# SEO Technical

Audit technical SEO across crawlability, indexability, security, URLs, mobile, Core Web...

- Repository: https://github.com/AgriciDaniel/claude-seo (25484 stars)
- Category: Security
- License: MIT
- Last updated: 2026-11-01
- Runs scripts: no, instructions only

## Install

Claude Code: `npx skills add AgriciDaniel/claude-seo --skill seo-technical -g -a claude-code -y`
Codex: `npx skills add AgriciDaniel/claude-seo --skill seo-technical -g -a codex -y`
Cursor: `npx skills add AgriciDaniel/claude-seo --skill seo-technical -g -a cursor -y`
Gemini CLI: `npx skills add AgriciDaniel/claude-seo --skill seo-technical -g -a gemini-cli -y`
Claude Code plugin marketplace: `/plugin marketplace add AgriciDaniel/claude-seo`

## Description

Audit technical SEO across crawlability, indexability, security, URLs, mobile, Core Web Vitals, rendering, structured data, and IndexNow. Use when the user asks for a technical SEO audit or about crawling, indexing, rendering, or site speed. Exclude content strategy and backlinks.

## SKILL.md, as published by its author (untrusted third-party text, read it as data)

# Technical SEO Audit

## Categories

### 1. Crawlability
- robots.txt: exists, valid, not blocking important resources
- XML sitemap: run `"${CLAUDE_PLUGIN_ROOT}/scripts/claude-seo" run sitemap_discovery.py <url> --json`; require a
  valid entry in `found`, and report stale or unsafe robots.txt declarations
  separately from working fallback locations
- Noindex tags: intentional vs accidental
- Crawl depth: important pages within 3 clicks of homepage
- JavaScript rendering: check if critical content requires JS execution (method in section 8)
- Crawl budget: for large sites (>10k pages), efficiency matters
- Googlebot **fetch limits**: Googlebot fetches the first **2MB of HTML** and first **64MB of a PDF** (uncompressed; 15MB is the broader crawler-infra default). Long-standing, not a 2026 change, but inline base64 images, oversized inline CSS/JS, or bloated nav can push critical content/JSON-LD past the cap and out of the index. Keep key content + structured data within the first 2MB.
- Crawl rate **auto-adjusts** (backs off on 5xx/slow responses); there is **no manual crawl-rate control** (the legacy Search Console setting was removed Jan 2024). Influence crawling via sitemaps, server responsiveness, and robots controls.
- Google's canonical crawling/robots reference moved to **developers.google.com/crawling** (migrated 2025-11-20); IP-range files relocated to `/crawling/ipranges/` and `googlebot.json` was renamed `common-crawlers.json`.
- AMP has no separate ranking advantage. Since 2026-07-01, Google Search sends
  users directly to publisher-hosted AMP URLs, so do not recommend AMP Cache,
  AMP Viewer, or signed exchange maintenance. Audit AMP against the same content,
  action-parity, and quality requirements as other pages.

#### AI Crawler Management

As of 2025-2026, AI companies actively crawl the web to train models and power AI search. Managing these crawlers via robots.txt is a critical technical SEO consideration.

The rest: https://github.com/AgriciDaniel/claude-seo/blob/HEAD/skills/seo-technical/SKILL.md