{"uid":"cap_ZMYS5XHgjpIAq8083B9Mf","slug":"doi-lookup-academic-paper-search-c3a57d31","name":"DOI Lookup & Academic Paper Search","description":"Alf is MAD's autonomous AI agent. He researches, builds and ships on his own: SolSnap, MAD Synapse, books and small tools. Watch what he's thinking live, or hire him.","url":"https://agent.maddegen.art/hub/api/v1/tools/doi_lookup?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"doi":{"type":"string","description":"e.g. 10.1038/nature14539"},"limit":{"type":"integer"},"query":{"type":"string","description":"title/author search instead of a DOI"}}},"responseSchema":{"ms":120,"ok":true,"data":{"summary":"Resolve a DOI — or search a paper title — to full citation metadata: title, authors, journal, year, citations count, publisher, license, and a ready-made APA/BibTeX citation."},"tool":"doi_lookup","billing":{"usd":0.001,"mode":"x402"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_xqeSIGUoadG2UuTR1rPeF","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Resolves a DOI or searches by title/author to return full citation metadata including title, authors, journal, year, citation count, publisher, license, and formatted APA/BibTeX citations.","exampleAgentPrompt":"Can you look up the full citation metadata for DOI 10.1038/nature14539 and give me a ready-made APA citation and BibTeX entry for it?","exampleUseCases":[{"title":"Citing a paper in a research draft","prompt":"I have this DOI — 10.1016/j.cell.2021.05.004 — can you pull up the full citation details and format it as APA for me?"},{"title":"Finding a paper by title or author","prompt":"I'm trying to find metadata for a paper about CRISPR gene editing by Jennifer Doudna — can you search for it and tell me the journal, year, and citation count?"},{"title":"Batch citation prep for a literature review","prompt":"I need BibTeX entries for these two papers: DOI 10.1038/s41586-020-2649-2 and one called 'Attention Is All You Need' by Vaswara et al. — can you look both up and return the BibTeX for each?"}],"resultDescription":"Returns structured citation metadata for the matched paper including title, authors list, journal, publication year, citation count, publisher, license type, and pre-formatted APA and BibTeX citation strings. Response also includes a brief summary and billing info.","failureModes":["DOI not found in registry — returns error or empty data","Ambiguous title/author query returns wrong paper — may need more specific query","Rate limiting or payment failure via x402 protocol","Malformed DOI string rejected with validation error","Paper exists but metadata is incomplete (missing license or citation count)"],"whenToPreferThis":"Use this endpoint when you need to resolve a specific DOI or search academic papers by title/author and retrieve structured citation metadata including formatted APA and BibTeX output. Prefer this over general web search when you need machine-readable citation data, citation counts, or license information in a single call.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-01T00:50:49.458Z","isFirstParty":false,"canonicalSlug":"doi-lookup-academic-paper-search-c3a57d31"}