Korean government procurement (KONEPS/Narajangteo) bid notices, cursor-based delta

[
  {
    "scheme": "exact",
    "network": "base",
    "payTo": "0x3b20d22540deb3CF1162B195CD15756adb5ceB5D",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "5000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "solana",
    "payTo": "5xrtB5SFAb214aC2EmLiyMJGop2EVef1zWBdDpLF7s9y",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "5000",
    "maxTimeoutSeconds": 300
  }
]

{
  "bazaar": {
    "info": {
      "input": {
        "method": "GET",
        "queryParams": {
          "bid_type": "service",
          "limit": "100",
          "since_cursor": "18000"
        },
        "type": "http"
      },
      "output": {
        "example": {
          "bids": [
            {
              "bid_ntce_no": "20260722000123",
              "bid_type": "service",
              "budget_krw": 480000000,
              "close_dt": "2026-08-01 10:00",
              "detail_url": "https://www.g2b.go.kr/...",
              "estimated_price_krw": 436363636,
              "id": 18234,
              "notice_dt": "2026-07-22 10:00",
              "org_demand": "행정안전부",
              "org_notice": "조달청",
              "title": "2026년 AI 기반 민원상담 시스템 구축 용역"
            }
          ],
          "count": 1,
          "cursor": 18234
        },
        "type": "object"
      }
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "properties": {
            "method": {
              "enum": [
                "GET"
              ],
              "type": "string"
            },
            "queryParams": {
              "type": "object"
            },
            "type": {
              "const": "http",
              "type": "string"
            }
          },
          "required": [
            "type",
            "method"
          ],
          "type": "object"
        },
        "output": {
          "properties": {
            "example": {},
            "type": {
              "type": "string"
            }
          },
          "required": [
            "type"
          ],
          "type": "object"
        }
      },
      "required": [
        "input"
      ],
      "type": "object"
    }
  }
}

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

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