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Web Content Verification API
x402
Web Content Verification API is a paid API for AI agents from nfsbl-159-89-4-32.free.pinggy.net, paid per call via x402, $0.25/call, status unknown (last checked 2026-10-11).
Verifies whether a given URL's page content supports an optional claim, returning cross-references and support assessment
Price / call$0.25
Success—
StatusUnknown
How this service works
Website hosted for free through pinggy.io> <meta name=
Output
Returns the original URL, a 'supported' string indicating whether the page content supports the provided claim, an array of cross-reference objects found on the page, and a receipt object confirming the paid transaction.
Example use cases
Fact-checking a news article
“Check if this URL https://news-site.com/climate-story supports the claim that 'Arctic ice has declined by 40% since 1980' and show me any cross-references found on the page.”
Research source validation
“I found this source https://research-org.org/report — can you verify whether it backs up the statement 'electric vehicles reduce emissions by 50% compared to gas cars'?”
Automated claim corroboration
“For the URL https://company.com/press-release, check whether the page content supports the claim that 'the company achieved carbon neutrality in 2023'.”
Technical details
Endpoint
POSThttps://nfsbl-159-89-4-32.free.pinggy.net/verify?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to programmatically verify whether a web page's content supports a specific claim or assertion, especially in fact-checking, research validation, or automated content corroboration workflows. It is particularly useful when you have a URL and a concrete statement you want to test against that URL's content, and you need structured output including cross-references.
Side effects
- URL is unreachable or returns an error (network failure or bad URL)
- Page content is behind authentication or a paywall, preventing analysis
- Claim is ambiguous and results in an indeterminate 'supported' assessment
- Rate limiting or service unavailability at the pinggy.io-hosted endpoint
- Empty or malformed response if the page has no parseable text content
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| urlrequired | string | |
| claim | string | optional claim to test against page content |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| urlrequired | string | |
| receipt | object | |
| supported | string | |
| crossReferences | array |
Tags
x402
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