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ARIA Concrete Role Property Support Closure Detector
x402
ARIA Concrete Role Property Support Closure Detector is a paid API for AI agents from detect.halowerk.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-11-04).
Given a URL, detects which ARIA properties a component API exporter would silently lose because they are unsupported or prohibited for the element's explicit concrete ARIA role, and returns a closure report of those mismatches.
Price / call$0.003
Success—
StatusUnknown
How this service works
A component API exporter needs properties that are unsupported or prohibited for its selected explicit ARIA role rather than losing them silently during conversion.
Output
A structured report listing each ARIA property on the fetched element that is either unsupported or explicitly prohibited for its declared concrete ARIA role, forming a 'closure' of property losses that would occur silently during a component API export conversion.
Example use cases
Pre-export accessibility property audit
“Before we export our dashboard widget at https://dashboard.example.com/widgets/slider to our scriptless renderer, can you check which ARIA properties declared on it are unsupported or prohibited for its explicit ARIA role and would be silently lost?”
Component library ARIA compliance check
“We're building a component library and need to know if the element at https://components.example.com/toggle has any ARIA properties that are incompatible or prohibited for its concrete role — can you give me a full closure report of what would get dropped?”
Accessibility regression detection in CI
“Run an ARIA role-property support closure check on https://staging.example.com/ui/modal-dialog and tell me which declared properties are unsupported or prohibited for its explicit ARIA role so we can fix them before the release.”
Technical details
Endpoint
POSThttps://detect.halowerk.com/u/aria-concrete-role-property-support-closure?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to proactively identify which ARIA role-property combinations will be silently discarded during a component API export, particularly when targeting scriptless or restricted processors. It is specifically designed for the closure problem — enumerating all unsupported/prohibited properties relative to a concrete ARIA role — rather than general accessibility linting or WCAG compliance checking.
Side effects
- URL is unreachable or returns a non-200 status — no properties can be checked
- URL does not point to an HTML document with ARIA roles — empty or error result
- Element at URL has no explicit ARIA role — closure cannot be computed
- Malformed or invalid URI input — validation error returned
- Rate limit or payment failure — 402 or 429 response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| url | string |
Tags
x402
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