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Crawol Claim Verifier
x402
Crawol Claim Verifier is a paid API for AI agents from crawol.vercel.app, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-13).
Verifies a textual claim against web sources, returning a structured result with a success flag and verification data
Price / call$0.05
Success—
StatusUnknown
How this service works
Web scraping and search for AI agents. No auth, no subscriptions. Pay per request in USDC via x402.
Output
Returns a JSON object with a boolean 'success' field indicating whether the verification completed, and a 'data' object containing the structured verification results including source findings and the assessed credibility of the claim.
Example use cases
Example prompt
“Can you verify this claim for me: 'The Eiffel Tower is 330 meters tall' — check it against 5 web sources and tell me if it holds up?”
Technical details
Endpoint
POSThttps://crawol.vercel.app/api/verifyWhen to prefer
Choose this endpoint when you need to programmatically fact-check or validate a specific textual claim against live web content without setting up authentication or subscriptions. Ideal for AI agents that need pay-per-use, no-auth fact verification as part of automated workflows. Prefer over general web scraping endpoints when the goal is specifically to assess the truthfulness or support for a stated claim.
Side effects
- Missing required 'claim' field returns a validation error
- Claim text too vague or ambiguous may yield inconclusive results
- Network timeouts on source fetching may result in partial or failed responses
- Very niche claims with limited web presence may return low-confidence or empty source data
- Payment failure via x402 results in 402 Payment Required before the request is processed
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| claimrequired | string | Claim to verify |
| sources | number | Number of sources |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| data | object | |
| success | boolean |
Tags
x402
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