KR Rates and FXService

KR Rates & FX: official Korean interest rates and won exchange rates. Bank of Korea base rate, call, KOFR, CD, CP, MSB and the KTB curve 1y-50y with spreads (ECOS); KRW deal basis, TTB and TTS rates for 20+ currencies (Export-Import Bank of Korea); this week's customs FX used for import duty (Korea Customs Service); indicative conversion. Every value carries its own observation date and source; missing days are reported, never filled. No forecasts. Every response is a JSON object. Identity via GET /v1/version, readiness via GET /v1/health, function via GET /v1/rates, /v1/rate, /v1/fx, /v1/convert, /v1/customs-fx and POST /v1/query (ko/en).