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Cravvoul Claim Verifier
x402
Cravvoul Claim Verifier is a paid API for AI agents from cravvoul.vercel.app, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-11).
Verifies a textual claim against web sources, returning a verification result with supporting evidence, paid per-request in USDC via x402.
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 indicating whether the verification completed, and a 'data' object containing the verification outcome and supporting evidence gathered from web sources.
Example use cases
Fact-checking viral social media claims
“I saw a post saying 'Scientists have discovered that drinking coffee daily reduces Alzheimer's risk by 65%' — can you verify that claim against 3 web sources and tell me if it holds up?”
Validating AI-generated content
“I just had an AI write a paragraph saying 'Bitcoin was invented in 2008 by a group called the Cypherpunks' — can you verify that claim is accurate using web sources before I publish it?”
Research assistant for disputed statistics
“My colleague claims that 'Renewable energy now accounts for over 50% of global electricity generation' — can you check that against 4 sources and tell me if it's supported?”
Technical details
Endpoint
POSThttps://cravvoul.vercel.app/api/verify?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need lightweight, pay-per-use claim verification without setting up auth or subscriptions. Ideal for AI agents that need to spot-check facts, validate AI-generated content, or flag misinformation on-demand. It is well-suited for pipelines where fact-checking is occasional rather than high-volume, given the per-request USDC pricing model via x402.
Side effects
- Claim field missing — returns validation error
- Ambiguous or extremely broad claim may return inconclusive results
- Source count set too low (e.g. 1) may yield insufficient evidence
- Network or crawling failure may cause success: false with no data
- Highly niche or obscure claims may find no relevant web sources
- Rate limits or payment failure via x402 will block the request
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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