# x402-zadenworks Structured Data & Social Preview Validator

> x402-zadenworks Structured Data & Social Preview Validator 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).

Validates JSON-LD structured data and social preview tags (Open Graph, Twitter Card) on up to 10 URLs, returning a grade, score, and prioritized issue list per page.

## Facts

- Endpoint: POST https://x402-zadenworks.zaden-gaming.workers.dev/structured
- 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-structured-data-social-preview-validator-a3f6a5b2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_A5dGv4hOuQkialNs5Z-MH

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-structured-data-social-preview-validator-a3f6a5b2 -d '<json body>'
```

Example prompt: Check the structured data and social preview tags on these pages — https://example.com/ and https://example.com/about — and tell me what's missing or broken, with a score and grade for each.

## When to prefer this

Choose this endpoint when you specifically need to audit JSON-LD structured data, Open Graph, and Twitter Card tags — it returns a clean grade, score, and worst-first issue list per page in one call, with no API key or account required. Prefer the /audit endpoint if you also want SEO, accessibility, and link checking in a single call. Use /structured when you want only the social/schema layer, minimizing cost and response size.

## Known failure modes

- Invalid or unreachable URL returns an error entry for that URL rather than aborting the whole batch
- More than 10 URLs submitted causes a validation error
- Pages with no HTML (e.g. PDFs, redirects to binary assets) may return empty structured data findings
- Payment failure (insufficient USDC balance) blocks the call entirely with a 402 response
- Rate limiting or bot-blocking on the target site may cause 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

A JSON array with one result object per URL, each containing: a letter grade (e.g. B-), a numeric score 0-100, a severity rating, boolean flags for Open Graph and Twitter Card presence, a list of structured data types found (e.g. Organization, Product), and a prioritized list of issues with descriptions.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "results": [
   {
    "url": "https://example.com/",
    "grade": "B-",
    "score": 80,
    "issues": [
     "No Twitter Card tag found -- X/Twitter will fall back to Open Graph tags or show no preview."
    ],
    "severity": "warning",
    "hasOpenGraph": true,
    "hasTwitterCard": false,
    "structuredDataFound": true,
    "structuredDataTypes": [
     "Organization"
    ]
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-zadenworks-structured-data-social-preview-validator-a3f6a5b2/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)