Api Endpoint

Academic Papers with Retraction and Citation Analysis

Academic literature from Crossref, the DOI registry itself. Search by topic, author or exact DOI and get normalised records with citation counts, journal, publisher, authors with affiliations, and an open-access flag, plus a cohort view: median citations, most-cited work and the year range. Filter by minimum citations, publication year or open access only.

Open interactive test console

Offering

Provider: x402-filings.datalayer.workers.dev
Method: GET
Offering type: Api Endpoint
Transport type: http
Category: Other
Delivery: Not provided
Pricing model: Not provided
x402 version: 2

Endpoint context

URL: https://x402-filings.datalayer.workers.dev/v1/research/papers
MIME type: application/json
First seen: 2026-10-26T21:53:37.228Z
Last seen: 2026-11-05T00:51:21.315Z
Tags: Research, academic, papers, citations, crossref, doi, Science

Website

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1: 0.01 USDC
Atomic price: 10000 · Network: eip155:8453 · Asset: USDC · Scheme: exact

Raw x402 terms

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "10000",
    "payTo": "0x917e635b83F0dd7e8172c55EC4EEbb28B734cA85"
  }
]

Observed health

Status: Healthy
Latest latency: 50 ms
Average latency: 733 ms
HTTP status: 402
Last checked: 2026-11-05T00:51:21.310Z
Reachability: 100% over 5 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string",
      "const": "http"
    },
    "method": {
      "type": "string",
      "enum": [
        "GET"
      ]
    },
    "queryParams": {
      "type": "object",
      "properties": {
        "q": {
          "type": "string",
          "description": "Search across title and abstract.",
          "examples": [
            "CRISPR"
          ]
        },
        "author": {
          "type": "string",
          "description": "Author name search.",
          "examples": [
            "Doudna"
          ]
        },
        "doi": {
          "type": "string",
          "description": "Exact DOI lookup. Returns that single work.",
          "examples": [
            "10.1126/science.1225829"
          ]
        },
        "fromYear": {
          "type": "integer",
          "description": "Only works published in or after this year.",
          "examples": [
            2020
          ]
        },
        "minCitations": {
          "type": "integer",
          "description": "Minimum citation count.",
          "examples": [
            0
          ]
        },
        "openAccessOnly": {
          "type": "boolean",
          "description": "Only openly-licensed works.",
          "examples": [
            false
          ]
        },
        "limit": {
          "type": "integer",
          "description": "Max works, 1-100. Default 25.",
          "examples": [
            25
          ]
        }
      }
    }
  },
  "required": [
    "type",
    "method"
  ],
  "additionalProperties": false
}

Output schema

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