Can agents find your site and its capabilities?
The page registers no tools via the WebMCP browser API (navigator.modelContext).
Fix: Expose your actions to AI agents with the WebMCP browser API: register tools via navigator.modelContext.registerTool. Optionally also publish a /.well-known/webmcp.json tool catalog as a discovery signpost.
Crawled 12 of 12 discovered pages beyond the homepage.
Could not identify a known website platform (custom stack or unrecognised).
Can agents understand your content?
Homepage ignored Accept: text/markdown and returned HTML.
Fix: Serve a markdown version of high-value pages when the client asks for text/markdown. AI summarisers, chatbots and IDE agents prefer markdown — fewer tokens, no DOM noise.
Only 0/16 images have width+height — large CLS risk.
Fix: Set width and height on every <img> so the browser reserves space before the image loads. A layout that shifts while loading makes an AI agent mis-click the element it targeted.
12 of 12 pages are missing <title> and/or <h1>: /sitemap_xml/top_search_pages00.xml.gz, /sitemap_xml/top_search_pages01.xml.gz, /sitemap_xml/top_search_pages02.xml.gz, /sitemap_xml/top_search_pages03.xml.gz, /sitemap_xml/top_search_pages04.xml.gz, /sitemap_xml/top_search_pages05.xml.gz, /sitemap_xml/top_search_pages06.xml.gz, /sitemap_xml/top_search_pages07.xml.gz, /sitemap_xml/top_search_pages08.xml.gz, /sitemap_xml/top_search_pages09.xml.gz, /sitemap_xml/top_search_pages10.xml.gz, /sitemap_xml/marketing_landing_pages00.xml.gz.
Fix: Make sure every page sets a unique <title> and exactly one <h1>. The title is how an AI agent confirms it landed on the right page after navigating.
1 of 12 pages return <80 words of visible text — agents without JavaScript see an empty page: /sitemap_xml/marketing_landing_pages00.xml.gz (6w).
Fix: Pre-render or server-render these pages so AI crawlers (which usually don't execute JS) can read them. Frameworks: Next.js Server Components, Nuxt SSR, Astro, or build-time prerendering.
Homepage server response contains 497 words of visible text — content is reachable without executing JavaScript.
Homepage contains ~1265 elements.
4 headings, no level skips.
Language declared as "en".
16 of 16 <img> tags have alt attributes.
56 internal links found.
All four landmark elements present (main, header, footer, nav).
Exactly one <h1> on the homepage.
Can agents actually operate the page?
Lighthouse flagged this audit — agents may be unable to perceive or operate the affected elements.
Fix: Add the ARIA attributes each role requires.
Lighthouse flagged this audit — agents may be unable to perceive or operate the affected elements.
Fix: Fix invalid values on aria-* attributes.
The page registers no tools via the navigator.modelContext browser API, so an AI agent has no structured way to operate it.
Fix: Expose your site’s actions to AI agents with the WebMCP browser API: call navigator.modelContext.registerTool({ name, description, inputSchema, execute }) from your page so an agent can invoke them. Implement it directly, or with a library like the @mcp-b polyfill (https://mcp-b.ai). Spec: https://github.com/webmachinelearning/webmcp.
2 of 13 agent-critical accessibility audits failed (`[role]`s do not have all required `[aria-*]` attributes, `[aria-*]` attributes do not have valid values) — an agent may be unable to identify or operate the affected elements.
Fix: Fix the failing agent-accessibility audits listed below (accessible names on controls, valid ARIA roles/relationships, nothing interactive hidden from the tree).
`[aria-*]` attributes match their roles passed.
Uses ARIA roles only on compatible elements passed.
`[aria-hidden="true"]` is not present on the document `<body>` passed.
`[aria-hidden="true"]` elements do not contain focusable descendents passed.
Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children. passed.
`[role]`s are contained by their required parent element passed.
`[role]` values are valid passed.
`[aria-*]` attributes are valid and not misspelled passed.
Buttons have an accessible name passed.
Document has a `<title>` element passed.
Links have a discernible name passed.
Lighthouse accessibility score: 91/100. Agents read the page through its accessibility tree, so this is a proxy for how navigable your site is to an AI agent.
4 of 4 visible interactive form fields have labels.
0.010 (field data from CrUX) — good.
447ms (field data from CrUX) — good.
No tool catalog was found at /.well-known/webmcp.json (or /.well-known/webmcp). The catalog is a community convention, not part of the WebMCP standard, so this does not affect WebMCP presence.
Fix: Consider also publishing a tool catalog at /.well-known/webmcp.json: a JSON document with a "spec" of "webmcp/0.1" and a "tools" array, where each tool declares a name and a clear description. It is a community convention (optional, not part of the WebMCP standard) that lets crawlers and agents discover your tools without executing JavaScript.
Can agents safely transact?
/.well-known/oauth-authorization-server returned 403.
Fix: Publish /.well-known/oauth-authorization-server so AI agents discovering your OAuth setup can negotiate flows automatically. Required if your site offers an authenticated API.
/.well-known/oauth-protected-resource returned 403.
Fix: Publish /.well-known/oauth-protected-resource so AI agents discovering your OAuth setup can negotiate flows automatically. Required if your site offers an authenticated API.
No Web Bot Auth signature headers — sites can't verify agent identity.
Fix: Web Bot Auth (IETF HTTP Message Signatures over Signature / Signature-Input) lets you cryptographically verify which agent is hitting you. Several CDNs offer turn-key support; otherwise skip until vendor support matures.
No Content-Security-Policy header on the homepage.
Fix: Add a Content-Security-Policy. Even a strict default-src directive cuts XSS blast radius dramatically. Start in report-only mode to find violations.
No Referrer-Policy header on the homepage.
Fix: Add `Referrer-Policy: strict-origin-when-cross-origin` so outbound links don't leak full URLs (including query strings) to third parties.
No `X-Content-Type-Options: nosniff` header.
Fix: Add `X-Content-Type-Options: nosniff` to prevent browsers (and some agents) from re-interpreting your responses as a different content type.
No X-Frame-Options header and no CSP frame-ancestors directive.
Fix: Add `X-Frame-Options: SAMEORIGIN` (or a CSP frame-ancestors directive) to prevent your site being framed by a phishing host.
x-amz-cf-id: 9KpKrG6WJ6ijuQ9DO-SQ8CzGpa4T4ifkMa4l_pdd (AWS CloudFront)
max-age=63072000, includeSubDomains=true, preload=true.
Homepage scheme is https:.
http://eventbrite.com → https://www.eventbrite.com/ (2 hops).
No stack-trace markers in the first 5KB.
Homepage HTML references no http:// resources.
Valid for 159 more days (Dec 27 23:59:59 2026 GMT, issuer: Amazon RSA 2048 M04).
Server / X-Powered-By headers don't leak product version.