FRED（Federal Reserve Economic Data，联邦储备经济数据）是由圣路易斯联邦储备银行经济研究部提供的网络服务，允许开发者从FRED和ALFRED网站检索经济数据。用户可根据数据来源、发布信息、类别、序列及其他偏好自定义请求。该API提供对来自108个来源的逾80万条经济时间序列数据的访问，涵盖类别、发布信息、序列、来源及标签等内容，并通过地图API（GeoFRED）提供地理数据。
此服务商级交接只保留公开 ID，不会猜测工具或业务任务；请在重新发现时选择当前工具，之后才能把配置视为完整。
Get an economic data series. This request can return either XML or JSON by setting the file_type parameter to xml or json. Note that the default value of file_type is xml.
Get detailed information about a specific economic data category from the Federal Reserve Economic Data (FRED) system.
Get FRED tags. Optionally, filter results by tag name, tag group, or search.
Get a category.
Get the child categories for a specified parent category.
Get the FRED tags for a category. Optionally, filter results by tag name, tag group, or search. Series are assigned tags and categories. Indirectly through series, it is possible to get the tags for a category. No tags exist for a category that does not have series. See the related request fred/category/related_tags.
Get the categories for an economic data series.
Get a source of economic data.
Get all sources of economic data.
This request returns shape files from FRED in GeoJSON format.
Get the related FRED tags for one or more FRED tags. Optionally, filter results by tag group or search.
Retrieves the categories for a specified economic data series.
Returns a cross section of regional data for a specified series_id and date. If no date is specified, the most recent data available are returned. Supports XML or JSON output.
Get the FRED tags for a series. This request can return either XML or JSON by setting the file_type parameter to xml or json. Note that the default value of file_type is xml.
Returns shape files from FRED in GeoJSON format.
Get FRED tags. Optionally, filter results by tag name, tag group, or search. FRED tags are attributes assigned to series.
Get the observations or data values for an economic data series. This request can return either XML, JSON, Excel Spreadsheet, or a zipped CSV by setting the file_type parameter to xml, json, xlsx, or csv.
Get the observations or data values for an economic data series.
