Web Validator by DigestSEO

Connect Remote server

claude mcp add --transport http mcp-web-validator https://web-validator-mcp.digestseo.com/mcp

{
  "mcpServers": {
    "mcp-web-validator": {
      "url": "https://web-validator-mcp.digestseo.com/mcp"
    }
  }
}

{
  "servers": {
    "mcp-web-validator": {
      "type": "http",
      "url": "https://web-validator-mcp.digestseo.com/mcp"
    }
  }
}

Settings > Connectors > Add custom connector
URL: https://web-validator-mcp.digestseo.com/mcp

Tools 8 found in our last check

• validate_html

  Use this when raw HTML markup is supplied. Sends that markup to the Nu HTML Checker hosted at validator.nu and returns validation messages. For a live URL, use audit_public_webpage.

• validate_css

  Use this when raw CSS source is supplied. Parses it inside the Worker and returns syntax messages without contacting an external service.

• audit_seo_metadata

  Use this for a focused SEO/accessibility-signal check of supplied HTML. It does not fetch a live webpage; use audit_public_webpage for a URL.

• validate_schema_markup

  Use this for a focused JSON-LD syntax check of supplied HTML. It parses JSON only and does not validate Schema.org vocabulary semantics.

• check_broken_links

  Use this for a focused check of up to 20 public HTTP(S) links found in supplied HTML. It does not fetch base_url, follow redirects, or retain response bodies.

• generate_validation_report

  Use this when HTML markup is already supplied. Combines Nu HTML validation with local CSS, SEO, accessibility-signal, and JSON-LD syntax checks. It does not fetch a webpage from base_url; use audit_public_webpage for a live URL.

• audit_public_webpage

  Use this when the user provides one live public webpage URL. Fetches one bounded static HTML response, then runs HTML validation, SEO/accessibility-signal, and JSON-LD syntax checks. It checks links only when requested and does not crawl, execute JavaScript, authenticate, or fet…

• audit_public_site

  Use this for a bounded, sitemap-first audit of a public website the user owns or is authorized to inspect. It fetches at most 8 same-origin HTML pages per call, respects robots.txt, and returns compact page summaries plus deduplicated findings. It does not recursively follow HTM…

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