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blokker.nl

Scan history Scanned 2026-08-29 12:37 UTC
Changes since selected scan Not comparable because methodology information is unavailable

Result summary

Measured stable-core coverage

62/100

Methodology grade

C

Methodology 2026-08-29

32 core checkpoints assessed

Find
3/7 passed
Read
14/23 passed
Act
2/2 passed
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Action plan

Priority actions Prioritized by exact impact on the overall stable-core score.
Failed XML Sitemap +6 overall pts

No valid XML sitemap found. Checked: blokker.nl/sitemap.xml, blokker.nl/sitemap_index.xml.

XML Sitemap
HIGH

Sitemaps help AI crawlers discover all your pages efficiently. Without one, crawlers may miss important content or waste time discovering your site structure.

Create an XML sitemap and reference it in robots.txt with a Sitemap: directive.

sitemap.xml html
<!-- /sitemap.xml -->
<?xml version="1.0" encoding="UTF-8"?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
  <url>
    <loc>https://blokker.nl/</loc>
    <lastmod>2025-01-15</lastmod>
    <changefreq>weekly</changefreq>
    <priority>1.0</priority>
  </url>
  <url>
    <loc>https://blokker.nl/about</loc>
    <lastmod>2025-01-10</lastmod>
  </url>
</urlset>

# Add to /robots.txt:
Sitemap: https://blokker.nl/sitemap.xml
Failed High-value schema types +5 overall pts

No high-value schema types found. We check for 17 recognized types including Article, Product, SoftwareApplication, FAQPage, LocalBusiness, VideoObject, and more.

High-value schema types
HIGH

Certain schema types (Article, Product, FAQPage, etc.) trigger rich results in Google and Bing and give agents typed, unambiguous entities to extract instead of inferring from prose. Their effect on AI-search citations is indirect, via the search indexes that feed products like ChatGPT and Perplexity.

Add JSON-LD markup for content-appropriate types like Article, Product, SoftwareApplication, FAQPage, LocalBusiness, Service, Event, or VideoObject so agents and search engines can identify your content type and extract structured facts reliably.

JSON-LD html
<script type="application/ld+json">
{
  "@context": "https://schema.org",
  "@type": "SoftwareApplication",
  "name": "Your App Name",
  "operatingSystem": "Web",
  "applicationCategory": "BusinessApplication",
  "offers": {
    "@type": "Offer",
    "price": "0",
    "priceCurrency": "USD"
  }
}
</script>
Failed Heading hierarchy +4 overall pts

No headings found on the page.

Heading hierarchy
HIGH

AI agents use headings to build a content outline and determine topic hierarchy. A clear h1→h2→h3 structure helps AI systems extract and summarize your content accurately.

Add a clear <h1> heading and use sequential heading levels (h1 -> h2 -> h3). Proper heading hierarchy helps AI agents understand page structure and content importance. See developer.mozilla.org/en-US/docs/Web/HTML/Element/Heading_Elements for heading element documentation.

HTML html
<h1>Page Title - One Per Page</h1>
  <h2>Main Section</h2>
    <h3>Subsection</h3>
    <h3>Subsection</h3>
  <h2>Another Section</h2>
    <h3>Subsection</h3>
Failed Content freshness signals +4 overall pts

No content freshness signals found. AI systems cannot determine when this content was last updated.

Content freshness signals
HIGH

AI systems prefer recent content, and several engines surface newer pages more often. Clear date signals (dateModified, article:modified_time) help AI determine your content's recency.

Add content date signals so AI systems can assess freshness. Use dateModified in JSON-LD, <meta property="article:modified_time">, or at minimum ensure your server sends a Last-Modified header.

JSON-LD html
<!-- Option 1: JSON-LD (preferred) -->
<script type="application/ld+json">
{
  "@context": "https://schema.org",
  "@type": "Article",
  "headline": "Your Article Title",
  "datePublished": "2026-01-15T09:00:00Z",
  "dateModified": "2026-02-28T14:30:00Z"
}
</script>

<!-- Option 2: Open Graph meta tags -->
<meta property="article:published_time" content="2026-01-15T09:00:00Z">
<meta property="article:modified_time" content="2026-02-28T14:30:00Z">

<!-- Option 3: HTML time element -->
<time datetime="2026-02-28T14:30:00Z">Updated February 28, 2026</time>

<!-- Server-level: Ensure Last-Modified header is sent -->
# Nginx: add_header Last-Modified $date_gmt;
# Apache: FileETag MTime (default)
Failed Link response headers +4 overall pts

No Link response header found on the root page. Agents must parse HTML to discover related resources.

