Claude SEO is an open-source Claude Code plugin that runs specialized agents and skills to audit websites across technical SEO, content quality, structured data, AI-search optimization, local and e-commerce SEO, and international SEO. SEO practitioners use it to produce prioritized recommendations based on primary-source guidance, with optional extensions for external data and crawling.
Borrowing it
Nothing to install: this file belongs to AgriciDaniel/claude-seo. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/AgriciDaniel/claude-seo/main/CLAUDE.mdgit clone --depth 1 https://github.com/AgriciDaniel/claude-seoWrote 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.
[](https://agentmods.dev/instructions/agricidaniel/claude-seo/claude-md)<a href="https://agentmods.dev/instructions/agricidaniel/claude-seo/claude-md"><img src="https://agentmods.dev/badge/instructions/agricidaniel/claude-seo/claude-md/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.
<a href="https://agentmods.dev/instructions/agricidaniel/claude-seo/claude-md"><img src="https://agentmods.dev/badge/instructions/agricidaniel/claude-seo/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.04503 | $0.04503 |
| Opus 5.5 | $0.01801 | $0.01801 |
| Sonnet 5.5 | $0.00901 | $0.00901 |
| Haiku 4.5 | $0.00450 | $0.00450 |
Grade A, and why
claude-seo CLAUDE.md 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 yesterday.
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.
How it starts
The opening of the file, as written. The whole thing — 315 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Claude SEO: Universal SEO Analysis Skill
Project Overview
This repository contains Claude SEO, a Tier 4 Claude Code skill for comprehensive SEO analysis across all industries. It follows the Agent Skills open standard and the 3-layer architecture (directive, orchestration, execution). 26 sub-skills (22 core + 1 orchestrator + 1 framework integration + 2 extension mirrors), 19 sub-agents (16 core + 1 framework integration + 2 extension mirrors), and an extensible reference system cover technical SEO, content quality, schema markup, image optimization, sitemap architecture, AI search optimization, local SEO (GBP, citations, reviews, map pack), maps intelligence, semantic topic clustering, search experience optimization (SXO), SEO drift monitoring, e-commerce SEO, and international SEO with cultural adaptation profiles. Matomo is available as an optional extension for self-hosted analytics.
Architecture
claude-seo/
CLAUDE.md # Project instructions (this file)
CONTRIBUTORS.md # Community credits (Pro Hub Challenge)
AGENTS.md # Multi-platform agent instructions (Cursor, Antigravity)
.claude-plugin/
plugin.json # Plugin manifest (v2.5.0)
marketplace.json # Marketplace catalog for distribution
skills/ # 26 sub-skills (auto-discovered)
seo/ # Main orchestrator skill
SKILL.md # Entry point, routing table, core rules
references/ # On-demand knowledge files (13 files)
seo-audit/SKILL.md # Full site audit with parallel agents
seo-page/SKILL.md # Deep single-page analysis
seo-technical/SKILL.md # Technical SEO (9 categories)
seo-content/SKILL.md # E-E-A-T and content quality
seo-content-brief/SKILL.md # Content brief generation
seo-schema/SKILL.md # Schema.org markup detection/generation
seo-sitemap/SKILL.md # XML sitemap analysis/generation
seo-images/SKILL.md # Image optimization analysis
seo-geo/SKILL.md # AI search / GEO optimization
seo-agentic/ # Agent readiness (Lighthouse Agentic Browsing, WebMCP)
SKILL.md
references/ # Lighthouse category, access policy, discovery, WebMCP, vendor matrix
seo-local/SKILL.md # Local SEO (GBP, citations, reviews, map pack)
seo-maps/SKILL.md # Maps intelligence (geo-grid, GBP audit, reviews, competitors)
