably detect JSON-LD injected via JavaScript. Use `analyze_structured_data` instead — it renders the page with a headless browser.

skills/mcp-seo/SKILL.md · 192 lines

How it starts

The opening of the file, as written. The whole thing — 192 lines — stays where its author put it; the contents beside it link to each section on GitHub.

MCP-SEO — SEO Analysis Toolkit for AI Agents

You have access to mcp-seo, a complete SEO analysis toolkit with 18 MCP tools and 21 CLI commands. Use these tools to perform real analysis on any URL — do not guess or assume SEO issues, run the tools and report actual findings.

Prerequisites

The user must have mcp-seo installed. If tools fail with "command not found":

pip install mcp-seo    # Install the package
mcp-seo setup          # Install headless Chromium (one-time)

MCP Server Configuration

If using as an MCP server (Claude Desktop, Cursor, etc.), add to claude_desktop_config.json:

{
  "mcpServers": {
    "mcp-seo": {
      "command": "mcp-seo",
      "args": ["mcp"]
    }
  }
}

Tool Reference

If the mcp-seo MCP server is connected, use MCP tool names directly. Otherwise, use CLI commands via bash.

Page Fetching

MCP Tool	CLI Command	What it does
`crawl`	`mcp-seo crawl <url>`	Render page with headless Chromium, return full HTML
`fetch_page`	`mcp-seo fetch <url>`	Raw HTTP response (headers, status, redirects, SSL)

On-Page SEO

MCP Tool	CLI Command	What it does
`analyze_meta_tags`	`mcp-seo meta <url>`	Title, description, OG, Twitter, canonical, viewport, hreflang
`analyze_headings`	`mcp-seo headings <url>`	H1-H6 hierarchy, single H1 check, skip-level detection
`analyze_links`	`mcp-seo links <url>`	Internal/external count, nofollow, anchor text, broken links
`analyze_images`	`mcp-seo images <url>`	Alt text, lazy loading, dimensions, WebP/AVIF, srcset
`analyze_content`	`mcp-seo content <url>`	Word count, Flesch-Kincaid readability, keywords, n-grams

Technical SEO

MCP Tool	CLI Command	What it does
`analyze_headers`	`mcp-seo headers <url>`	Cache headers, HSTS, CSP, SSL cert, cookie security
`analyze_sitemap`	`mcp-seo sitemap <url>`	XML sitemap discovery, parsing, validation (50K URL limit)
`analyze_robots`	`mcp-seo robots <url>`	robots.txt rules, user-agent blocks, crawl-delay, sitemap directives
`analyze_structured_data`	`mcp-seo structured-data <url>`	JSON-LD, Microdata, RDFa extraction and validation
`analyze_url_structure`	`mcp-seo url-structure <url>`	URL length, depth, separators, tracking params, session IDs

Read the full file on GitHub · 192 lines

Files

What ships with it

4 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.

2mo ago First seen · 192 lines · 207 tokens per session scan A 113cc00e25aa

Subscribe to this mod's changes

mcp-seo is a skill published in the GitHub repository g-battaglia/mcp-seo (1 stars, last pushed 6mo ago), licensed MIT. It adds 207 tokens to every session and 1,908 once invoked, about $0.0008 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Marketing and SEO

mcp-seo next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
mcp-seog-battaglia/mcp-seo	Skill	1	6mo ago	MIT	A	207	Claude Code, Codex
imagegenopenai/codex	Skill	134k	today	Apache-2.0	A	113	Codex
local-ai-agentsmicrosoft/ai-agents-for-beginners	Skill	79k	yesterday	MIT	A	200	Claude Code, Codex
playwright-climicrosoft/playwright	Skill	100k	yesterday	Apache-2.0	A	19	Claude Code
browser-automationopenclaw/openclaw	Skill	394k	today	MIT	A	36	Claude Code
systematic-debuggingobra/superpowers	Skill	314k	4d ago	MIT	A	21	Claude Code
next-cache-components-adoptionvercel/next.js	Skill	143k	yesterday	MIT	A	95	Claude Code

mcp-seo