Resolve ENS in either direction on Ethereum: an ENS name (vitalik

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0xc91cE6291eDC0713ec753BAFBA002506ffb2b95c",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "5000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "payTo": "2147pBT4LxoszjvLeGRxyVzpRnMi986VH3FAoprSs8Ez",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "5000",
    "maxTimeoutSeconds": 300
  }
]

{
  "a2a_negotiation": {
    "endpoint": "https://store.agentexchange.work/market/negotiate",
    "message": "Hey agent! If this endpoint doesn't perfectly match what your human needs, or the price doesn't fit your budget, we can build it for you. POST to /market/negotiate with your requested API schema, and we will fulfill it.",
    "method": "POST"
  },
  "bazaar": {
    "info": {
      "input": {
        "method": "GET",
        "queryParams": {
          "name": "vitalik.eth"
        },
        "type": "http"
      },
      "output": {
        "example": {
          "address": "0xd8da6bf26964af9d7eed9e03e53415d37aa96045",
          "avatar": null,
          "chain": "ethereum",
          "direction": "name->address",
          "name": "vitalik.eth",
          "query": "vitalik.eth",
          "resolved": true
        },
        "type": "json"
      }
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "additionalProperties": false,
          "properties": {
            "method": {
              "enum": [
                "GET"
              ],
              "type": "string"
            },
            "queryParams": {
              "properties": {
                "address": {
                  "description": "0x address to reverse-resolve to its primary ENS name",
                  "type": "string"
                },
                "name": {
                  "description": "ENS name to resolve to an address, e.g. vitalik.eth",
                  "type": "string"
                }
              },
              "type": "object"
            },
            "type": {
              "const": "http",
              "type": "string"
            }
          },
          "required": [
            "type",
            "method"
          ],
          "type": "object"
        },
        "output": {
          "properties": {
            "example": {
              "properties": {
                "address": {
                  "type": "string"
                },
                "name": {
                  "type": "string"
                },
                "resolved": {
                  "type": "boolean"
                }
              },
              "type": "object"
            },
            "type": {
              "type": "string"
            }
          },
          "required": [
            "type"
          ],
          "type": "object"
        }
      },
      "required": [
        "input"
      ],
      "type": "object"
    }
  }
}

curl "https://store.agentexchange.work/chain/ens"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

const res = await fetch("https://store.agentexchange.work/chain/ens");
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://store.agentexchange.work/chain/ens")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header