{"uid":"cap_XO6Gpif3QeTg7CE3xLZou","slug":"paper-citation-lookup-reference-graph-4514a060","name":"Paper Citation Lookup & Reference Graph","description":"Citation lookup and reference list for a paper. Given a DOI, arXiv id, OpenAlex id, or PMID, returns its references (the works it cites) and its cited-by list (recent works that cite it), plus full metadata and citation count — for bibliography building and citation lookup. Keyless via OpenAlex and Semantic Scholar.","url":"https://api.kadec0.xyz/v1/paper-details","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","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","anyOf":[{"required":["id"]},{"required":["doi"]}],"required":[],"properties":{"id":{"type":"string","description":"arXiv id, DOI, OpenAlex id, or PMID"},"doi":{"type":"string","description":"alias for id (DOI form)"},"ref_limit":{"type":"string","default":"25","description":"max references (0-100)"},"cite_limit":{"type":"string","default":"25","description":"max citing works (0-100)"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.03","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":"$0.03/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.03","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.03","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_0MIVKZizg8fw_CI7jpC0k","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.03","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Given a DOI, arXiv ID, OpenAlex ID, or PMID, returns a paper's full metadata, reference list (works it cites), citing-works list (recent papers that cite it), and citation count.","exampleAgentPrompt":"Can you pull up the full reference list and the papers that cite arXiv:2310.06825, showing up to 50 references and 30 citing works?","exampleUseCases":null,"resultDescription":"Returns the paper's full metadata (title, authors, abstract, publication date, venue), a list of works it cites (up to ref_limit), a list of recent works that cite it (up to cite_limit), and its total citation count — all drawn from OpenAlex and Semantic Scholar without requiring an API key.","failureModes":["Unknown or malformed ID returns 404 or empty result","Paper exists but has no indexed references (e.g. very new or obscure paper)","PMID or OpenAlex ID not resolvable to a known record","ref_limit or cite_limit out of 0-100 range returns validation error","Rate limiting or upstream OpenAlex/Semantic Scholar outage causes 5xx response"],"whenToPreferThis":"Use this endpoint when you need structured citation data — references or citing works — for a specific paper identified by DOI, arXiv ID, OpenAlex ID, or PMID. Prefer it over general web search when you need machine-readable bibliography data, citation counts, or want to traverse a citation graph programmatically. It requires no API key and costs a flat $0.03 per call via x402.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T18:32:56.942Z","isFirstParty":false}