{"uid":"cap_yTRmfKH0Tvh6hDwpEK7Zr","slug":"academic-paper-metadata-resolver-payai-agentstools-dev-6bd8c6c4","name":"Academic Paper Metadata Resolver (payai.agentstools.dev)","description":"Resolve one research paper and fuse its metadata across OpenAlex, Crossref, Unpaywall and Semantic Scholar into a single cited JSON. Give a doi, arxiv, pmid, pmcid, openalex_id or title and get canonical metadata, authors with ORCID and affiliations, venue, citation counts, an open-access PDF link and a full id crosswalk.","url":"https://payai.agentstools.dev/scholar/paper?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","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","required":[],"properties":{"id":{"type":"string","description":"Any single identifier; its type is auto-detected"},"doi":{"type":"string","description":"DOI, with or without a doi.org prefix"},"pmid":{"type":"string","description":"PubMed id (digits)"},"arxiv":{"type":"string","description":"arXiv id such as 2401.01234"},"pmcid":{"type":"string","description":"PubMed Central id such as PMC1234567"},"title":{"type":"string","description":"Paper title to resolve by search"},"openalex_id":{"type":"string","description":"OpenAlex work id such as W2741809807"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"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":{"p10Cents":"2.0000","medianCents":"2.0000","p90Cents":"2.0000","minCents":"2.0000","maxCents":"2.0000","p95Cents":"2.0000","sampleCount":1,"varies":false,"failureChargeRate":1},"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_SgrQct8kLI8JUQVnN7qzf","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":"Resolves a research paper by any identifier (DOI, arXiv, PMID, PMCID, OpenAlex ID, or title) and returns fused canonical metadata from OpenAlex, Crossref, Unpaywall, and Semantic Scholar in a single JSON response.","exampleAgentPrompt":"Can you pull the full metadata for the paper with DOI 10.1038/s41586-021-03819-2 — I need the authors with their ORCIDs and affiliations, citation count, venue, and an open-access PDF link if one exists.","exampleUseCases":null,"resultDescription":"A single JSON object containing canonical paper metadata fused from OpenAlex, Crossref, Unpaywall, and Semantic Scholar: title, authors with ORCID and institutional affiliations, publication venue, year, citation count, open-access PDF URL, and a full identifier crosswalk mapping DOI, arXiv ID, PMID, PMCID, OpenAlex ID, and Semantic Scholar ID.","failureModes":["Paper not found by any source — returns empty or 404-like response if identifier is unrecognized","Title search ambiguity — fuzzy title matching may return wrong paper if title is common or partial","Partial metadata — some fields (e.g. ORCID, PDF link) may be null if upstream sources lack coverage","Invalid identifier format — malformed DOI or arXiv ID results in a bad request error","No open-access PDF — Unpaywall may confirm paper exists but return null for PDF URL"],"whenToPreferThis":"Use this endpoint when you need a single authoritative, source-fused metadata record for a known academic paper and want to avoid making separate API calls to OpenAlex, Crossref, Unpaywall, and Semantic Scholar. Ideal when you need author ORCID/affiliation data, citation counts, open-access PDF links, and cross-database ID mapping all in one call. Prefer over the sibling open-access-only endpoint when you need full bibliographic metadata beyond just the PDF link.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-11T00:46:57.223Z","isFirstParty":false,"canonicalSlug":"academic-paper-metadata-resolver-payai-agentstools-dev-6bd8c6c4"}