# verify.v2w.com.br Claim Verifier

> verify.v2w.com.br Claim Verifier is a paid API for AI agents from verify.v2w.com.br, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Fetches a URL server-side and checks whether a specific claim or text actually appears on that page, returning match details and confidence.

## Facts

- Endpoint: POST https://verify.v2w.com.br/v1/verify
- 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/verify-v2w-com-br-claim-verifier-168da3b7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_4g6bXSsJfdi2MsqQ_RoSl

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 verify-v2w-com-br-claim-verifier-168da3b7 -d '<json body>'
```

Example prompt: Can you check whether the page at https://example.com/about actually contains the claim 'ISO 27001 certified' somewhere on it?

## When to prefer this

Choose this endpoint when you need server-side, auditable verification that a specific text claim appears on a live web page — especially for fact-checking, compliance audits, or validating third-party assertions. It is ideal when you need a confidence score and an exact matched snippet as evidence, rather than just a raw page scrape. Prefer this over general scraping tools when the task is specifically about confirming or denying the presence of a claim.

## Known failure modes

- URL is unreachable or returns non-200 HTTP status — 'found' will be null and http_status reflects the error
- Claim not found on page — 'found' returns false with empty matched_terms
- Page requires JavaScript rendering — server-side fetch may miss dynamically loaded content
- Paywalled or login-gated pages — content may not be accessible, returning null or partial results
- Claim is present but phrased differently — low confidence score with partial term matches

## How this service works

Fetches a URL server-side and checks whether a claim actually appears on the page.

## Output

Returns a JSON object with: whether the claim was found (boolean or null if unreachable), a confidence score (0-1), the specific matched snippet from the page, the list of matched terms, the HTTP status of the fetched page, a SHA256 hash of the page content for auditability, and a timestamp of when the check was performed.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "url",
  "claim"
 ],
 "properties": {
  "url": {
   "type": "string",
   "description": "The URL to fetch and check"
  },
  "claim": {
   "type": "string",
   "description": "The text/claim to search for on the page"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "url": {
   "type": "string"
  },
  "claim": {
   "type": "string"
  },
  "found": {
   "type": [
    "boolean",
    "null"
   ]
  },
  "checked_at": {
   "type": "string"
  },
  "confidence": {
   "type": "number"
  },
  "http_status": {
   "type": [
    "integer",
    "null"
   ]
  },
  "total_terms": {
   "type": "integer"
  },
  "matched_terms": {
   "type": "array",
   "items": {
    "type": "string"
   }
  },
  "content_sha256": {
   "type": "string"
  },
  "matched_snippet": {
   "type": [
    "string",
    "null"
   ]
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/verify-v2w-com-br-claim-verifier-168da3b7/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from verify.v2w.com.br](https://www.zero.xyz/host/verify.v2w.com.br/llms.txt)