Index onlineMerchant portal
Api Endpoint

ChainWard counterparty check

Check a Base or BNB Chain (?chain=bsc) address before you pay it: a verdict label pay / hold / unknown with a human text (Pay, Hold, Inactive, No track record, Couldn't check or Payer hidden) and the one reason, such as active with real counterparties or a high-severity flag named. Under it, the evidence: every flag with its source, what was not assessed, and the EAS attestation if one exists. On-chain behavior only.

Open interactive test console

Offering

Provider
api.chainward.ai
Method
GET
Offering type
Api Endpoint
Transport type
http
Category
Blockchain And Crypto
Delivery
Not provided
Pricing model
Not provided
x402 version
2

Endpoint context

URL
https://api.chainward.ai/api/risk/counterparty
MIME type
application/json
First seen
2026-10-16T02:01:55.574Z
Last seen
Tags
Base, bsc, bnb, Risk, counterparty, Wallet, address, reputation, Trust, due-diligence, Agents, eas, attestation

Website

Payment pricing

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

Payment option 1
0.05 USDC
Atomic price: 50000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Raw x402 terms
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "50000",
    "payTo": "0xf7Ee65130Fb2B3bb42Cc5cbFED085d7D482667cD"
  }
]

Observed health

Status
Healthy
Latest latency
250 ms
Average latency
694 ms
HTTP status
402
Last checked
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": {
        "address": {
          "type": "string",
          "pattern": "^0x[a-fA-F0-9]{40}$",
          "description": "Address to check"
        },
        "chain": {
          "type": "string",
          "enum": [
            "base",
            "bsc"
          ],
          "default": "base",
          "description": "Chain the address is on. Payment is USDC on Base either way."
        }
      },
      "required": [
        "address"
      ]
    }
  },
  "required": [
    "type",
    "method"
  ],
  "additionalProperties": false
}

Output schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string"
    },
    "example": {
      "type": "object"
    }
  },
  "required": [
    "type"
  ]
}