{"uid":"cap_roE47E6sQSEV4deQHN60k","slug":"saver-verifier-d82804a1","name":"SAVER Verifier","description":"Paid verification layer for autonomous AI agents. Verify claims before decisions using web evidence and source-backed analysis","url":"https://agent-production-9804.up.railway.app/verify?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"claim":{"type":"string"},"context":{"type":"string"}}},"responseSchema":{"type":"json","example":{"status":"supported","evidence":["Relevant authoritative sources support the claim."],"confidence":0.98,"explanation":"The available evidence supports the claim."}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.2","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","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":"$0.2/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.2","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.2","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_aVXxfIQbaY3qZI_oqyw-q","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.2","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Verifies factual claims by searching the web and returning supporting or refuting evidence with a confidence score","exampleAgentPrompt":"Can you fact-check this claim for me: 'The global average temperature has risen by 1.2 degrees Celsius since pre-industrial times'? Use additional context that this is from a climate report published in 2023.","exampleUseCases":[{"title":"Verify AI-generated content accuracy","prompt":"I need you to verify this AI-generated summary before I send it out: 'The Eiffel Tower was completed in 1889 and stands 330 meters tall.' Can you fact-check that and tell me how confident you are it's correct?"},{"title":"Debunk viral social media claim","prompt":"There's a post going viral saying 'Drinking eight glasses of water a day is scientifically required for good health' — can you verify whether that's actually true and find me some sources?"},{"title":"Validate product marketing statement","prompt":"Our marketing team wants to use the claim 'Electric vehicles produce zero emissions over their lifetime' — can you fact-check that before we publish it, with context that we're referring to total lifecycle emissions?"}],"resultDescription":"A JSON object containing: a 'status' field indicating whether the claim is 'supported', 'refuted', or 'uncertain'; an 'evidence' array of relevant authoritative sources or quotes; a 'confidence' score between 0 and 1 indicating certainty of the verdict; and an 'explanation' summarizing how the evidence relates to the claim.","failureModes":["Claim is too vague or ambiguous for web search to resolve","No credible sources found for niche or highly specific claims","Conflicting evidence leads to uncertain or low-confidence result","Claim involves very recent events not yet indexed by search","Rate limiting or service unavailability returns a non-200 response","Payment not received leads to 402 Payment Required error"],"whenToPreferThis":"Choose SAVER Verifier when you need structured, evidence-backed fact-checking with a confidence score and source citations — particularly for AI-generated content, news claims, or marketing statements that need validation before publication. It is well-suited for single claim verification where both a verdict and supporting evidence are required, rather than bulk document analysis or pure plagiarism checking.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-20T00:40:06.350Z","isFirstParty":false,"canonicalSlug":"saver-verifier-d82804a1"}