# Web Content Verification Endpoint

> Web Content Verification Endpoint is a paid API for AI agents from btolb-159-89-4-32.free.pinggy.net, paid per call via x402, $0.25/call, status unknown (last checked 2026-10-12).

Verifies a URL's page content and optionally checks a specific claim against that content, returning cross-references and support status

## Facts

- Endpoint: POST https://btolb-159-89-4-32.free.pinggy.net/verify?utm_source=zero.xyz
- Price: $0.25/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/web-content-verification-endpoint-ef31dedd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_XTxuGDFyG1w15GxTQ4PaD

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 web-content-verification-endpoint-ef31dedd -d '<json body>'
```

Example prompt: Can you verify whether the page at https://example.com/article actually supports the claim that 'electric vehicles reduce emissions by 50%'?

## When to prefer this

Choose this endpoint when you need to verify whether a specific URL's content actually supports a stated claim or assertion, especially for fact-checking, citation auditing, or content validation workflows. It is distinct from general web scraping because it returns a structured 'supported' verdict and cross-references rather than raw content. Prefer it over manual review when you need a programmatic, auditable verification receipt.

## Known failure modes

- URL is unreachable or returns a non-200 HTTP status — verification cannot proceed
- Page content is behind a login or paywall — claim cannot be validated
- Claim field is ambiguous or too broad — 'supported' result may be inconclusive
- URL points to non-text content (e.g. PDF, video) — parsing may fail
- Pinggy.io free hosting may cause intermittent downtime or connection timeouts
- Rate limiting or payment failure at $0.25 per call may interrupt batch usage

## How this service works

Website hosted for free through pinggy.io&gt;
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## Output

Returns an object containing the verified URL, a receipt object (likely a payment or verification receipt), a 'supported' string indicating whether the page content supports the given claim, and an array of cross-reference objects linking related evidence or sources.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "url"
 ],
 "properties": {
  "url": {
   "type": "string"
  },
  "claim": {
   "type": "string",
   "description": "optional claim to test against page content"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "url"
 ],
 "properties": {
  "url": {
   "type": "string"
  },
  "receipt": {
   "type": "object"
  },
  "supported": {
   "type": "string"
  },
  "crossReferences": {
   "type": "array",
   "items": {
    "type": "object"
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/web-content-verification-endpoint-ef31dedd/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from btolb-159-89-4-32.free.pinggy.net](https://www.zero.xyz/host/btolb-159-89-4-32.free.pinggy.net/llms.txt)