{"auth":"none","endpoints":["GET /healthz","GET /v1/status","GET /v1/pairs","GET /v1/rates?quote=JPY","GET /v1/rates/{pair}","GET /v1/history/{pair}?limit=100"],"interval_seconds":"configured by FETCH_INTERVAL_SECONDS (default 60)","service":"Wideweb Exchange API","source":"Yahoo!ファイナンス（LINE FX）","timezone":"Asia/Tokyo","version":"1.0"}