{"service":"Kimchi Premium API","version":"1.0.0","description":"Real-time BTC/ETH/SOL/XRP Kimchi Premium Index — Korea vs Global exchange price spread","endpoints":{"/":"This info (free)","/kimchi-premium":"Premium data ($0.003/call via x402, Solana USDC)"},"source":"Upbit (KR) vs Binance (Global)","pricing":"$0.003 per call via x402 protocol"}