Api Endpoint

supremeai

Check an x402 endpoint BEFORE paying it. Makes one unpaid request (never sends money), decodes the 402 terms, and verifies: the asset is a real USD stablecoin on that network, the price in USD vs your max_price_usd cap (default $0.50), payTo is a sane address (and matches expected_pay_to if given), HTTPS and certificate validity, redirects, and domain age. Returns safe_to_pay, a risk level, findings, and the cheapest acceptable payment option.

Open interactive test console

Offering

Provider: agents.supremeai.ca
Method: POST
Offering type: Api Endpoint
Transport type: http
Category: Other
Delivery: Not provided
Pricing model: Not provided
x402 version: 2

Endpoint context

URL: https://agents.supremeai.ca/v1/preflight
MIME type: Not provided
First seen: 2026-10-23T22:13:16.843Z
Last seen: 2026-11-01T15:07:42.568Z
Tags: X402, Security, Payments, Trust, pre-flight

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": "0xb65c6F9187195f4f9215b285d67D798b0162cA31"
  }
]

Observed health

Status: Reachable
Latest latency: 121 ms
Average latency: 295 ms
HTTP status: 405
Last checked: 2026-11-02T07:02:02.137Z
Reachability: 100% over 7 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "additionalProperties": false,
  "properties": {
    "body": {
      "properties": {
        "body": {
          "description": "JSON body to send with POST probes",
          "type": "object"
        },
        "expected_pay_to": {
          "description": "wallet you expect to be paid",
          "type": "string"
        },
        "max_price_usd": {
          "description": "highest acceptable price, default 0.50",
          "type": "number"
        },
        "method": {
          "description": "GET or POST; default tries GET then POST",
          "type": "string"
        },
        "url": {
          "description": "x402 endpoint you intend to pay",
          "type": "string"
        }
      },
      "required": [
        "url"
      ],
      "type": "object"
    },
    "bodyType": {
      "enum": [
        "json",
        "form-data",
        "text"
      ],
      "type": "string"
    },
    "method": {
      "enum": [
        "POST",
        "PUT",
        "PATCH"
      ],
      "type": "string"
    },
    "type": {
      "const": "http",
      "type": "string"
    }
  },
  "required": [
    "type",
    "method",
    "bodyType",
    "body"
  ],
  "type": "object"
}

Output schema

{
  "properties": {
    "example": {
      "properties": {
        "checks": {
          "type": "object"
        },
        "findings": {
          "type": "array"
        },
        "payment_options": {
          "type": "array"
        },
        "recommended_option": {
          "type": [
            "integer",
            "null"
          ]
        },
        "risk": {
          "enum": [
            "low",
            "medium",
            "high",
            "unknown"
          ],
          "type": "string"
        },
        "safe_to_pay": {
          "type": [
            "boolean",
            "null"
          ]
        },
        "summary": {
          "type": "string"
        }
      },
      "type": "object"
    },
    "type": {
      "type": "string"
    }
  },
  "required": [
    "type"
  ],
  "type": "object"
}