seo-plan/SKILL.md # Strategic SEO planning
seo-flow/SKILL.md # FLOW framework integration
seo-programmatic/SKILL.md # Programmatic SEO at scale
seo-competitor-pages/SKILL.md # Competitor comparison pages
seo-hreflang/SKILL.md # International SEO / hreflang
seo-google/ # Google SEO APIs
SKILL.md
references/ # API reference files (11 files)
seo-backlinks/SKILL.md # Backlink profile analysis
seo-cluster/ # Semantic topic clustering (v1.9.0, by Lutfiya Miller)
SKILL.md
references/ # Clustering methodology, architecture, workflow
templates/ # cluster-map.html interactive visualization
seo-sxo/ # Search Experience Optimization (v1.9.0, by Florian Schmitz)
SKILL.md
references/ # Page-type taxonomy, user stories, personas, wireframes
seo-drift/ # SEO drift monitoring (v1.9.0, by Dan Colta)
SKILL.md
references/ # Comparison rules (17 rules, 3 severity levels)
seo-ecommerce/ # E-commerce SEO (v1.9.0, by Matej Marjanovic)
SKILL.md
references/ # Marketplace API endpoints
seo-dataforseo/SKILL.md # Live SEO data via DataForSEO MCP (extension mirror)
seo-image-gen/ # AI image generation for SEO assets (extension mirror)
SKILL.md
references/ # Image gen reference files (7 files)
agents/ # 19 subagents (auto-discovered)
seo-technical.md # Crawlability, indexability, security
seo-content.md # E-E-A-T, readability, thin content
seo-schema.md # Structured data validation
seo-sitemap.md # Sitemap quality gates
seo-performance.md # Core Web Vitals, page speed
seo-visual.md # Screenshots, mobile rendering
seo-geo.md # AI crawler access, GEO, citability
seo-agentic.md # Agent readiness, Lighthouse Agentic Browsing
seo-local.md # GBP, NAP, citations, reviews, local schema
seo-maps.md # Geo-grid, GBP audit, reviews, competitor radius
seo-google.md # Google API analyst (CrUX, GSC, GA4)
seo-backlinks.md # Backlink profile analyst (Moz, Bing, CC, verify)
seo-dataforseo.md # DataForSEO data analyst
seo-image-gen.md # SEO image audit analyst
seo-cluster.md # Semantic clustering analysis
seo-sxo.md # Search experience optimization
seo-drift.md # SEO drift monitoring
seo-ecommerce.md # E-commerce SEO analysis
seo-flow.md # FLOW framework integration
hooks/ # Quality gate hooks
hooks.json # PostToolUse schema validation
scripts/ # 60 Python execution scripts
google_auth.py # Credential management (OAuth, SA, API key, 4-tier detection)
backlinks_auth.py # Backlink API credential management (Moz, Bing)
moz_api.py # Moz Link Explorer API (DA/PA, spam, domains, anchors)
bing_webmaster.py # Bing Webmaster Tools API (registered-site links/comparison)
commoncrawl_graph.py # Common Crawl web graph parser (PageRank, in-degree)
verify_backlinks.py # Backlink existence verification crawler
pagespeed_check.py # PSI v5 + CrUX API
crux_history.py # CrUX History API (25-week trends)
gsc_query.py # Search Console (queries, pages, sitemaps, sites)
gsc_inspect.py # URL Inspection (single + batch)
indexing_notify.py # Indexing API v3 (URL_UPDATED/URL_DELETED)
ga4_report.py # GA4 organic traffic reports
matomo_auth.py # Matomo credential management (extension)
matomo_report.py # Matomo Reporting API client (extension)
keywordseverywhere_api.py # Keywords Everywhere (Open PageRank) backlinks fallback
google_report.py # PDF/HTML report generator (WeasyPrint + matplotlib)
youtube_search.py # YouTube Data API v3
nlp_analyze.py # Cloud Natural Language API
keyword_planner.py # Google Ads Keyword Planner
fetch_page.py # Page fetcher with UA rotation
parse_html.py # HTML parser for SEO elements
capture_screenshot.py # Playwright screenshots
analyze_visual.py # Visual analysis helper
drift_baseline.py # SEO drift baseline capture (SQLite)
drift_compare.py # SEO drift comparison engine (17 rules)
drift_report.py # SEO drift HTML report generator
drift_history.py # SEO drift history query
