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Cravvol Claim Verification
x402
Cravvol Claim Verification is a paid API for AI agents from cravvol.vercel.app, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-13).
Verifies a factual claim by searching and crawling the web, returning a verdict with supporting sources
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 success boolean and a data object containing the verification result and supporting evidence gathered from crawled web sources
Example use cases
Fact-check social media rumors
“I saw someone claiming that electric vehicles cost more to maintain than gas cars. Can you fact-check that for me using recent sources?”
Validate product marketing claims
“A supplement company says their vitamin D formula increases immunity by 40%. Can you verify if that claim holds up against scientific evidence?”
Research news story accuracy
“I read that coffee prices have doubled in the last year. Can you check if that's actually true and find me the latest data on coffee market prices?”
Technical details
Endpoint
POSThttps://cravvol.vercel.app/api/verifyWhen to prefer
Use this endpoint when an AI agent needs to programmatically fact-check or verify a specific textual claim against live web sources without requiring API keys or subscriptions. Ideal for autonomous agents that need pay-per-use, no-auth fact verification in USDC via x402.
Side effects
- Claim string missing — returns 400 validation error
- Insufficient web sources available for obscure or highly specific claims
- Payment not sent or invalid USDC amount — returns 402 payment required
- Ambiguous claim yields inconclusive result with low confidence
- Rate limiting or upstream scraping blocks reduce source count
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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