{"uid":"cap_TUaCf5oa-Hh2MUjBPi01b","slug":"verify-agentutil-net-1b3f47c3","name":"verify.agentutil.net Fact Verification","description":"Fact verification — returns verdict, confidence, current truth","url":"https://verify.agentutil.net/v1/verify","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"claim":{"type":"string","maxLength":500,"description":"Natural language claim to verify"},"category":{"enum":["financial","entity","geo","factcheck"],"type":"string"}}},"responseSchema":null,"example":{"request":{"claim":"The Earth orbits around the Sun","category":"factcheck"},"response":{"cached":false,"service":"https://verify.agentutil.net","verdict":"unknown","discover":"https://verify.agentutil.net/.well-known/agent-service.json","freshness":"none","confidence":0,"request_id":"e88e5873-7f67-4378-84cd-231b67c7d01f","referral_id":"88f10f141085","source_count":0,"current_truth":null,"paid_tier_hint":"This claim requires advanced parsing. Use x402 payment for full verification."}},"exampleRequest":{"claim":"The Earth orbits around the Sun","category":"factcheck"},"tags":["x402"],"displayCostAmount":"0.004","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":"$0.004/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.004","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.004","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_1sXwJTpOxwwIgX6ZHRjmV","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.004","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Verifies a natural language claim and returns a verdict, confidence score, and current ground truth","exampleAgentPrompt":"Can you fact-check this claim for me and tell me how confident you are: 'Apple is currently the most valuable public company in the world' — run it as a financial category check and give me the verdict plus the current truth.","exampleUseCases":null,"resultDescription":"Returns a verdict (true/false/uncertain), a confidence score indicating how certain the system is, and the current ground truth or corrected information relevant to the claim.","failureModes":["Claim exceeds 500-character limit — returns validation error","Invalid or missing category enum value — returns 400 bad request","Claim is ambiguous or unverifiable — may return low-confidence or uncertain verdict","Payment not provided or insufficient — returns 402 Payment Required","Service temporarily unavailable — returns 503"],"whenToPreferThis":"Use this endpoint when an agent needs to programmatically verify a discrete factual claim and receive a structured verdict with confidence, especially for financial, entity, geographic, or general fact-check categories. Prefer this over web-search-based approaches when you need a structured true/false/uncertain output with a confidence score rather than raw search results.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T18:38:29.177Z","isFirstParty":false}