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WCAG Accessibility Checker (Static Analysis)
x402
WCAG Accessibility Checker (Static Analysis) is a paid API for AI agents from api.webbersites.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-10).
Performs static WCAG accessibility analysis on a public URL, mapping findings to A/AA/AAA success criteria across alt text, headings, ARIA, forms, and more
Price / call$0.01
Success—
StatusUnknown
How this service works
WCAG accessibility check (static analysis): findings mapped to WCAG success criteria with A/AA/AAA levels — alt text, page title, lang, form labels, heading structure, table headers, link purpose, accessible names, duplicate IDs, ARIA role validity, zoom blocking, meta refresh, skip links. Filter with ?level=A|AA|AAA. Honestly reports what static analysis cannot check (contrast, focus, keyboard).
Output
Returns a structured report with WCAG findings (each mapped to a specific success criterion and conformance level A/AA/AAA), aggregate totals by level and type, and a list of checks that static analysis cannot perform (e.g. color contrast, keyboard focus behavior). Optionally filtered to a specific WCAG level.
Example use cases
Example prompt
“Can you run a WCAG AA accessibility audit on https://example.com and show me all the findings — things like missing alt text, bad heading structure, unlabeled form fields, and broken ARIA roles?”
Technical details
Endpoint
GEThttps://api.webbersites.com/api/a11y/check?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need WCAG-mapped accessibility findings with explicit success criterion references and conformance level tagging (A/AA/AAA). Prefer this over a generic alt-text-only audit (see sibling /api/a11y/alt) when you need broad coverage across heading structure, form labels, ARIA validity, link purpose, skip links, zoom blocking, and meta refresh. Best for pre-launch compliance checks, accessibility reports, and automated QA pipelines that need structured, standards-referenced output rather than raw heuristic scores.
Side effects
- URL is not publicly accessible or returns non-2xx — analysis cannot be performed
- Invalid or malformed URL provided — request rejected
- Level filter value is not A, AA, or AAA — invalid parameter
- Page has no parseable HTML content — limited or empty findings
- Timeout fetching the target URL — partial or no results
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"url": "https://example.com",
"totals": {
"issues": 9,
"by_level": {
"A": 8,
"AA": 1,
"AAA": 0
},
"criteria_failed": 3
},
"findings": [
{
"name": "Non-text content",
"count": 6,
"level": "A",
"detail": "Images without usable text alternatives.",
"criterion": "1.1.1"
}
],
"not_checked": [
"1.4.3 color contrast (needs rendering)"
]
}
}Tags
x402
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