Does this x402 seller actually deliver when paid? We test the full flow as a real buyer: q

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0xeed6af31937a6123924d4ecdc3b3ed729f92867e",
    "asset": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
    "amount": "250000",
    "maxTimeoutSeconds": 60
  }
]

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "endpoint": "https://api.bitrefill.com/x402/gift-cards/search"
        },
        "bodyType": "json",
        "method": "POST",
        "type": "http"
      },
      "output": {
        "example": {
          "signature": {
            "alg": "ed25519",
            "canonicalization": "RFC8785"
          },
          "verdict": {
            "outcome": {
              "conformant": true,
              "depth": "full",
              "steps": {
                "deliver": {
                  "pass": true
                },
                "quote": {
                  "pass": true
                },
                "requirements": {
                  "pass": true
                },
                "settle": {
                  "pass": true
                }
              }
            },
            "type": "payment_flow_conformance"
          },
          "verdict_version": "verdict-v1.1.0"
        },
        "type": "json"
      }
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "additionalProperties": false,
          "properties": {
            "body": {
              "additionalProperties": false,
              "properties": {
                "endpoint": {
                  "description": "https:// resource URL whose x402 payment machinery to test",
                  "maxLength": 500,
                  "type": "string"
                },
                "expected_payto": {
                  "description": "optional 0x… address you expect the endpoint to charge to; mismatch is a named finding",
                  "type": "string"
                },
                "listing_id": {
                  "description": "optional catalog listing id — compares the advertised payTo against the cataloged seller",
                  "type": "string"
                }
              },
              "required": [
                "endpoint"
              ],
              "type": "object"
            },
            "bodyType": {
              "enum": [
                "json"
              ],
              "type": "string"
            },
            "method": {
              "enum": [
                "POST"
              ],
              "type": "string"
            },
            "type": {
              "const": "http",
              "type": "string"
            }
          },
          "required": [
            "type",
            "method",
            "bodyType",
            "body"
          ],
          "type": "object"
        },
        "output": {
          "properties": {
            "example": {
              "type": "object"
            },
            "type": {
              "const": "json",
              "type": "string"
            }
          },
          "required": [
            "type"
          ],
          "type": "object"
        }
      },
      "required": [
        "input"
      ],
      "type": "object"
    }
  }
}

curl "https://mcp.agenteconomy.cloud/api/v1/check"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

const res = await fetch("https://mcp.agenteconomy.cloud/api/v1/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://mcp.agenteconomy.cloud/api/v1/check")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header