Index onlineMerchant portal
Api Endpoint

realcite-citation

Verify a citation: does it exist, is it retracted, and do the given title/authors/year/journal match the canonical record? Checked against Crossref (retraction data included) with OpenAlex as a fallback when no DOI is given.

Open interactive test console

Offering

Provider
goodsong.dev
Method
POST
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://goodsong.dev/verify/citation
MIME type
Not provided
First seen
2026-10-16T01:50:06.715Z
Last seen
Tags
citation, fact-check, hallucination, retraction, academic

Website

Payment pricing

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

Payment option 1
0.005 USDC
Atomic price: 5000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Raw x402 terms
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "5000",
    "payTo": "0xf3b36a95913eb2676fcdedb2ba6b0c96ade58de1"
  }
]

Observed health

Status
Unreachable
Latest latency
96 ms
Average latency
39 ms
HTTP status
Not provided
Last checked
Reachability
92.9% over 14 checks

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

Input schema

{
  "additionalProperties": false,
  "properties": {
    "body": {
      "description": "Provide a DOI and/or a title; other fields are checked against the canonical record when given.",
      "properties": {
        "authors": {
          "description": "Author names, as e.g. ['Jane Doe', 'John Smith'].",
          "items": {
            "type": "string"
          },
          "type": "array"
        },
        "doi": {
          "description": "The citation's DOI, if known.",
          "type": "string"
        },
        "journal": {
          "description": "Journal or venue name.",
          "type": "string"
        },
        "title": {
          "description": "The work's title.",
          "type": "string"
        },
        "year": {
          "description": "Publication year.",
          "type": "integer"
        }
      }
    },
    "bodyType": {
      "enum": [
        "json",
        "form-data",
        "text"
      ],
      "type": "string"
    },
    "method": {
      "enum": [
        "POST",
        "PUT",
        "PATCH"
      ],
      "type": "string"
    },
    "type": {
      "const": "http",
      "type": "string"
    }
  },
  "required": [
    "type",
    "method",
    "bodyType",
    "body"
  ],
  "type": "object"
}

Output schema

{
  "properties": {
    "example": {
      "properties": {
        "canonical": {
          "type": [
            "object",
            "null"
          ]
        },
        "checks": {
          "type": "object"
        },
        "cost": {
          "type": "object"
        },
        "evidence": {
          "type": "array"
        },
        "latency_ms": {
          "type": "integer"
        },
        "verdict": {
          "enum": [
            "confirmed",
            "contradicted",
            "unknown"
          ],
          "type": "string"
        }
      },
      "type": "object"
    },
    "type": {
      "type": "string"
    }
  },
  "required": [
    "type"
  ],
  "type": "object"
}