seo-audit-tool

SEO Audit Tool - MCP Server

Marketing-focused MCP server for comprehensive SEO analysis. Fetches and parses live web pages to audit SEO health, analyze keywords, check links, validate sitemaps, and compare pages -- no external API keys needed.

Pricing

Plan	Price	Features
Basic	$10/mo	audit_page, analyze_keywords, analyze_sitemap — Buy →
Pro	$20/mo	All 5 tools including check_links and compare_pages — Buy →

Free trial: 3 calls total (shared across all tools), no credit card. License keys are emailed instantly after checkout. Activate via the LICENSE_KEY environment variable. More info: aivp-mcp.vercel.app

Tools

audit_page

Perform a comprehensive SEO audit on a URL. Returns a score from 0-100.

Input:

• url (string, required) - The URL to audit

Checks:

• Title tag (length, presence, keyword positioning)
• Meta description (length, quality)
• H1-H6 heading structure and hierarchy
• Image alt text coverage percentage
• Internal and external link counts
• Page load size estimation (KB)
• Mobile-friendliness (viewport meta tag)
• Schema.org / structured data presence (JSON-LD, microdata)
• Canonical URL, Open Graph tags

Output: Score 0-100 with grade (A-F), categorized issues by severity, and actionable recommendations.

analyze_keywords

Extract keyword phrases and density metrics from text content.

Input:

• text (string, required) - Plain text content to analyze

Extracts:

• Top single-word keywords (1-grams) with counts and density
• Top two-word phrases (2-grams)
• Top three-word phrases (3-grams)
• TF-IDF approximation scores
• Suggested focus keywords
• Related keyword suggestions

Output: Keyword tables with density percentages and optimization tips.

check_links

Crawl all links on a page and check their status.

Input:

• url (string, required) - The page URL to check links on

Checks:

• Identifies broken links (4xx, 5xx status codes)
• Classifies links as internal vs external
• Detects nofollow and noopener attributes
• Identifies redirect chains (301/302)
• Checks up to 100 unique links with concurrent requests

Output: Summary with broken, redirected, and nofollow link lists plus a full link table.

analyze_sitemap

Parse and validate an XML sitemap.

Input:

• url (string, required) - The sitemap.xml URL

Validates:

• XML structure and namespace declarations
• Total URL count (warns if over 50,000 limit)
• Duplicate URL detection
• lastmod date format validation
• Future date detection
• URL path pattern analysis
• Sitemap index support

Output: Validation status, statistics, URL pattern breakdown, and issues.

compare_pages

Compare SEO metrics of two URLs side by side.

Input:

• url_a (string, required) - First URL
• url_b (string, required) - Second URL

Compares:

• Overall SEO scores
• Title and meta description lengths
• Heading counts and H1 presence
• Image alt text coverage
• Internal/external link counts
• Page size
• Viewport and structured data presence
• Word count

Output: Side-by-side comparison table, winner determination, and improvement recommendations for the losing page.

Installation

No install step needed — run straight from npm:

npx -y seo-audit-tool

Or install globally:

npm install -g seo-audit-tool

Usage

stdio (Claude Desktop, Cursor, etc.)

Add to your MCP client configuration:

{
  "mcpServers": {
    "seo-audit-tool": {
      "command": "npx",
      "args": ["-y", "seo-audit-tool"],
      "env": { "LICENSE_KEY": "<your license key — omit for free trial>" }
    }
  }
}

SSE (HTTP mode)

npx -y seo-audit-tool --sse
# or with custom port:
PORT=4000 npx -y seo-audit-tool --sse

Endpoints:

• GET /sse - SSE connection
• POST /messages?sessionId=<id> - Send messages
• GET /health - Health check

Example Usage

Once connected via MCP, ask your AI assistant:

• "Audit the SEO of https://example.com"
• "Analyze the keywords in this article" (paste text)
• "Check all links on https://example.com for broken ones"
• "Analyze the sitemap at https://example.com/sitemap.xml"
• "Compare the SEO of https://example.com vs https://competitor.com"

SEO Best Practices Reference

Element	Optimal Range
Title length	50-60 characters
Meta description	120-155 characters
H1 tags per page	Exactly 1
Keyword density	1.0-2.0%
Image alt text	100% coverage
Page size	Under 1.5 MB

Technical Notes

• No external API keys required -- fetches and parses HTML directly
• Uses Node.js built-in fetch (requires Node 18+)
• Link checking uses HEAD requests with GET fallback
• Concurrent link checking (10 parallel requests, max 100 links)
• 15-second timeout per request
• Follows redirects manually to capture redirect chains

License

MIT