Roundhouse AI

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.

DataLiveeip155:8453Exactvia cdp
https://goodsong.dev/verify/citation
CitationFact-checkHallucinationRetractionAcademic
Calls · 30d
6→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 25 snapshots so far.
$0.19
Verified settled volume
33 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0050
Listed price
As published in the catalog. Always read the live 402 before paying.
6
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-09-04 01:27Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xf3b36a95913eb2676fcdedb2ba6b0c96ade58de1

The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.

Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Provider

The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.

Accepts

The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.

0.005USDC≈ $0.005 USD
on Base · exact scheme

Pay 0.005 USDC on Base to 0xf3b3…58de1. The signed payment is good for 5 minutes.

Paid to
0xf3b3…58de1
USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
5000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0xf3b36a95913eb2676fcdedb2ba6b0c96ade58de1",
    "amount": "5000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "doi": "10.1126/science.1260419",
          "title": "Tissue-based map of the human proteome"
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json"
      },
      "output": {
        "type": "json",
        "example": {
          "cost": {
            "amount": "0.005",
            "currency": "USDC"
          },
          "checks": {
            "exists": true,
            "retracted": false,
            "year_match": true,
            "title_match": true,
            "authors_match": true,
            "journal_match": null
          },
          "verdict": "confirmed",
          "evidence": [
            {
              "url": "https://api.crossref.org/works/10.1126/science.1260419",
              "source": "crossref",
              "retrieved_at": "2026-08-30T12:00:00Z"
            }
          ],
          "canonical": {
            "doi": "10.1126/science.1260419",
            "year": 2015,
            "title": "Tissue-based map of the human proteome",
            "authors": [
              "Mathias Uhlén",
              "Linn Fagerberg"
            ],
            "journal": "Science",
            "year_candidates": [
              2015
            ]
          },
          "latency_ms": 312
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method",
            "bodyType",
            "body"
          ],
          "properties": {
            "body": {
              "properties": {
                "doi": {
                  "type": "string",
                  "description": "The citation's DOI, if known."
                },
                "year": {
                  "type": "integer",
                  "description": "Publication year."
                },
                "title": {
                  "type": "string",
                  "description": "The work's title."
                },
                "authors": {
                  "type": "array",
                  "items": {
                    "type": "string"
                  },
                  "description": "Author names, as e.g. ['Jane Doe', 'John Smith']."
                },
                "journal": {
                  "type": "string",
                  "description": "Journal or venue name."
                }
              },
              "description": "Provide a DOI and/or a title; other fields are checked against the canonical record when given."
            },
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "POST",
                "PUT",
                "PATCH"
              ],
              "type": "string"
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object",
              "properties": {
                "cost": {
                  "type": "object"
                },
                "checks": {
                  "type": "object"
                },
                "verdict": {
                  "enum": [
                    "confirmed",
                    "contradicted",
                    "unknown"
                  ],
                  "type": "string"
                },
                "evidence": {
                  "type": "array"
                },
                "canonical": {
                  "type": [
                    "object",
                    "null"
                  ]
                },
                "latency_ms": {
                  "type": "integer"
                }
              }
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-09-04 01:27Z
Last indexed by Roundhouse
2026-09-24 21:30Z
Last enriched (probe, favicon, geo)
2026-09-22 08:45Z
x402 version
2
Max timeout
300s
Liveness probe
HTTP 404
Report

Hand this page to an agent

Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.

GET api.roundhouseai.io/v0/endpoints

This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 25 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.

Open skill.md
Show the prompt
Using Roundhouse, look up the x402 service realcite-citation and tell me whether it is
worth paying: what a call costs, whether the endpoint answered when last probed, and what
its payment record actually shows.

curl -s 'https://api.roundhouseai.io/v0/endpoints?q=realcite-citation'
curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>'

Then call it: read the price from the live 402 at https://goodsong.dev/verify/citation, never from
a cached figure, and pay with an x402 client.

The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except
/v0/unified* and /v0/endpoints. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402,
or use an organization key from https://roundhouseai.io/dashboard/team.

If you do not have Roundhouse tools or skills installed, read
https://roundhouseai.io/skill.md first — it is the whole procedure.