USDT/USDC premium on Korean exchanges vs official USD/KRW rate — fund flow indicator

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0xcF9223eCe895258dEa8D288AEBcf846Ab8E342fB",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "2000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:137",
    "payTo": "0xcF9223eCe895258dEa8D288AEBcf846Ab8E342fB",
    "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
    "amount": "2000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "payTo": "3Ywxk31SvWKwZBdY6bLvjmn5h4mzWcT3HJ5UZbYXoVy9",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "2000",
    "maxTimeoutSeconds": 300
  }
]

{
  "bazaar": {
    "info": {
      "input": {
        "method": "GET",
        "type": "http"
      },
      "output": {
        "example": {
          "fx_source": "exchangerate-api.com",
          "interpretation": {
            "negative_premium": "Capital flowing OUT of Korean crypto market",
            "positive_premium": "Capital flowing INTO Korean crypto market"
          },
          "official_fx_rate": 1475.27,
          "stablecoins": {
            "usdc": {
              "premium_direction": "positive",
              "premium_percent": 0.12,
              "price_krw": 1477,
              "volume_24h": 30000000
            },
            "usdt": {
              "premium_direction": "positive",
              "premium_percent": 0.19,
              "price_krw": 1478,
              "volume_24h": 50000000
            }
          },
          "timestamp": 1776340000000
        },
        "type": "json"
      }
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "additionalProperties": false,
          "properties": {
            "method": {
              "enum": [
                "GET",
                "HEAD",
                "DELETE"
              ],
              "type": "string"
            },
            "queryParams": {
              "properties": {},
              "type": "object"
            },
            "type": {
              "const": "http",
              "type": "string"
            }
          },
          "required": [
            "type",
            "method"
          ],
          "type": "object"
        },
        "output": {
          "properties": {
            "example": {
              "type": "object"
            },
            "type": {
              "type": "string"
            }
          },
          "required": [
            "type"
          ],
          "type": "object"
        }
      },
      "required": [
        "input"
      ],
      "type": "object"
    }
  },
  "catalog": {
    "category": "korean-crypto-data",
    "data_sources": [
      "upbit",
      "bithumb"
    ],
    "jurisdiction": "KR",
    "language": "en",
    "locale": "ko-KR",
    "target_users": [
      "ai-agents",
      "trading-bots"
    ],
    "update_frequency": "real-time"
  }
}

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

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