dataforseo_costs.py # DataForSEO cost estimation and budget tracking
dataforseo_merchant.py # Google Shopping / Amazon data fetching
dataforseo_normalize.py # DataForSEO response normalization utility
sync_flow.py # FLOW prompt library sync (GitHub API, CC BY 4.0 headers, --dry-run, --ref)
url_safety.py # Canonical URL/SSRF safety module (validate, DNS-pin, safe fetch)
render_page.py # Shared headless renderer (SPA-aware, Playwright)
lcp_subparts.py # LCP subparts breakdown via CrUX API
preload_check.py # Speculation Rules / bfcache / prerender / preload detector
agent_ux_check.py # Agent-friendly page auditor
agentic_check.py # Agent-readiness HTTP auditor (robots, llms.txt, Markdown, ARD, well-known, WebMCP)
agentic_fix.py # Agent-readiness fix drafter (robots Content-Signal, llms.txt, ai-catalog, WebMCP)
lighthouse_agentic.py # Lighthouse Agentic Browsing fraction reader (PSI or saved JSON)
content_quality.py # QRG-aligned content quality detector
metadata_template.py # Templated title/description detector (title echo + stock CTA)
content_humanize.py # AI-pattern remover (rewrites AI-typical phrasing)
content_verify.py # Claim extractor + citation-gap detector
schema_generate.py # JSON-LD generators for high-leverage v2 schema types
schema_ecommerce_validate.py # Product schema validator (merchant-listing requirements)
iptc_ai_label.py # IPTC DigitalSourceType audit/injection for AI imagery
parasite_risk.py # Parasite-SEO risk scanner
gbp_deprecation_lint.py # GBP feature-deprecation linter
domain_history.py # Expired-domain heritage check
seo_updates.py # Primary-source Google updates query tool
indexnow_submit.py # IndexNow submitter
ucp_check.py # UCP (Universal Commerce Protocol) profile auditor
unlighthouse_run.py # Unlighthouse CLI wrapper (site-wide Lighthouse)
validate_backlink_report.py # Backlink report validation
portability_check.py # Cross-platform portability lint for SKILL.md files
consistency_check.py # Reference-graph gate: dead refs, routing, lock, orphans
release_sign.py # SHA-256 manifest generator for release signing
verify_release.py # Verify checkout integrity against a release manifest
sitemap_discovery.py # Sitemap discovery (robots.txt, common paths)
runtime.py # Managed runtime behind the claude-seo launcher
schema/ # Schema.org JSON-LD templates
extensions/ # Optional add-on install helpers
dataforseo/ # DataForSEO MCP install scripts
firecrawl/ # Firecrawl MCP install scripts
banana/ # Banana MCP install scripts
ahrefs/ # Ahrefs MCP install scripts
bing-webmaster/ # Bing Webmaster and IndexNow install scripts
profound/ # Profound MCP install scripts
seranking/ # SE Ranking MCP install scripts
unlighthouse/ # Unlighthouse install scripts
docs/ # Extended documentation
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.
- yesterday Changed · -4 tokens per session e09bd78e4715
- 19d ago Changed 9bc0bfa92919
- 24d ago Changed bf71b4bdd7e2
- 1mo ago Changed · +13 lines · +251 tokens per session 5a68fccd1f68
- 1mo ago Changed · -1 lines · -89 tokens per session 6391f80613da
- 1mo ago First seen · 303 lines · 4,345 tokens per session scan A f2ab51a845fa
claude-seo CLAUDE.md is an instructions file published in the GitHub repository AgriciDaniel/claude-seo (19,878 stars, last pushed 2d ago), licensed MIT. It adds 4,503 tokens to every session, about $0.0180 per session on Opus 5.5. 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.
Other instructions, from other repositories
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
deepseek-harness AGENTS.md
AGENTS.md instructions for deepseek-ai/deepseek-harness, covering agents.md, pre-stable apis and released session data, repository layout, commands and host sandbox failures.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).