{"uid":"cap_B0ALuuijLgqFqIvEl-NPM","slug":"sitecheck-doi-lookup-eec5c9c1","name":"SiteCheck DOI Lookup","description":"A DOI's bibliographic record from Crossref (title, authors, journal, publisher, date, type, citation count, license), or the best matches for a citation-style search (max 10). An unknown DOI answers 404, not charged.","url":"https://api.sitecheck-api.workers.dev/api/doi?utm_source=zero.xyz","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":[],"properties":{"q":{"type":"string","description":"Or a citation-style search"},"doi":{"type":"string","description":"DOI, e.g. 10.1038/nature14539"},"limit":{"type":"string","description":"Matches for q, 1 to 10 (default 5)"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"count":1,"works":[{"doi":"10.1038/nature14539","url":"https://doi.org/10.1038/nature14539","type":"journal-article","title":"Deep learning","authors":["Yann LeCun","Yoshua Bengio"],"journal":"Nature","license":"https://www.springer.com/tdm","citations":78302,"published":"2015-05-27","publisher":"Springer Science and Business Media LLC"}],"source":"Crossref REST API (https://api.crossref.org)","checkedAt":"2026-10-14T04:49:24.968Z"}},"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_PZKy6ia7N2DfP4jCiG1Zz","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Looks up academic paper metadata by DOI or keyword search, returning title, authors, journal, citation count, and publication details via Crossref.","exampleAgentPrompt":"Can you look up the paper with DOI 10.1038/nature14539 and tell me the authors, journal, publication date, and how many times it's been cited?","exampleUseCases":[{"title":"Citation count for a specific paper","prompt":"What's the citation count and full citation info for the paper with DOI 10.1016/j.cell.2017.05.038?"},{"title":"Keyword search for recent papers","prompt":"Search for academic papers about CRISPR gene editing and give me the top 5 results with their DOIs, journals, and citation counts."},{"title":"Verify authorship of a research article","prompt":"I need to confirm the authors and publisher of the paper DOI 10.1126/science.aaa9273 — can you pull that up?"}],"resultDescription":"A JSON object with a list of matched works, each containing the DOI, canonical URL, article type, title, author names, journal, license URL, citation count, publication date, and publisher. Also includes the data source (Crossref) and a timestamp of when the data was fetched.","failureModes":["DOI not found in Crossref — returns empty works array","Invalid DOI format — may return no matches or unexpected results","Search query too broad — returns up to 10 results but may miss the target paper","Rate limiting or upstream Crossref API unavailability — request may fail or return stale data","limit parameter out of range (must be 1–10) — may cause validation error"],"whenToPreferThis":"Use this endpoint when you need to resolve a specific DOI to its full bibliographic metadata, check citation counts, or search for academic papers by keyword via Crossref. Prefer this over general web search when you need structured, reliable scholarly metadata including authors, journal, publisher, and citation count in a single call.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-19T06:44:34.345Z","isFirstParty":false,"canonicalSlug":"sitecheck-doi-lookup-eec5c9c1"}