{"uid":"cap_njXvRICg81YuTGU5h_ut9","slug":"cerwal-claim-verifier-9a454086","name":"Cerwal Claim Verifier","description":"Web scraping and search for AI agents. No auth, no subscriptions. Pay per request in USDC via x402.","url":"https://cerwal.vercel.app/api/verify","method":"POST","headers":{},"bodySchema":{"type":"object","required":["claim"],"properties":{"claim":{"type":"string","description":"Claim to verify"},"sources":{"type":"number","description":"Number of sources"}}},"responseSchema":{"type":"object","properties":{"data":{"type":"object"},"success":{"type":"boolean"}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.05","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.05/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_606Yn5gVCPAEDFo5g592M","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.05","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Verifies a claim against web sources by crawling and searching the web, returning a verification result","exampleAgentPrompt":"Can you verify the claim 'SpaceX launched 10 Starlink missions in 2024' using 5 web sources and tell me if it checks out?","exampleUseCases":[{"title":"Fact-checking a news headline","prompt":"I saw a headline saying 'The US inflation rate dropped below 2% in 2024' — can you verify that claim against 3 web sources and tell me if it's accurate?"},{"title":"Validating a product marketing claim","prompt":"Our competitor says their battery lasts '48 hours on a single charge' — can you verify that claim using 5 sources so I know if it's true before I write a response?"},{"title":"Research assistant for due diligence","prompt":"Can you check whether the claim 'Ethereum gas fees have averaged under $1 since 2024' is supported by real sources? Use at least 4 sources."}],"resultDescription":"Returns a JSON object with a 'success' boolean indicating whether verification succeeded and a 'data' object containing the verification result, likely including source findings, supporting or contradicting evidence, and an overall verdict on the claim.","failureModes":["Claim is too vague or ambiguous for the web to verify","Insufficient web sources found to validate the claim","Network timeout while crawling sources","Invalid or missing 'claim' field returns an error","Sources parameter set too high causing slow or partial response","Payment failure via x402 prevents the request from being processed"],"whenToPreferThis":"Choose this endpoint when you need to fact-check or validate a specific textual claim against live web sources, especially when no authentication setup is desired and pay-per-use USDC micropayments via x402 are acceptable. Prefer it over general search APIs when you specifically need a verdict or verification result rather than raw search results.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T06:35:23.974Z","isFirstParty":false}