Academic paper search (OpenAlex) API

Search ~250M academic papers (OpenAlex): titles, authors, year, citation counts, venue, DOI. Sort by relevance, citations, or recency. Answers 'papers on X', 'most-cited research on Y', 'recent work on Z'.

Price$0.01per request

MethodPOST

Route/v1/science/papers

StatusLive

MIME typeapplication/json

Rate limit60/minute

Cache3600s public

sciencepapersresearchacademiccitationsopenalexscholardoi

API URLhttps://x402.hexl.dev/v1/science/papers

Integration docs

Example request

{
  "query": "attention is all you need",
  "sort": "citations",
  "limit": 3
}

Example response

{
  "query": "attention is all you need",
  "total": 1200,
  "papers": [
    {
      "title": "Attention Is All You Need",
      "year": 2017,
      "citations": 120000,
      "authors": [
        "Ashish Vaswani"
      ],
      "doi": "https://doi.org/…"
    }
  ]
}

Input schema

{
  "type": "object",
  "required": [
    "query"
  ],
  "properties": {
    "query": {
      "type": "string"
    },
    "limit": {
      "type": "number",
      "default": 10
    },
    "sort": {
      "type": "string",
      "enum": [
        "relevance",
        "citations",
        "recent"
      ]
    }
  }
}

Output schema

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