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ScrapFly Claim Verification API
x402
ScrapFly Claim Verification API is a paid API for AI agents from scrapfly.vercel.app, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-24).
Verifies a factual claim by checking it against multiple sources and returning a truth assessment
Price / call$0.05
Success—
StatusUnknown
How this service works
69 endpoints for data, content generation, and web scraping. Pay per request via x402 on Base chain.
Output
Returns a JSON object with a 'success' boolean indicating whether the verification completed, plus a 'data' object containing the verdict on the claim and supporting evidence from the checked sources.
Example use cases
Fact-checking a news headline
“I just read that 'COVID-19 vaccines cause more deaths than the disease itself' — can you verify whether that claim is actually true, checking against at least 3 sources?”
Validating a product marketing claim
“Our competitor is advertising that their battery lasts 30% longer than ours. Can you verify the claim '30% longer battery life than competing brands' and see if it holds up?”
Debunking a viral social media post
“This viral post says 'Drinking bleach in small doses cures cancer' — please check this claim against 5 sources and tell me if it's true or false.”
Technical details
Endpoint
POSThttps://scrapfly.vercel.app/api/crawl/verify?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need automated, multi-source fact-checking of a specific textual claim — especially for misinformation detection, content moderation, or journalistic verification workflows. Prefer this over general web search when you need a structured true/false verdict with supporting evidence rather than raw search results.
Side effects
- Claim text is empty or too vague to verify — returns success: false
- Sources count is set to 0 or negative — may return error or unreliable result
- Claim relates to very recent events not indexed by sources — limited evidence returned
- Network timeout when fetching sources — success: false with error detail
- Ambiguous or double-barreled claims may produce inconclusive results
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| claimrequired | string | claim |
| sources | number | sources |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| data | object | |
| successrequired | boolean |
Tags
x402
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