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Korean Stablecoin Premium Monitor (USDT/USDC)
x402
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
Price / call$0.001
Success—
StatusUnknown
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 use cases
Monitor Korean crypto capital inflows daily
“Check the USDT and USDC premiums on Korean exchanges right now — I need to track whether capital is flowing into or out of the Korean market today.”
Detect arbitrage opportunities across markets
“What's the stablecoin premium situation in Korea compared to the official FX rate? I'm looking for arbitrage trades between Korean exchanges and global markets.”
Assess market sentiment via fund flow signals
“Pull the current USDC and USDT premiums on Upbit and Bithumb — high premiums usually mean bullish sentiment, so I want to see what the Korean market is signaling right now.”
Technical details
Endpoint
GEThttps://api.printmoneylab.com/api/v1/stablecoin-premiumWhen to prefer
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.
Side effects
- 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
Input
{
"input": {
"type": "http",
"method": "GET",
"queryParams": {}
},
"output": {
"type": "json",
"example": {
"timestamp": "2024-01-15T10:30:00Z",
"usdc_premium": 1.2,
"usdt_premium": 1.5
}
}
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| properties | string |
Output
{
"receipt": {
"id": "rcpt_20260529_355154",
"payer": "0x9CC42f3d9245B867ACccd630B43f906c1665b176",
"amount": "0.001",
"signer": "0x1AdF0f9e576E94a150208F08D2C31F791932E781",
"network": "eip155:8453",
"tx_hash": "0xe86affcca40945308948367b859ddc4e91060b40e71a2945cea7420825487f0d",
"currency": "USDC",
"endpoint": "/api/v1/stablecoin-premium",
"merchant": "0xcF9223eCe895258dEa8D288AEBcf846Ab8E342fB",
"issued_at": "2026-05-29T20:27:46.898Z",
"signature": "0x3d3c22c380120a0cbe335a353139a1c7c49a7bb051aa3cd61e26b3307e20284e5275116f3e59bb57b807fe010ffca04ad144c8d3f1750d4527e7e12849c270831c"
},
"fx_source": "exchangerate-api.com",
"timestamp": 1780086464989,
"stablecoins": {
"usdc": {
"price_krw": 1482,
"volume_24h": 821999.7420179,
"premium_percent": -1.09,
"premium_direction": "negative"
},
"usdt": {
"price_krw": 1480,
"volume_24h": 47352941.26666721,
"premium_percent": -1.23,
"premium_direction": "negative"
}
},
"interpretation": {
"negative_premium": "Capital flowing OUT of Korean crypto market",
"positive_premium": "Capital flowing INTO Korean crypto market"
},
"official_fx_rate": 1498.37
}Schema · Response
{
"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
}
}Tags
x402
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