行情 API非展示型方案期貨即時行情快照即時行情快照 GET /openapi/market-data/futures/snapshot 取得某證券的即時行情快照數據。返回最新價格、漲跌幅、成交量、換手率等關鍵市場指標。 Request Responses200401417500OKUnauthorized: Authentication requiredA business logic error triggered when the request cannot be processed due to domain-specific constraints.Internal Server Error.