行情 API非展示型方案基礎檔案公司公告公司公告 GET /openapi/fundamentals/stock/filings • 功能說明：取得股票最近3份公告文件。• 頻率限制：速率限制每60秒60個請求 Request Responses200401417500OKUnauthorized: Authentication requiredA business logic error triggered when the request cannot be processed due to domain-specific constraints.Internal Server Error.