{"uid":"cap_03Zkgtv_54dLrM_BQjjLp","slug":"research-paper-citation-verifier-c989f2d0","name":"Research Paper Citation Verifier","description":"Verify a citation: does the DOI exist, does its real title match the claimed title, and has it been retracted?","url":"https://research-papers.x402tookit.com/citation-verify?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":["doi"],"properties":{"doi":{"type":"string","description":"The DOI being cited"},"year":{"type":"integer","description":"The year claimed"},"title":{"type":"string","description":"The title claimed for it (to check for mismatch)"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"doi":{"type":["null","string"]},"asOf":{"type":["null","string"]},"source":{"type":["null","string"]},"journal":{"type":["null","string"]},"reasons":{"type":["array","null"],"items":{"type":"string"}},"summary":{"type":["null","string"]},"verdict":{"type":["null","string"]},"degraded":{"type":["boolean","null"]},"sourceUrl":{"type":["null","string"]},"disclaimer":{"type":["null","string"]},"notChecked":{"type":["array","null"],"items":{"type":"string"}},"thresholds":{"type":["null","object"],"properties":{"mismatchBelow":{"type":["null","number"]}}},"firstAuthor":{"type":["null","string"]},"claimedTitle":{"type":["null","string"]},"registeredYear":{"type":["null","number"]},"yearConsistent":{"type":["boolean","null"]},"registeredTitle":{"type":["null","string"]},"titleSimilarity":{"type":["null","number"]},"retractionStatus":{"type":["null","string"]}}}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","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":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_YBRreiaYzbWSkD3pJH7Vq","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Verifies a cited DOI exists, checks whether its registered title matches the claimed title, and reports retraction status","exampleAgentPrompt":"Can you verify this citation for me — DOI 10.1038/nature12373, claimed title 'CRISPR-Cas9 for genome editing', published in 2013? I want to know if the DOI is real, whether the title matches, and if the paper has ever been retracted.","exampleUseCases":[{"title":"Fact-checking a bibliography entry","prompt":"I'm reviewing a paper and want to verify this citation: DOI 10.1016/j.cell.2014.09.015, claimed title 'Induction of pluripotent stem cells from mouse embryonic fibroblasts', year 2014 — does the DOI exist, does the title match, and has it been retracted?"},{"title":"Detecting retracted sources in a report","prompt":"Check whether DOI 10.1126/science.1255336 has been retracted or corrected, and confirm its registered title matches 'Observation of the BICEP2 Keck Array' for the year 2014."},{"title":"Academic integrity check before submission","prompt":"Before I submit my literature review, can you validate this reference — DOI 10.1001/jama.2020.1585, year 2020, claimed title 'Hydroxychloroquine and Azithromycin as a Treatment of COVID-19' — and tell me if the title is off or if the paper has any retraction notices?"}],"resultDescription":"Returns a structured verdict with: whether the DOI exists, the registered title vs. claimed title and their similarity score, year consistency, retraction status (from Crossref and Retraction Watch), first author, journal name, a plain-language summary, a list of reasons behind the verdict, and metadata about which checks were performed or skipped.","failureModes":["DOI not found in Crossref — returns null metadata and degraded verdict","Title parameter omitted — title match check skipped, noted in notChecked array","Network timeout reaching Crossref or Retraction Watch — degraded flag set to true","Invalid DOI format — may return empty or error response","Retraction Watch unavailable — retraction check skipped with degraded notice"],"whenToPreferThis":"Use this endpoint when you need to verify the integrity of a specific academic citation — confirming the DOI resolves, the title is accurately cited, and the paper hasn't been retracted. Prefer this over a general DOI metadata lookup when citation accuracy and retraction status are both required in a single call. It is the right choice for automated bibliography auditing, academic integrity workflows, or fact-checking pipelines where suspicious citations need multi-dimensional validation.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-31T00:34:47.941Z","isFirstParty":false,"canonicalSlug":"research-paper-citation-verifier-c989f2d0"}