Link response headers
HIGH

Link response headers (RFC 8288) tell agents about machine-readable resources at request time. Cloudflare's isitagentready.com and other scanners explicitly look for `api-catalog`, `service-desc`, `service-doc`, and `sitemap` rels to enable agent discovery without parsing HTML.

Add an RFC 8288 Link response header advertising your OpenAPI document, API catalog, and sitemap so agents can discover them at request time.

Server config plain
# Nginx
add_header Link '</.well-known/api-catalog>; rel="api-catalog", </openapi.json>; rel="service-desc", </sitemap.xml>; rel="sitemap"' always;

# Phoenix / Plug
plug :put_link_headers

defp put_link_headers(conn, _opts) do
  put_resp_header(
    conn,
    "link",
    "</.well-known/api-catalog>; rel=\"api-catalog\", " <>
      "</openapi.json>; rel=\"service-desc\", " <>
      "</sitemap.xml>; rel=\"sitemap\""
  )
end

# Test: curl -I https://blokker.nl/ | grep -i '^link:'
Failed Content-Security-Policy +4 overall pts

Content-Security-Policy header is not set.

Content-Security-Policy
HIGH

Content-Security-Policy prevents XSS and injection attacks. For AI agents that interact with your site, CSP ensures the page content hasn't been tampered with by malicious scripts.

Add a Content-Security-Policy header with directives like default-src, script-src, and style-src.

Server config plain
# Nginx
add_header Content-Security-Policy "default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline'; img-src 'self' data: https:; font-src 'self'" always;

# Apache (.htaccess)
Header always set Content-Security-Policy "default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline'; img-src 'self' data: https:; font-src 'self'"
Failed Entity linking (@id) +3 overall pts

No JSON-LD entities use @id for entity linking.

Entity linking (@id)
HIGH

Entity linking via @id creates a connected graph of your content. AI systems can follow these references to build deeper understanding of relationships between your pages, organization, and content.

Add @id properties to your JSON-LD entities (e.g. "@id": "blokker.nl/#organization") to enable cross-referencing between entities.

JSON-LD html
<script type="application/ld+json">
{
  "@context": "https://schema.org",
  "@graph": [
    {
      "@type": "Organization",
      "@id": "https://blokker.nl/#organization",
      "name": "Your Company",
      "url": "https://blokker.nl"
    },
    {
      "@type": "WebSite",
      "@id": "https://blokker.nl/#website",
      "name": "Your Site",
      "url": "https://blokker.nl",
      "publisher": { "@id": "https://blokker.nl/#organization" }
    }
  ]
}
</script>
Failed Trust anchor pages +3 overall pts

Verified none; missing or thin: about, contact, privacy.

Trust anchor pages
HIGH

Agents check about, contact and privacy pages to verify a business is legitimate and to answer contact questions before recommending it. Thin or missing trust pages read as an anonymous site.

Publish real /about, /contact and /privacy pages (or localized equivalents linked from the home page) with at least 500 characters of content each, and link them from the footer so agents and crawlers can find them.

Partial AI crawler directives +3 overall pts

No AI crawlers explicitly mentioned in robots.txt (implicit default allow applies).

AI crawler directives
MEDIUM

Major AI systems use dedicated crawlers (GPTBot, ClaudeBot, Amazonbot). Explicit directives signal whether you want your content included in AI training and search results.

Add a wildcard Allow: / or explicit AI user-agent directives to signal crawling intent.

robots.txt plain
# Add to your /robots.txt - explicit Allow for AI crawlers
User-agent: GPTBot
Allow: /

User-agent: ClaudeBot
Allow: /

User-agent: Google-Extended
Allow: /

User-agent: Amazonbot
Allow: /

User-agent: ChatGPT-User
Allow: /

User-agent: PerplexityBot
Allow: /
Failed Semantic HTML elements +2 overall pts

Found 2/5 semantic elements: header, nav.

Semantic HTML elements
HIGH

Browser agents may combine the DOM, accessibility tree, and screenshots. Semantic elements like <main>, <nav>, and <article> provide durable structural meaning across those representations.

Add missing semantic elements: article or section, main, footer. Semantic HTML helps AI agents identify page regions and navigate content structure. See developer.mozilla.org/en-US/docs/Glossary/Semantics#semantics_in_html for semantic HTML documentation.

