# Korean Stablecoin Premium Monitor (USDT/USDC)

> Korean Stablecoin Premium Monitor (USDT/USDC) is a paid API for AI agents from api.printmoneylab.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).

Returns the USDT and USDC premium on Korean exchanges compared to the official USD/KRW rate, serving as a crypto fund flow indicator for the Korean market

## Facts

- Endpoint: GET https://api.printmoneylab.com/api/v1/stablecoin-premium
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/api-printmoneylab-com-3d86b537
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_TiV9AZuXc4EBeCsVUktDG

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability api-printmoneylab-com-3d86b537
```

Example prompt: What's the current USDT and USDC premium on Korean crypto exchanges versus the official USD/KRW rate — I want to see if there's unusual fund flow into or out of Korea right now.

## When to prefer this

Use this endpoint when you specifically need stablecoin (USDT/USDC) premium data for Korean exchanges as a fund flow or market sentiment signal, rather than Kimchi Premium for volatile tokens. This is the go-to endpoint for monitoring whether capital is flowing into or out of Korean crypto markets via stablecoin demand, or for detecting arbitrage opportunities between the official KRW FX rate and stablecoin prices on Korean exchanges.

## Known failure modes

- Exchange price data unavailable — Korean exchange API may be down or rate-limited
- Official FX rate unavailable — upstream USD/KRW feed may be delayed
- Payment failure — x402 micropayment not processed, returns 402
- Invalid query parameters — malformed request returns 400
- Service temporarily unavailable — returns 503 during maintenance

## How this service works

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

## Output

Returns the current USDT and USDC premium percentages on Korean exchanges (e.g. Upbit, Bithumb) relative to the official USD/KRW foreign exchange rate, indicating whether stablecoins are trading above or below their USD peg in KRW terms — a signal for crypto capital inflows/outflows in Korea.

## Example request

```json
{
 "input": {
  "type": "http",
  "method": "GET",
  "queryParams": {}
 },
 "output": {
  "type": "json",
  "example": {
   "timestamp": "2024-01-15T10:30:00Z",
   "usdc_premium": 1.2,
   "usdt_premium": 1.5
  }
 }
}
```

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "fx_source": "exchangerate-api.com",
  "timestamp": 1776340000000,
  "stablecoins": {
   "usdc": {
    "price_krw": 1477,
    "volume_24h": 30000000,
    "premium_percent": 0.12,
    "premium_direction": "positive"
   },
   "usdt": {
    "price_krw": 1478,
    "volume_24h": 50000000,
    "premium_percent": 0.19,
    "premium_direction": "positive"
   }
  },
  "interpretation": {
   "negative_premium": "Capital flowing OUT of Korean crypto market",
   "positive_premium": "Capital flowing INTO Korean crypto market"
  },
  "official_fx_rate": 1475.27
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/api-printmoneylab-com-3d86b537/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.printmoneylab.com](https://www.zero.xyz/host/api.printmoneylab.com/llms.txt)