Can agents find your site and its capabilities?
The site registers callable WebMCP tools with the browser at runtime, so an AI agent can operate the page through them.
Found a parseable Agent Skills index at https://fly.io/.well-known/agent-skills/index.json.
Found a parseable Linkset at https://fly.io/.well-known/api-catalog.
Found https://fly.io/llms.txt.
Found at least one "[name](url)" markdown link.
Found a "> summary" blockquote.
First line is a top-level "# Title" heading.
Crawled 12 of 12 discovered pages beyond the homepage.
If your llms.txt file does not follow recommendations, large language models may not be able to understand how you want your website to be crawled or used for training. The [llms.txt](https://llmstxt.org/) file should be a Markdown file containing at least one H1 header. [Learn more about the llms.txt audit](https://developer.chrome.com/docs/lighthouse/agentic-browsing/llms-txt).
Lighthouse Agentic Browsing audits ran.
Could not identify a known website platform (custom stack or unrecognised).
Can agents understand your content?
Only 12/31 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.
Homepage returns text/markdown when requested.
Homepage server response contains 980 words of visible text — content is reachable without executing JavaScript.
Detected 1 cookie-banner element but none look agent-hostile (small, dismissible, or offer a reject option).
Homepage contains ~489 elements.
22 headings, no level skips.
Language declared as "en-US".
31 of 31 <img> tags have alt attributes.
56 internal links found.
All four landmark elements present (main, header, footer, nav).
Exactly one <h1> on the homepage.
All 12 reachable key pages have both a <title> and <h1>.
All 12 pages return ≥80 words of visible text without JavaScript.
Can agents actually operate the page?
0/1 data-collecting forms expose errors via ARIA attributes.
Fix: Wire inputs to their error containers with `aria-describedby` and toggle `aria-invalid` on validation failure. Agents that can't see styled error text rely on these attributes.
No HTML5 validation hints (pattern / minlength / maxlength / min / max) on any data-collecting form input.
Fix: Publish input constraints via HTML attributes so agents and browsers can validate client-side.
All 10 agent-critical accessibility audits passed — an agent can perceive and operate the page through its accessibility tree.
`[aria-*]` attributes match their roles passed.
`[aria-hidden="true"]` is not present on the document `<body>` passed.
`[aria-hidden="true"]` elements do not contain focusable descendents passed.
`[role]`s have all required `[aria-*]` attributes passed.
`[role]` values are valid passed.
`[aria-*]` attributes are valid and not misspelled passed.
`[aria-*]` attributes have valid values passed.
Buttons have an accessible name passed.
Document has a `<title>` element passed.
Links have a discernible name passed.
Lighthouse accessibility score: 93/100. Agents read the page through its accessibility tree, so this is a proxy for how navigable your site is to an AI agent.
All 1 data-collecting forms set autocomplete on at least one field.
3 of 3 visible interactive form fields have labels.
1/1 data-collecting forms mark required fields.
All audits passed
0
Valid [WebMCP schemas](https://developer.chrome.com/docs/ai/webmcp) are required for AI agents to understand and interact with tools correctly. Please fix any errors or warnings reported by the browser.
0.000 (field data from CrUX, for this page). Good.
707ms (field data from CrUX, for this page). Good.
3 tool(s) registered via the WebMCP browser API (navigator.modelContext).
All 3 registered tool(s) declare a name, description, and an object inputSchema.
1 form missing annotations
Lists the [WebMCP tools](https://developer.chrome.com/docs/ai/webmcp) registered at the time of analysis.
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.
3: get_sprites_quickstart, list_fly_resources, navigate
Can agents safely transact?
No Strict-Transport-Security header on the homepage.
Fix: Add `Strict-Transport-Security: max-age=15768000; includeSubDomains` so browsers and agents refuse to downgrade to http for at least six months.
/.well-known/oauth-authorization-server returned 404.
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 404.
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.
server: Fly/ec1a4f957c (2026-08-31)
Fix: Configure your web server / framework to suppress version strings. They give attackers a free shortlist of known CVEs to try.
CSP header present.
Homepage scheme is https:.
http://fly.io → https://fly.io/ (1 hop).
No stack-trace markers in the first 5KB.
Homepage HTML references no http:// resources.
Referrer-Policy: strict-origin-when-cross-origin.
Valid for 88 more days (Dec 1 23:48:33 2026 GMT, issuer: YE2).
X-Content-Type-Options: nosniff.
CSP frame-ancestors directive present.