Run a fast live probe for one x402 endpoint and summarize challenge/payment-flow readiness

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x3f4CEE4c6bad04FcCA3138dFFDEE579ddf17049B",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "5000",
    "maxTimeoutSeconds": 300
  }
]

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "endpoint": "https://api.example.com/paid",
          "expectedPriceUsd": 0.01,
          "method": "GET"
        },
        "bodyType": "json",
        "method": "POST",
        "type": "http"
      },
      "output": {
        "example": {
          "ok": true,
          "recommendation": "test-first",
          "tool": "trust.check_x402"
        },
        "type": "json"
      }
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "additionalProperties": false,
          "properties": {
            "body": {
              "properties": {
                "endpoint": {
                  "description": "x402 endpoint to probe without paying.",
                  "format": "uri",
                  "type": "string"
                },
                "expectedPriceUsd": {
                  "description": "Expected maximum price in USD.",
                  "type": "number"
                },
                "method": {
                  "default": "GET",
                  "enum": [
                    "GET",
                    "POST",
                    "PUT",
                    "PATCH",
                    "DELETE",
                    "HEAD"
                  ],
                  "type": "string"
                }
              },
              "required": [
                "endpoint"
              ],
              "type": "object"
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            },
            "method": {
              "enum": [
                "POST"
              ],
              "type": "string"
            },
            "type": {
              "const": "http",
              "type": "string"
            }
          },
          "required": [
            "type",
            "method",
            "bodyType",
            "body"
          ],
          "type": "object"
        },
        "output": {
          "properties": {
            "example": {
              "properties": {
                "ok": {
                  "type": "boolean"
                },
                "recommendation": {
                  "type": "string"
                },
                "tool": {
                  "type": "string"
                }
              },
              "required": [
                "ok",
                "tool"
              ],
              "type": "object"
            },
            "type": {
              "type": "string"
            }
          },
          "required": [
            "type"
          ],
          "type": "object"
        }
      },
      "required": [
        "input"
      ],
      "type": "object"
    }
  }
}

curl "https://trust402.aztecbeacon.uk/api/trust/check-x402"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

const res = await fetch("https://trust402.aztecbeacon.uk/api/trust/check-x402");
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://trust402.aztecbeacon.uk/api/trust/check-x402")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header