SEO Analysis — Audit pages for ranking issues

Tools / SEO Analysis

Analyze Page

Full on-page SEO analysis including title, meta, headings, images, links, content length, and structured data presence. Returns a score out of 100 with prioritized issues.

Returns: SEO score (0-100), meta tag status, heading counts, image/link audit, and prioritized issues list

Parameters

url *stringThe URL to analyze

Example

Analyze a homepage

curl -H "Authorization: Bearer $TOOLROUTER_API_KEY" \
  -d '{
  "tool": "seo",
  "skill": "analyze_page",
  "input": {
    "url": "https://example.com"
  }
}' \
  https://api.toolrouter.com/v1/tools/call

Detect Schema

Find and validate all structured data (JSON-LD, Microdata, RDFa) on a page. Checks for common errors and provides recommendations for missing schema types.

Returns: List of schemas found with type, format, validation status, issues, and recommendations

Parameters

url *stringThe URL to scan for structured data

Example

Check schema markup on a product page

curl -H "Authorization: Bearer $TOOLROUTER_API_KEY" \
  -d '{
  "tool": "seo",
  "skill": "detect_schema",
  "input": {
    "url": "https://example.com/product/shoes"
  }
}' \
  https://api.toolrouter.com/v1/tools/call

Check Meta Tags

Quick audit of all meta tags on a page: title, description, canonical, robots, Open Graph, Twitter Card, viewport, and other SEO-relevant tags.

Returns: All meta tags found (title, description, OG, Twitter, canonical, robots) with issues

Parameters

url *stringThe URL to check meta tags for

Example

Check meta tags on a landing page

curl -H "Authorization: Bearer $TOOLROUTER_API_KEY" \
  -d '{
  "tool": "seo",
  "skill": "check_meta",
  "input": {
    "url": "https://example.com/pricing"
  }
}' \
  https://api.toolrouter.com/v1/tools/call

Audit Headings

Analyze the heading hierarchy (H1-H6) of a page for SEO best practices. Checks for missing H1, skipped levels, duplicates, empty headings, and content quality.

Returns: Heading hierarchy with scores, level counts, and issues like skipped levels or duplicates

Parameters

url *stringThe URL to audit heading structure

Example

Audit headings on a content page

curl -H "Authorization: Bearer $TOOLROUTER_API_KEY" \
  -d '{
  "tool": "seo",
  "skill": "audit_headings",
  "input": {
    "url": "https://example.com/blog/guide"
  }
}' \
  https://api.toolrouter.com/v1/tools/call

Analyze Content Quality

Comprehensive content quality analysis with readability scoring (Flesch-Kincaid, Gunning Fog, Coleman-Liau, SMOG, ARI), E-E-A-T signal detection, keyword density analysis, and content depth scoring.

Returns: Content quality score (0-100), readability metrics (6 algorithms), E-E-A-T signals, keyword density analysis, and content depth assessment

Parameters

url *stringThe URL to analyze content quality

Example

Analyze blog post content quality

curl -H "Authorization: Bearer $TOOLROUTER_API_KEY" \
  -d '{
  "tool": "seo",
  "skill": "analyze_content",
  "input": {
    "url": "https://example.com/blog/guide"
  }
}' \
  https://api.toolrouter.com/v1/tools/call

Technical SEO Audit

Technical SEO audit covering robots.txt validation, sitemap.xml analysis, redirect chain detection, canonical tag verification, hreflang validation, and security headers (HSTS, CSP, X-Frame-Options).

Returns: Technical SEO score (0-100), robots.txt status, sitemap validation, redirect chain, canonical check, hreflang issues, and security headers audit

Parameters

url *stringThe URL to audit technical SEO

Example

Run technical SEO audit on a site

curl -H "Authorization: Bearer $TOOLROUTER_API_KEY" \
  -d '{
  "tool": "seo",
  "skill": "audit_technical",
  "input": {
    "url": "https://example.com"
  }
}' \
  https://api.toolrouter.com/v1/tools/call

Check Core Web Vitals

Core Web Vitals analysis via PageSpeed Insights API. Returns LCP, CLS, FCP, TBT, Speed Index, TTFB, Lighthouse category scores, and CrUX real-user field data when available.

Returns: Core Web Vitals metrics (LCP, CLS, FCP, TBT, Speed Index), Lighthouse scores, CrUX field data, and traffic-light ratings per metric

Parameters

url *stringThe URL to check Core Web Vitals

strategystringDevice strategy (default: mobile)

Example

Check Core Web Vitals for a page

curl -H "Authorization: Bearer $TOOLROUTER_API_KEY" \
  -d '{
  "tool": "seo",
  "skill": "check_vitals",
  "input": {
    "url": "https://example.com"
  }
}' \
  https://api.toolrouter.com/v1/tools/call

Crawl & Audit Site

Crawl a website (up to 100 pages) with per-page SEO extraction and site-wide issue summary. Detects missing titles, thin content, broken links, duplicate meta, and missing schema across the entire site.

Returns: Site-wide SEO health score, per-page data (title, meta, headings, images, links, word count), and aggregated issue summary

Parameters

url *stringThe starting URL to crawl

max_pagesnumberMaximum pages to crawl (default: 20, max: 100)

timeout_msnumberPer-request timeout in ms (default: 10000)

Example

Crawl and audit a small site

curl -H "Authorization: Bearer $TOOLROUTER_API_KEY" \
  -d '{
  "tool": "seo",
  "skill": "crawl_site",
  "input": {
    "url": "https://example.com",
    "max_pages": 10
  }
}' \
  https://api.toolrouter.com/v1/tools/call

Analyze Link Structure

Internal link graph analysis with link depth calculation, orphan page detection, anchor text distribution, external link audit, and broken link checking via HEAD requests.

