{"uid":"cap_y8qh44DgLGtWGhp3NAiAj","slug":"shelf-thirdmade-net-search-verify-82029416","name":"shelf.thirdmade.net Search Verify","description":"Checks if a URL supports a claim. Returns confidence score. Research agents use this to verify sources.","url":"https://shelf.thirdmade.net/probe/search-verify","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["url","claim"],"properties":{"url":{"type":"string","description":"Source URL"},"claim":{"type":"string","description":"Claim to verify"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_crpmPHPBNJYB05jp5HcAl","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Checks whether a given URL supports or substantiates a specific claim, returning a confidence score for source verification.","exampleAgentPrompt":"Check whether this URL — https://www.nature.com/articles/s41586-021-03819-2 — actually supports the claim that 'AlphaFold solved the protein folding problem' and give me a confidence score.","exampleUseCases":[{"title":"Research citation validation","prompt":"I'm writing a report and I cited https://www.who.int/news-room/fact-sheets/detail/cancer as evidence that 'cancer is the second leading cause of death globally' — can you verify that URL actually supports that claim and how confident should I be?"},{"title":"Fact-checking news article sources","prompt":"A journalist shared this claim: 'Global EV sales surpassed 10 million in 2022.' They linked to https://www.iea.org/reports/global-ev-outlook-2023 as the source — does that page actually back up that claim?"},{"title":"Automated source credibility scoring for agent pipeline","prompt":"Before I include this in my briefing, check if https://pubmed.ncbi.nlm.nih.gov/33517398/ supports the claim that 'mRNA vaccines produce a strong immune response in older adults' — what's the confidence score?"}],"resultDescription":"Returns a confidence score (likely a numeric value between 0 and 1) indicating how strongly the provided URL's content supports the given claim. May also include supporting context or explanation for the score.","failureModes":["URL is inaccessible, paywalled, or returns non-200 status — verification fails or returns low confidence","Claim is too vague or ambiguous for meaningful scoring","URL content is non-textual (PDF, image) and cannot be parsed for claim matching","Rate limiting or payment failure for the $0.01 USDC per-call fee","Claim language does not semantically align with page content even if conceptually related"],"whenToPreferThis":"Use this endpoint when an AI agent needs to validate whether a specific cited source actually substantiates a claim — ideal for research pipelines, automated fact-checking workflows, citation auditing, or misinformation detection. Prefer this over general web scraping when you specifically need a claim-to-source confidence match rather than raw page content.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T00:42:34.360Z","isFirstParty":false}