{"uid":"cap_tM57GiSUzRa3Ia_77nn9b","slug":"synthora-crossref-doi-metadata-resolver-cbde7b4f","name":"SYNTHORA Crossref DOI Metadata Resolver","description":"Returns authoritative Crossref registration metadata for any DOI: title, authors, container journal, ISSN, publisher, reference list, funder and license info as structured JSON. A core keyless enrichment endpoint for autonomous research agents and agent-to-agent citation-verification and bibliographic pipelines. First 3 calls FREE per wallet — send header X-WALLET: 0x<addr>. No charge on upstream failure.","url":"https://crossref-work-by-doi.hergertsynthora.com/service","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"doi":{"type":"string","description":"doi"}}},"responseSchema":{"type":"json","example":{"ok":true,"niche":"crossref-work-by-doi","result":{"doi":"10.1038/nature12373","url":"https://doi.org/10.1038/nature12373","type":"journal-article","title":"Nanometre-scale thermometry in a living cell","authors":["G. Kucsko","P. C. Maurer","N. Y. Yao","M. Kubo","H. J. Noh","P. K. Lo","H. Park","M. D. Lukin"],"journal":"Nature","abstract":null,"publisher":"Springer Science and Business Media LLC","published_date":"2013-08"},"provenance":{"url":"https://api.crossref.org/works","source":"Crossref DOI Metadata Resolver"}}},"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_DqplykWgKbYmR_HUrAXFs","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":"Resolves a DOI to its full Crossref registration metadata, returning title, authors, journal, publisher, funder, license, and reference list as structured JSON.","exampleAgentPrompt":"Can you look up the full metadata for the DOI 10.1038/nature12373 — I need the title, authors, journal, publisher, and publication date from Crossref?","exampleUseCases":[{"title":"Citation verification in research pipeline","prompt":"I have this DOI from a paper's reference list — 10.1016/j.cell.2022.01.001 — can you pull the full Crossref metadata so I can verify the citation is accurate, including the authors, journal, and publication date?"},{"title":"Bibliographic enrichment for literature review","prompt":"I'm compiling a bibliography and I have a list of DOIs. Start with 10.1126/science.1240057 — can you fetch the title, authors, journal, and publisher from Crossref so I can format it properly?"},{"title":"Funder and license discovery for open access","prompt":"Can you look up the DOI 10.1371/journal.pbio.3000107 on Crossref and tell me who funded the research and what license the article is published under?"}],"resultDescription":"A JSON object containing: the DOI, canonical URL, document type (e.g. journal-article), title, list of author names, journal/container name, abstract (if available), publisher name, publication date, and provenance indicating the data came from the Crossref API. The response wraps results under an 'ok' flag and a 'result' object.","failureModes":["DOI not registered with Crossref — returns not-found or empty result","Malformed DOI string — may fail to resolve or return an error","Abstract not available — abstract field returns null for many records","Reference list not populated — not all Crossref records include references","Network or upstream Crossref API timeout — service may return an error","ISSN or funder data missing for older or incomplete records"],"whenToPreferThis":"Use this endpoint when you need authoritative bibliographic metadata for a specific DOI sourced directly from Crossref, the canonical DOI registration authority for scholarly publishing. Prefer it over web-scraping or publisher-specific APIs when you need structured, normalized data (authors, journal, funder, license) that works across publishers. Ideal for agent-driven citation verification, bibliographic pipeline enrichment, and reference list resolution where reliability and structured JSON output matter more than full-text access.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T18:33:29.467Z","isFirstParty":false}