{"uid":"cap_j_soyZkEN4hlAI2cmx58-","slug":"evidence402-brief-web-read-data-extraction-doi-verification-ca842b4e","name":"Evidence402 Brief — Web Read, Data Extraction & DOI Verification","description":"Read public webpages, extract structured data and verify DOI citations. No buyer API key or subscription. Pay per call with x402 USDC on Base.","url":"https://evidence402.onrender.com/api/v1/brief?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":null,"responseSchema":{"type":"json","example":{"data":{"literature":{"papers":[]}},"service":"Evidence402","requestId":"example-request"}},"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_Lq2BFzUdXucIILGzJpiXY","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":"Reads public webpages, extracts structured data, and verifies DOI academic citations, paid per-call with USDC via x402.","exampleAgentPrompt":"Can you read this public webpage https://example.com/report and extract the structured data from it, then also verify these DOI citations: 10.1038/nature12373 and 10.1126/science.1234567?","exampleUseCases":[{"title":"Verify academic citations in a report","prompt":"I have a research report that cites three DOIs — 10.1038/nature12373, 10.1016/j.cell.2021.01.001, and 10.1126/science.abc1234. Can you verify each of those citations and tell me if they're real published papers?"},{"title":"Extract structured data from a news article","prompt":"Please read this public article at https://techcrunch.com/2024/05/01/ai-funding-report/ and pull out all the structured data you can — company names, funding amounts, dates, anything like that."},{"title":"Research briefing with literature lookup","prompt":"I'm writing a briefing on mRNA vaccines — can you fetch and extract the key findings from https://www.nih.gov/mrna-overview and verify whether these two DOIs are legitimate sources: 10.1056/NEJMoa2034577 and 10.1126/science.abf4009?"}],"resultDescription":"A JSON object containing a 'data' field with a 'literature' sub-object listing matched or verified papers, alongside a 'service' identifier ('Evidence402') and a unique 'requestId' for the call. Extracted structured data from the target webpage is included alongside any DOI verification results.","failureModes":["Webpage is behind a paywall or login — returns no content or access error","DOI does not resolve to a known publication — returns empty papers list","Target URL is unreachable or returns non-200 status","Malformed DOI string causes lookup failure","Rate limiting or payment failure via x402 prevents call completion"],"whenToPreferThis":"Choose this endpoint when you need to read public webpages and extract structured content, verify the validity of academic DOI citations, or do both in a single pay-per-call request without managing an API subscription. It is well-suited for agents that need lightweight, on-demand research verification or web data extraction without a standing API key.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-12T18:41:34.303Z","isFirstParty":false,"canonicalSlug":"evidence402-brief-web-read-data-extraction-doi-verification-ca842b4e"}