Website-Bericht: 1 gemessene Seite. Gesamtbewertung: Mangelhaft.
Site-Score · ebay.com
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Gibt es Substanz, die ein Agent lesen kann?
Homepage does not serve Markdown via content negotiation
Serve a Markdown representation of your pages when agents request "Accept: text/markdown". Agents like Claude Code and Cursor ask for it, and Markdown cuts token usage by roughly 80% against HTML. Cloudflare ("Markdown for Agents") and Vercel can enable this without code changes.
No <link rel="alternate" type="text/markdown"> fallback found on the homepage
If you cannot enable content negotiation, advertise a Markdown version with <link rel="alternate" type="text/markdown" href="/index.md"> so agents can discover it.
No JSON-LD structured data found
Add a <script type="application/ld+json"> block in your HTML <head> with schema.org structured data describing your site, organization, or person.
Sparse server-rendered content (34 words, 207 chars)
Render at least the main page content server-side. Many AI crawlers (GPTBot, ClaudeBot, CCBot) do not execute JavaScript and will see only the static HTML.
Text-to-markup ratio is healthy (11.3%)
Only 2 semantic landmark(s) found
Use semantic HTML tags so AI agents can understand page structure: <header>, <nav>, <main>, <article>, <section>, <footer>.
No <h1> heading found
Add a single <h1> describing the page. Agents and search engines treat the H1 as the primary topic indicator.
<title> is too short (17 chars): "Error Page | eBay"
Lengthen the title to 20-70 characters with a clear topic indicator.
<meta name="description"> is missing
Add <meta name="description" content="..."> in <head> with a 70-160 character summary. Agents use this as the canonical short description.
No <link rel="canonical"> found
Add <link rel="canonical" href="https://your-site.com/page"> so agents have an unambiguous URL to cite even when crawled via a redirect or query-string variant.
<html lang="en">
UTF-8 charset declared
Viewport meta present: "width=device-width,initial-scale=1"
1/1 interactive elements have an accessible name
Method note: this reads markup, not a rendered accessibility tree
Kann ein Agent die Seite überhaupt abrufen?
Baseline homepage request failed — cannot compare crawler access
Homepage is marked noindex
A noindex page is invisible to every search-grounded assistant, because they all cite from a search index. If this is deliberate, nothing else in this check matters. If it is not, remove the directive.
Homepage request failed — cannot assess crawl efficiency
Site is served over HTTPS
Could not verify HTTP→HTTPS redirect
Test manually: a request to http://your-site.com should respond with 301 → https://your-site.com.
No Strict-Transport-Security header
Add: Strict-Transport-Security: max-age=31536000; includeSubDomains; preload. This locks browsers and many agents to HTTPS for 1 year.
A missing page redirects (301) instead of returning 404
A redirect on a nonexistent path hides the error. Return 404 or 410 so a client can tell the difference.
Homepage answers after 1 redirect
HEAD requests are supported
Character encoding declared in the document (not in the Content-Type header)
Findet ein Agent, was Sie veröffentlichen?
/llms.txt not found
Create a /llms.txt file at your site root following the llmstxt.org specification. It should be a Markdown file starting with "# Your Site Name" and include a description, sections, and links.
No AI meta tags (ai:*) found
Add AI meta tags to your HTML <head>: <meta name="ai:summary" content="Brief description">, <meta name="ai:content_type" content="website">, <meta name="ai:author" content="Your Name">.
No rel="alternate" link to llms.txt in HTML
Add to your <head>: <link rel="alternate" type="text/plain" href="/llms.txt" title="LLM-optimized content">
No rel="alternate" link to the Agent Card in HTML
Add to your <head>: <link rel="alternate" type="application/json" href="/.well-known/agent-card.json" title="Agent Card">
No rel="me" identity links found
Add rel="me" links to verify your identity across platforms: <link rel="me" href="https://github.com/yourname">, <link rel="me" href="https://twitter.com/yourname">.
No OpenGraph meta tags found
Add at minimum og:title, og:description, og:url, og:type, and og:image. Agents and link previews depend on these.
