{"uid":"cap_HYfF3jBtv4BaA6UdgdFiF","slug":"whatchuneed-fact-check-api-384807f6","name":"WhatChUNeed Fact Check API","description":"320+ pay-per-call API endpoints across accommodation, LLM, code execution, crypto, medical, finance, and more. One API, one payment. Powered by x402 protocol.","url":"https://whatchuneed.vercel.app/api/verify/factcheck","method":"POST","headers":{},"bodySchema":{"type":"object","required":["input"],"properties":{"input":{"type":"string","description":"Request input"}}},"responseSchema":{"type":"object","properties":{"result":{"type":"object","description":"Response data"},"status":{"type":"string"}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.05","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":"$0.05/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_UoCONoe4qNpRGCab7lZAW","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.05","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Verifies claims and checks factual accuracy of a given text input, returning a structured fact-check result.","exampleAgentPrompt":"Can you fact-check this claim for me: 'The Great Wall of China is visible from space with the naked eye'?","exampleUseCases":[{"title":"Verify viral social media claim","prompt":"Someone shared a post saying 'Humans only use 10% of their brains' — can you fact-check that statement for me?"},{"title":"Validate news article statistic","prompt":"Before I cite this in my report, can you verify the claim that 'Global average temperatures have risen by 2 degrees Celsius since 1850'?"},{"title":"Check historical fact accuracy","prompt":"I want to confirm this before my presentation — fact-check the statement 'The Berlin Wall fell on November 9, 1989' for me."}],"resultDescription":"Returns a structured result object containing the fact-check outcome (e.g., true, false, misleading, unverified) and supporting details, along with a status field indicating whether the request was processed successfully.","failureModes":["Empty or missing 'input' field returns a validation error","Extremely vague or ambiguous claims may return an unverifiable/inconclusive result","Claims in obscure languages or domains may produce low-confidence results","Network timeouts if the backend verification service is slow","$0.05 USDC payment failure if wallet is underfunded"],"whenToPreferThis":"Choose this endpoint when you need a quick, pay-per-call fact verification without managing a subscription or API key setup. Ideal for agents that occasionally need to validate claims inline during workflows, especially when integrated into x402-compatible payment flows. Suitable for low-volume spot-checking rather than bulk verification pipelines.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T00:56:30.202Z","isFirstParty":false}