Index onlineMerchant portal
Api Endpoint

scholar-citations

Citation graph of a paper: the works it references (outgoing) and the works that cite it (incoming), each as normalized records, plus the Semantic Scholar influential-citation count. Give a doi, arxiv, pmid, openalex_id or title. Ideal for literature review and prior-art mapping.

Open interactive test console

Offering

Provider
payai.agentstools.dev
Method
GET
Offering type
Api Endpoint
Transport type
http
Category
Science And Education
Delivery
Not provided
Pricing model
Not provided
x402 version
2

Endpoint context

URL
https://payai.agentstools.dev/scholar/citations
MIME type
application/json
First seen
2026-10-16T02:01:31.612Z
Last seen
Tags
scholar, Research, citations, references, citation-graph, prior-art, lit-review, openalex, semantic-scholar, bibliometrics

Website

Payment pricing

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

Payment option 1
0.02 USDC
Atomic price: 20000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Payment option 2
0.02 USDC
Atomic price: 20000 · Network: solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · Asset: USDC · Scheme: exact
Raw x402 terms
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    "amount": "20000",
    "payTo": "0xF22e558a00D91Ee12A1F50C52186FecB8dDFf493"
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "20000",
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]

Observed health

Status
Healthy
Latest latency
406 ms
Average latency
554 ms
HTTP status
402
Last checked
Reachability
100% over 11 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",
        "HEAD",
        "DELETE"
      ]
    },
    "queryParams": {
      "type": "object",
      "properties": {
        "doi": {
          "type": "string",
          "description": "DOI, with or without a doi.org prefix"
        },
        "arxiv": {
          "type": "string",
          "description": "arXiv id such as 2401.01234"
        },
        "pmid": {
          "type": "string",
          "description": "PubMed id (digits)"
        },
        "pmcid": {
          "type": "string",
          "description": "PubMed Central id such as PMC1234567"
        },
        "openalex_id": {
          "type": "string",
          "description": "OpenAlex work id such as W2741809807"
        },
        "title": {
          "type": "string",
          "description": "Paper title to resolve by search"
        },
        "id": {
          "type": "string",
          "description": "Any single identifier; its type is auto-detected"
        },
        "limit": {
          "type": "integer",
          "minimum": 1,
          "maximum": 50,
          "description": "Max items to return, default 10"
        }
      },
      "required": []
    }
  },
  "required": [
    "type",
    "method"
  ],
  "additionalProperties": false
}

Output schema

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "input"
  ],
  "properties": {
    "input": {
      "type": "object",
      "required": [
        "type",
        "method"
      ],
      "properties": {
        "type": {
          "type": "string",
          "const": "http"
        },
        "method": {
          "enum": [
            "GET",
            "HEAD",
            "DELETE"
          ],
          "type": "string"
        },
        "queryParams": {
          "type": "object",
          "required": [],
          "properties": {
            "id": {
              "type": "string",
              "description": "Any single identifier; its type is auto-detected"
            },
            "doi": {
              "type": "string",
              "description": "DOI, with or without a doi.org prefix"
            },
            "pmid": {
              "type": "string",
              "description": "PubMed id (digits)"
            },
            "arxiv": {
              "type": "string",
              "description": "arXiv id such as 2401.01234"
            },
            "limit": {
              "type": "integer",
              "maximum": 50,
              "minimum": 1,
              "description": "Max items to return, default 10"
            },
            "pmcid": {
              "type": "string",
              "description": "PubMed Central id such as PMC1234567"
            },
            "title": {
              "type": "string",
              "description": "Paper title to resolve by search"
            },
            "openalex_id": {
              "type": "string",
              "description": "OpenAlex work id such as W2741809807"
            }
          }
        }
      },
      "additionalProperties": false
    },
    "output": {
      "type": "object",
      "required": [
        "type"
      ],
      "properties": {
        "type": {
          "type": "string"
        },
        "example": {
          "type": "object"
        }
      }
    }
  }
}