One-call citation-graph snapshot for a DOI (Crossref + OpenAlex) API

Joins Crossref and OpenAlex into a single snapshot of a paper's position in the literature graph: upstream references, downstream citations, citation trend, FWCI and top-percentile flag, retraction status, funders, and related-work count. Answers 'give me everything about this paper's citation graph in one call', 'is this a high-impact, non-retracted, still-cited paper?'.

Price$0.01per request

MethodPOST

Route/v1/science/scholar-paper-graph

StatusLive

MIME typeapplication/json

Rate limit60/minute

Cache86400s public

sciencescholarcitationsgraphsnapshotcrossrefopenalexretraction

API URLhttps://x402.hexl.dev/v1/science/scholar-paper-graph

Integration docs

Example request

{
  "doi": "10.1038/nature12373"
}

Example response

{
  "doi": "10.1038/nature12373",
  "title": "Nanometre-scale thermometry in a living cell",
  "year": 2013,
  "venue": "Nature",
  "upstreamReferences": 30,
  "downstreamCitations": 1953,
  "citationTrend": "steady",
  "fwci": 54.1687,
  "topPercentile": "top-1%",
  "retractionStatus": "clean",
  "retracted": false,
  "funders": [],
  "relatedWorkCount": 10,
  "openAlexId": "https://openalex.org/W2159974629"
}

Input schema

{
  "type": "object",
  "required": [
    "doi"
  ],
  "properties": {
    "doi": {
      "type": "string"
    }
  }
}

Output schema

{
  "type": "object",
  "additionalProperties": true
}