Collects up to 15 recent EP publication candidates from a caller-supplied IPC class throug

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "15000",
    "maxTimeoutSeconds": 300
  }
]

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "concept": "A low-energy process for manufacturing concrete blocks with controlled vibration and reusable moulds.",
          "ipc": "B28B7-00",
          "limit": 5,
          "published_since_days": 730
        },
        "bodyType": "json",
        "method": "POST",
        "type": "http"
      }
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "additionalProperties": false,
          "properties": {
            "body": {
              "additionalProperties": false,
              "properties": {
                "concept": {
                  "maxLength": 5000,
                  "minLength": 20,
                  "type": "string"
                },
                "ipc": {
                  "description": "Required EPO-style IPC class such as B28B7-00; it defines the official candidate set before semantic ranking.",
                  "pattern": "^[A-H]\\d{2}[A-Z]\\d{1,4}-\\d{2,6}$",
                  "type": "string"
                },
                "limit": {
                  "default": 5,
                  "maximum": 15,
                  "minimum": 1,
                  "type": "integer"
                },
                "published_since_days": {
                  "default": 365,
                  "maximum": 3650,
                  "minimum": 7,
                  "type": "integer"
                }
              },
              "required": [
                "concept",
                "ipc"
              ],
              "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"
        }
      },
      "required": [
        "input"
      ],
      "type": "object"
    }
  }
}

curl "https://research.halowerk.com/v1/patent-prior-art"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

const res = await fetch("https://research.halowerk.com/v1/patent-prior-art");
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://research.halowerk.com/v1/patent-prior-art")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header