Returns: Link structure score (0-100), link depth map, orphan pages, most/least linked pages, anchor text distribution, and broken links

Parameters

url *stringThe URL to analyze link structure

max_pagesnumberMaximum pages to crawl for link analysis (default: 30, max: 50)

check_brokenbooleanWhether to check for broken links via HEAD requests (default: true)

Example

Analyze internal link structure

curl -H "Authorization: Bearer $TOOLROUTER_API_KEY" \
  -d '{
  "tool": "seo",
  "skill": "analyze_links",
  "input": {
    "url": "https://example.com"
  }
}' \
  https://api.toolrouter.com/v1/tools/call

Audit Images

Image SEO audit checking alt text, file sizes, dimensions, lazy loading, responsive images (srcset), and modern format usage (WebP/AVIF). Includes per-image analysis and aggregate statistics.

Returns: Image SEO score (0-100), per-image analysis (alt, dimensions, size, format, lazy loading), and aggregate statistics

Parameters

url *stringThe URL to audit images

check_sizesbooleanWhether to HEAD-request images to check file sizes (default: true)

Example

Audit images on a product page

curl -H "Authorization: Bearer $TOOLROUTER_API_KEY" \
  -d '{
  "tool": "seo",
  "skill": "audit_images",
  "input": {
    "url": "https://example.com/products/shoes"
  }
}' \
  https://api.toolrouter.com/v1/tools/call

Extract Keywords

TF-IDF keyword extraction from page content with density analysis by position (title, H1, meta description, first paragraph, URL). Includes n-gram analysis for multi-word phrases.

Returns: Top keywords with TF-IDF scores, density percentages, position prominence (title/H1/meta/paragraph), and n-gram phrases

Parameters

url *stringThe URL to extract keywords from

max_keywordsnumberMaximum keywords to return (default: 20, max: 50)

Example

Extract keywords from a blog post

curl -H "Authorization: Bearer $TOOLROUTER_API_KEY" \
  -d '{
  "tool": "seo",
  "skill": "extract_keywords",
  "input": {
    "url": "https://example.com/blog/seo-guide"
  }
}' \
  https://api.toolrouter.com/v1/tools/call

Compare Pages

Side-by-side SEO comparison of two URLs across all metrics: content length, readability, meta tags, schema, headings, response time, and keyword overlap. Determines winner per category.

Returns: Per-category comparison with winner designation, metric values for both pages, and overall winner summary

Parameters

url_a *stringFirst URL to compare

url_b *stringSecond URL to compare

Example

Compare two competing pages

curl -H "Authorization: Bearer $TOOLROUTER_API_KEY" \
  -d '{
  "tool": "seo",
  "skill": "compare_pages",
  "input": {
    "url_a": "https://example.com/page",
    "url_b": "https://competitor.com/page"
  }
}' \
  https://api.toolrouter.com/v1/tools/call

Quick Start

MCP (Claude Code)

claude mcp add --transport stdio \
  --env TOOLROUTER_API_KEY=YOUR_API_KEY \
  toolrouter -- npx -y toolrouter-mcp

REST API

curl -H "Authorization: Bearer $TOOLROUTER_API_KEY" \
  -d '{"tool":"seo","skill":"analyze_page","input":{}}' \
  https://api.toolrouter.com/v1/tools/call

Use Cases

Open Audit Competitor Backlinks

Audit Competitor Backlinks

Analyze your competitors' backlink profiles to discover link-building opportunities and understand their SEO strategy.

SEO Analysis4 agent guides

Open Check Meta Tags Before Launch

Check Meta Tags Before Launch

Verify all meta tags are properly configured before launching or redesigning your website.

SEO Analysis4 agent guides

Open Search Papers by Topic

Search Papers by Topic

Find relevant academic papers on any research topic across millions of scholarly publications.

Academic Research4 agent guides

Open Research Competitor Ad Creatives

Research Competitor Ad Creatives

Research what ads your competitors are running across Facebook and Google to understand their messaging and creative strategy.

Ad Library Search4 agent guides

View all use cases for SEO Analysis→

Workflows

Open Comprehensive Website Audit

Comprehensive Website Audit

Run a full-spectrum website audit combining SEO analysis, performance testing, site crawling, and visual documentation in one workflow.

SEO Analysis

Lighthouse Audit

Site Crawler

Web Screenshot

4 steps4 tools

Open Competitor Analysis Suite

Competitor Analysis Suite

Build a complete competitive intelligence dossier by combining company research, SEO analysis, social media audits, and ad library searches.

Competitor Research

SEO Analysis

Social Profiles

Ad Library Search

4 steps4 tools

Open Local SEO Optimization

Local SEO Optimization

Optimize your local search presence with schema markup auditing, GEO optimization, and local search result analysis.

SEO Analysis

GEO

Web Search

3 steps3 tools

Open SEO Content Strategy

SEO Content Strategy

Build a data-driven SEO content strategy from keyword research through SERP analysis to deep topic research for content differentiation.

Keyword Research

SEO Analysis

Web Search

Deep Research

4 steps4 tools

View all 12workflows →

Frequently Asked Questions

What does the SEO score actually measure?

It scores ranking issues across meta tags, headings, content quality, structured data, images, links, Core Web Vitals, and technical SEO, with a 0 to 100 style diagnostic view.

Can I use it on a single page or an entire site?

Both. You can audit one URL, crawl a site, or compare pages, depending on whether you want a page-level fix list or a broader site review.

Will it show Core Web Vitals and page speed issues?

Yes. Core Web Vitals are part of the audit, so performance problems show up alongside SEO and accessibility findings.

What should I set as the default input?

Set your primary domain. The tool uses that when no URL is provided, which is handy for repeated audits.