No Twitter Card meta tags found
Add twitter:card, twitter:title, twitter:description, and twitter:image so X / Threads / Bluesky / Discord agents render link previews correctly.
Missing critical header: Strict-Transport-Security
Add the Strict-Transport-Security response header to your server configuration. This is a critical security header.
Missing critical header: X-Content-Type-Options
Add the X-Content-Type-Options response header to your server configuration. This is a critical security header.
Only 0/7 security headers present
Add security headers like Strict-Transport-Security, X-Content-Type-Options, X-Frame-Options, and Referrer-Policy to your server response.
No Link header for AI discovery (llms.txt, Agent Card)
Add a Link response header pointing to your AI discovery files: Link: </llms.txt>; rel="alternate"; type="text/plain", </.well-known/agent-card.json>; rel="alternate"; type="application/json"
No machine-readable discovery relations beyond llms.txt and the Agent Card
Advertise what you publish with Link relations so agents stop guessing paths. Add the ones that apply, for example: Link: </llms.txt>; rel="describedby", </.well-known/api-catalog>; rel="api-catalog". Informational in 3.x: this does not affect your score.
/robots.txt exists
11/12 core AI crawlers configured
Add explicit User-agent entries for the missing crawlers with Allow: / for each one.
9 AI crawler(s) explicitly blocked
These crawlers have "Disallow: /" rules. If you want AI agents to access your site, change to "Allow: /" for each blocked crawler.
2 assistant search crawler(s) blocked — your site cannot be cited by those assistants
Search crawlers build the index an assistant cites from; they are separate from the training crawlers. If the intent was to opt out of training only, allow these and block the training tokens instead.
7 training crawler(s) blocked — recorded as a deliberate policy choice
1 robots.txt rule(s) target a retired or non-existent crawler token
These rules have no effect. Remove them so the file reflects your actual policy.
5 AI crawler(s) have partial path restrictions
These crawlers have Disallow rules on specific paths. For full AI access, use only "Allow: /" and let the wildcard User-agent: * handle path restrictions.
Sitemap directive present
No Content-Signal directive found (optional)
Declare how crawlers may use your content after access with the Content Signals Policy, e.g.: Content-Signal: search=yes, ai-train=no. Known signals: search, ai-input, ai-train, plus the optional use=immediate|reference|full. Generate yours at contentsignals.org.
14/57 known AI crawlers have explicit rules
Sitemap located: https://www.ebay.com/lst/AUCTION-0-index.xml
Content-Type is XML (application/xml)
Sitemap-index references 58 child sitemap(s)
0/3 sample child sitemap(s) reachable
Make sure every <loc> URL inside the sitemap-index returns 200 OK and is publicly accessible.
Sample yielded 0 URL(s) across 0 child(ren)
Was kann ein Agent aufrufen?
No agent resource catalog found
A catalog is one document listing everything an agent can call here — agent cards, MCP servers, APIs, skills — so a client stops probing four conventions to find out. Worth publishing once you have more than one of those. Informational: both ai-catalog.json and ard.json are still drafts, so this never affects your score.
No agent-facing surface — an Agent Card does not apply to this site
No API surface — API discovery does not apply to this site
No MCP server — MCP discovery does not apply to this site
No developer-facing surface — skills do not apply to this site
No forms and no WebMCP code — nothing here for an agent to invoke as a tool
No commerce surface — agentic-commerce discovery does not apply to this site
Nothing on this site requires authorization — auth discovery does not apply
Welche Nutzungsrechte sind erklärt?
/.well-known/security.txt not found
Create a /.well-known/security.txt file per RFC 9116. At minimum, include Contact: and Expires: fields. See https://securitytxt.org/ for a generator.
No RSL license discovery found
Declare machine-readable licensing terms for your content with Really Simple Licensing. Add to robots.txt: License: https://your-site.com/license.xml — then publish the RSL document. See https://rslstandard.org.
No machine-readable usage policy declared
State your terms where they can be read without a lawyer. The lowest-effort option is a Content-Signal line in robots.txt: Content-Signal: search=yes, ai-input=yes, ai-train=no. Absence is neutral, not permission — but it also gives you nothing to point at.
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