Index onlineMerchant portal
Api Endpoint

TariffMonkee

Citation check: takes a claim and a cited source (URL or DOI) and returns supported, contradicted or not_addressed with the verbatim passage as evidence. The source is fetched with a full browser render. Dead, paywalled or PDF-only sources return source_unavailable, never a false contradicted.

Open interactive test console

Offering

Provider
tariffmonkee.com
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://tariffmonkee.com/paid/verify-citation
MIME type
application/json
First seen
2026-10-19T02:45:48.894Z
Last seen
Tags
citation-check, fact-check, Verification, doi

Website

Payment pricing

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

Payment option 1
0.025 USDC
Atomic price: 25000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Payment option 2
0.025 USDC
Atomic price: 25000 · Network: solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · Asset: USDC · Scheme: exact
Raw x402 terms
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "25000",
    "payTo": "0x0FAD15c9f4C38f439fd56C4d4e4Bc8fC71c42767"
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "25000",
    "payTo": "EjwKsavtpL4MeboquZgFerQy6voUbKqJv5TyukEH8vPN"
  }
]

Observed health

Status
Healthy
Latest latency
1239 ms
Average latency
2390 ms
HTTP status
402
Last checked
Reachability
90.9% 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"
      ]
    },
    "queryParams": {
      "type": "object",
      "properties": {
        "claim": {
          "type": "string",
          "description": "The claim to check against the source."
        },
        "url": {
          "type": "string",
          "description": "The cited source: a URL, or a bare DOI such as 10.1234/abcd."
        }
      },
      "required": [
        "claim",
        "url"
      ]
    }
  },
  "required": [
    "type",
    "method"
  ],
  "additionalProperties": false
}

Output schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string"
    },
    "example": {
      "type": "object",
      "properties": {
        "claim": {
          "type": "string"
        },
        "url": {
          "type": "string"
        },
        "verdict": {
          "type": "string"
        },
        "evidence": {
          "type": "string"
        },
        "reasoning": {
          "type": "string"
        },
        "confidence": {
          "type": "string"
        },
        "retracted": {
          "type": "boolean"
        },
        "model": {
          "type": "string"
        },
        "source_truncated": {
          "type": "boolean"
        },
        "source_fetched_at": {
          "type": "string"
        },
        "cached": {
          "type": "boolean"
        }
      },
      "required": [
        "claim",
        "url",
        "verdict",
        "evidence",
        "reasoning",
        "confidence",
        "retracted",
        "model",
        "source_truncated",
        "source_fetched_at",
        "cached"
      ]
    }
  },
  "required": [
    "type"
  ]
}