Live AI-citation check: runs fresh probes against major AI assistants and reports whether

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x53598173ce7c26025bab0520d9e9d0c28fbcf7de",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "500000",
    "maxTimeoutSeconds": 120
  }
]

{
  "bazaar": {
    "info": {
      "input": {
        "method": "GET",
        "queryParams": {
          "domain": "example.com (string, required - bare domain to check)",
          "vertical": "healthcare_practice (string, optional - vertical id)"
        },
        "type": "http"
      },
      "output": {
        "example": {
          "agent_card_discovered": false,
          "citation_rate": 0.25,
          "domain": "example.com",
          "paid": true,
          "providers": [
            {
              "avg_position": 3,
              "citations": 1,
              "probes": 2,
              "provider": "openai"
            }
          ]
        },
        "type": "json"
      }
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "additionalProperties": false,
          "properties": {
            "method": {
              "enum": [
                "GET",
                "HEAD",
                "DELETE"
              ],
              "type": "string"
            },
            "queryParams": {
              "properties": {
                "domain": {
                  "description": "Bare domain to check citations for (required).",
                  "type": "string"
                },
                "vertical": {
                  "description": "Optional vertical id to pick prompt sets (auto-detected otherwise).",
                  "type": "string"
                }
              },
              "required": [
                "domain"
              ],
              "type": "object"
            },
            "type": {
              "const": "http",
              "type": "string"
            }
          },
          "required": [
            "type",
            "method"
          ],
          "type": "object"
        },
        "output": {
          "properties": {
            "example": {
              "properties": {
                "agent_card_discovered": {
                  "type": "boolean"
                },
                "citation_rate": {
                  "type": "number"
                },
                "domain": {
                  "type": "string"
                },
                "providers": {
                  "type": "array"
                }
              },
              "type": "object"
            },
            "type": {
              "type": "string"
            }
          },
          "required": [
            "type"
          ],
          "type": "object"
        }
      },
      "required": [
        "input"
      ],
      "type": "object"
    }
  }
}

curl "https://mudko.com/api/x402/citation-check"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

const res = await fetch("https://mudko.com/api/x402/citation-check");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

import httpx
res = httpx.get("https://mudko.com/api/x402/citation-check")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header