{"uid":"cap_yc3SgRaDqqdHTDOTnRswZ","slug":"synthora-crossref-bibliographic-search-5eb24562","name":"SYNTHORA Crossref Bibliographic Search","description":"Free-text search across 150M+ Crossref registered works, returning DOI, title, authors, journal, publication date and citation counts ranked by relevance. Serves autonomous research agents and agent-to-agent literature-discovery and reference-resolution workflows as a keyless scholarly ranking surface. First 3 calls FREE per wallet — send header X-WALLET: 0x<addr>. No charge on upstream failure.","url":"https://crossref-works-search.hergertsynthora.com/service","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"query":{"type":"string","description":"query"}}},"responseSchema":{"type":"json","example":{"ok":true,"niche":"crossref-works-search","result":{}}},"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_bfjMIQSll1mcG1OmGGNQs","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":"Full-text search across 150M+ Crossref-registered scholarly works, returning ranked results with DOI, title, authors, journal, publication date, and citation counts.","exampleAgentPrompt":"Search Crossref for scholarly papers on CRISPR gene editing in cancer treatment and give me the top results with DOI, authors, journal, and citation counts.","exampleUseCases":[{"title":"Literature review for research proposal","prompt":"Find me the most cited academic papers on transformer neural networks in natural language processing — I need the DOIs, authors, journal names, and publication dates so I can build a reference list."},{"title":"Verify and resolve partial citation","prompt":"I have an incomplete reference: something like 'Smith et al., 2019, climate feedback loops' — can you search Crossref to find the full bibliographic details including the DOI?"},{"title":"Discover recent papers on emerging topic","prompt":"Search for scholarly works published about mRNA vaccine mechanisms — return the top results ranked by relevance with titles, authors, and citation counts so I can prioritize what to read."}],"resultDescription":"A ranked list of matching scholarly works from the Crossref registry, each including the DOI, full title, author list, journal or publication venue, publication date, and citation count, returned as a JSON object under the 'result' key.","failureModes":["Empty result set if query is too specific or uses non-standard terminology","Ambiguous or broad queries may return loosely related works","Crossref coverage gaps for non-DOI-registered or pre-2000 literature","Network or upstream Crossref API errors returning non-200 responses","Payment failure (x402 protocol) preventing query execution"],"whenToPreferThis":"Choose this endpoint when an AI agent needs to discover, rank, or resolve scholarly literature by free-text query across a massive cross-publisher corpus without requiring an API key. Ideal for autonomous research agents performing literature reviews, reference resolution, or citation enrichment workflows. Prefer over PubMed-specific endpoints when breadth of coverage across all academic disciplines is needed, and over Google Scholar scrapers when structured bibliographic data (DOI, citation count) is required programmatically.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T18:32:39.753Z","isFirstParty":false}