Api Endpoint

x402 Listing Quality Scanner

Heuristic calls-vs-unique-payers pattern score for the top x402 resources in the CDP Bazaar and PayAI catalogs: per resource price_usdc, unique_payers, calls, wash_risk (low/medium/high) and a reason. No input. A heuristic signal for due diligence before spending, not a finding about any seller. Cached 15 minutes.

Open interactive test console

Offering

Provider: x402-niche-briefs.fly.dev
Method: GET
Offering type: Api Endpoint
Transport type: http
Category: Security
Delivery: Not provided
Pricing model: Not provided
x402 version: 2

Endpoint context

URL: https://x402-niche-briefs.fly.dev/v1/listing-quality
MIME type: application/json
First seen: 2026-10-16T02:07:52.569Z
Last seen: 2026-11-03T22:05:39.788Z
Tags: X402, listing-quality, unique-payers, wash, Discovery, payai, Bazaar

Website

Payment pricing

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

Payment option 1: 0.01 USDC
Atomic price: 10000 · Network: eip155:8453 · Asset: USDC · Scheme: exact

Raw x402 terms

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "10000",
    "payTo": "0x847f54ae8dDFD71ed7bC930C1f7a73576FAb03A9"
  }
]

Observed health

Status: Healthy
Latest latency: 90 ms
Average latency: 190 ms
HTTP status: 402
Last checked: 2026-11-03T22:05:39.782Z
Reachability: 100% over 14 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": {}
    }
  },
  "required": [
    "type",
    "method"
  ],
  "additionalProperties": false
}

Output schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "input": {
      "additionalProperties": false,
      "properties": {
        "method": {
          "enum": [
            "GET"
          ],
          "type": "string"
        },
        "queryParams": {
          "properties": {},
          "type": "object"
        },
        "type": {
          "const": "http",
          "type": "string"
        }
      },
      "required": [
        "type",
        "method"
      ],
      "type": "object"
    },
    "output": {
      "properties": {
        "example": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "as_of": {
              "type": "string"
            },
            "items": {
              "items": {
                "properties": {
                  "calls": {},
                  "note": {
                    "type": "string"
                  },
                  "price_usdc": {},
                  "resource": {
                    "type": "string"
                  },
                  "unique_payers": {},
                  "wash_risk": {
                    "type": "string"
                  }
                },
                "required": [
                  "resource",
                  "price_usdc",
                  "unique_payers",
                  "calls",
                  "wash_risk",
                  "note"
                ],
                "type": "object"
              },
              "type": "array"
            },
            "source": {
              "type": "string"
            }
          },
          "required": [
            "as_of",
            "source",
            "items"
          ],
          "type": "object"
        },
        "type": {
          "type": "string"
        }
      },
      "required": [
        "type"
      ],
      "type": "object"
    }
  },
  "required": [
    "input"
  ],
  "type": "object"
}