# x402-zadenworks WCAG Accessibility Checker

> x402-zadenworks WCAG Accessibility Checker is a paid API for AI agents from x402-zadenworks.zaden-gaming.workers.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Scans one or more web pages for WCAG accessibility issues, returning a scored report with prioritized findings including missing alt text, missing form labels, duplicate IDs, and lang attribute presence.

## Facts

- Endpoint: POST https://x402-zadenworks.zaden-gaming.workers.dev/a11y
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-zadenworks-wcag-accessibility-checker-4b096dd5
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_fTZ-GDAzTbkoghNvhDloW

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability x402-zadenworks-wcag-accessibility-checker-4b096dd5 -d '<json body>'
```

Example prompt: Can you run a WCAG accessibility audit on https://example.com and tell me the score, letter grade, and what issues I need to fix first?

## When to prefer this

Choose this endpoint when you need a quick, scored WCAG accessibility snapshot of up to 10 pages without setting up an account or API key. It is ideal for automated pre-deployment checks, CI pipelines, or agent-driven audits where micropayment billing per call (0.01 USDC) is acceptable. Prefer the parent /audit endpoint if you also want SEO, broken links, and sitemap checks in one call.

## Known failure modes

- Invalid or unreachable URL returns an error for that entry
- Exceeding 10 URLs in a single request may be rejected
- Dynamic/JS-rendered content may not be fully evaluated (ARIA runtime state explicitly excluded)
- Payment failure (insufficient USDC) blocks the request
- Timeout on slow-loading pages may produce incomplete results

## How this service works

Fourteen pay-per-call web tools for AI agents, billed in USDC on Base with no account or API key. START WITH /audit -- one call returns a complete page health check (SEO + structured data + accessibility, optionally plus links and sitemap) with a single score and one worst-first findings list. The parts are also sold individually. SITE AUDIT: /seo (on-page SEO and meta tags), /links (broken links), /sitemap (robots.txt and XML sitemap crawlability), /structured (JSON-LD and social preview tags), /a11y (WCAG accessibility) -- each scored 0-100 with a prioritised issue list. READING: /read (clean markdown), /snap (screenshot, PDF or rendered HTML), /tables (every HTML table as structured JSON), /verify (does a claim actually appear on this page). MONITORING: /watch (has this page changed), /compare (what differs between two pages). Plus /rank (best x402 service for a task) and /batch (several operations behind one payment).

## Output

Returns a JSON array of per-URL results, each containing: a letter grade (e.g. B-), a numeric score 0-100, a list of prioritized accessibility issues with severity, counts for images missing alt text, form fields missing labels, and duplicate IDs, a boolean for lang attribute presence, and a list of checks not performed (e.g. colour contrast, keyboard traps, ARIA runtime state).

## Request schema (JSON Schema)

```json
{
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "type": "object",
 "properties": {
  "input": {
   "type": "object",
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "type": "string",
     "enum": [
      "POST"
     ]
    },
    "bodyType": {
     "type": "string",
     "enum": [
      "json",
      "form-data",
      "text"
     ]
    },
    "body": {
     "type": "object",
     "properties": {
      "urls": {
       "type": "array",
       "items": {
        "type": "string"
       },
       "description": "Pages to scan (max 10)"
      }
     },
     "required": [
      "urls"
     ]
    }
   },
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   },
   "required": [
    "type"
   ]
  }
 },
 "required": [
  "input"
 ]
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "results": [
   {
    "url": "https://example.com/",
    "grade": "B-",
    "score": 80,
    "issues": [
     "2 of 4 image(s) are missing an \"alt\" attribute."
    ],
    "severity": "critical",
    "notChecked": [
     "colour contrast",
     "focus order",
     "keyboard traps",
     "ARIA state at runtime"
    ],
    "imagesTotal": 4,
    "duplicateIdCount": 0,
    "hasLangAttribute": true,
    "imagesMissingAlt": 2,
    "formFieldsMissingLabel": 0
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-zadenworks-wcag-accessibility-checker-4b096dd5/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-zadenworks.zaden-gaming.workers.dev](https://www.zero.xyz/host/x402-zadenworks.zaden-gaming.workers.dev/llms.txt)