HTML html
<body>
  <header>
    <nav><!-- primary navigation --></nav>
  </header>
  <main>
    <article>
      <h1>Page Title</h1>
      <section><!-- content section --></section>
    </article>
  </main>
  <footer><!-- site footer --></footer>
</body>
Failed Image alt text +2 overall pts

5/20 images have alt attributes (15 missing).

Image alt text
HIGH

Some browser agents can inspect screenshots, but image understanding varies by access mode. Descriptive alt text provides a durable machine-readable description of image content and context.

Add descriptive alt text to all images. Use alt="" for purely decorative images. Missing alt attributes prevent AI agents from understanding image content. See w3.org/WAI/WCAG22/Understanding/non-text-content.html for WCAG guidelines on non-text content.

HTML html
<!-- Descriptive alt text for meaningful images -->
<img src="chart.png" alt="Revenue growth chart showing 40% increase in Q4 2025">

<!-- Empty alt for purely decorative images -->
<img src="divider.svg" alt="">
Partial HSTS header +1 overall pts

HSTS active with max-age=31536000. If you serve content on subdomains, consider adding includeSubDomains.

HSTS header
MEDIUM

HSTS prevents protocol downgrade attacks by telling browsers to always use HTTPS. AI agents that follow redirects benefit from HSTS as it eliminates insecure initial connections.

If your site uses subdomains, adding includeSubDomains ensures they are also protected by HSTS.

Server config plain
# Nginx
add_header Strict-Transport-Security "max-age=31536000; includeSubDomains; preload" always;

# Apache (.htaccess)
Header always set Strict-Transport-Security "max-age=31536000; includeSubDomains; preload"
Partial Author attribution +1 overall pts

Author meta tag found. For stronger E-E-A-T signals, also add author information to your JSON-LD structured data.

Author attribution
MEDIUM

Author attribution gives agents and search engines a clear, machine-readable signal of who stands behind the content and links it to a known entity. This supports trust and provenance (E-E-A-T) and lets systems attribute the content to its author.

Upgrade to JSON-LD author attribution by adding an "author" property with @type "Person" to your Article or BlogPosting schema. Structured authorship connects your content to a known entity and is parsed more reliably than meta tags.

JSON-LD html
<!-- Option 1: JSON-LD author in Article (preferred) -->
<script type="application/ld+json">
{
  "@context": "https://schema.org",
  "@type": "Article",
  "headline": "Your Article Title",
  "author": {
    "@type": "Person",
    "name": "Jane Smith",
    "url": "https://blokker.nl/team/jane-smith"
  }
}
</script>

<!-- Option 2: Meta tag -->
<meta name="author" content="Jane Smith">

<!-- Option 3: Linked author -->
<a rel="author" href="https://blokker.nl/team/jane-smith">Jane Smith</a>
Fix with AI Skills
$ /plugin marketplace add bartwaardenburg/isagentready-skills

Detailed results

Agent Protocols

Weight 15% · No applicable checkpoints · 5 bonus opportunities

Not assessed
AI Content Discovery

Weight 30% · 3 failed, 1 partial · 5 bonus opportunities

58/100
Security & Trust

Weight 15% · 1 failed, 1 partial

75/100
Content & Semantics

Weight 20% · 3 failed checkpoints

67/100
AI Search Signals

Weight 20% · 3 failed, 1 partial

55/100
Supplemental evidence AI visitor test and training exposure. The score does not change.
AI Training Exposure

Does not affect the readiness score

Supplemental

No AI training protections detected. Your content may be freely used for AI model training.

Common Crawl presence Unknown

Could not determine the latest Common Crawl index.

Training crawler blocking Not found

No training crawlers are blocked in robots.txt. All known AI training bots can access your content.

TDMRep declaration Not found

No TDMRep file found at /.well-known/tdmrep.json. The TDM Reservation Protocol (W3C) lets you declare whether you reserve text and data mining rights. See w3.org/community/reports/tdmrep/CG-FINAL-tdmrep-20240510 for the specification.

ai.txt policy Not found

No ai.txt file found. ai.txt lets you declare AI usage preferences for your content.

Web Bot Auth Not found

No Web Bot Auth signature key directory found. Bots cannot prove their identity to origins via signed HTTP requests.

Next steps

DEVELOPER TOOLS

Scan and fix from your editor. Install the MCP server to scan, and AI skills to fix.

SCAN
$ claude mcp add isagentready-mcp -- npx -y isagentready-mcp
FIX
$ /plugin marketplace add bartwaardenburg/isagentready-skills
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