Encode and decode text: base64, hex and URL-encoding, both directions

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x6Ea120757d27f3c8eFae392CEdb114c8FE5970fd",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "1000",
    "maxTimeoutSeconds": 300
  }
]

{
  "bazaar": {
    "info": {
      "input": {
        "bodyFields": {
          "op": "base64 | base64d | hex | hexd | url | urld",
          "text": "Input text"
        },
        "bodyType": "json",
        "method": "POST",
        "type": "http"
      },
      "output": {
        "example": {
          "input_len": 5,
          "op": "base64",
          "output": "aGVsbG8="
        },
        "type": "json"
      }
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "properties": {
            "bodyFields": {
              "properties": {
                "op": {
                  "description": "base64 | base64d | hex | hexd | url | urld",
                  "type": "string"
                },
                "text": {
                  "description": "Input text",
                  "type": "string"
                }
              },
              "required": [
                "text",
                "op"
              ],
              "type": "object"
            },
            "bodyType": {
              "const": "json"
            },
            "method": {
              "const": "POST"
            },
            "type": {
              "const": "http"
            }
          },
          "required": [
            "type",
            "method"
          ],
          "type": "object"
        },
        "output": {
          "properties": {
            "example": {},
            "type": {
              "type": "string"
            }
          },
          "required": [
            "type"
          ],
          "type": "object"
        }
      },
      "required": [
        "input"
      ],
      "type": "object"
    }
  }
}

curl "https://oraclepost.higgsfield.app/api/encode"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

const res = await fetch("https://oraclepost.higgsfield.app/api/encode");
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://oraclepost.higgsfield.app/api/encode")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header