GET folders/{folder_id}

The URL, and optional password, for the shared link of this item. This header can be used to access items that have not been explicitly shared with a user. Use the format `shared_link=[link]` or if a password is required then use `shared_link=[link]&shared_link_password=[password]`. This header can be used on the file or folder shared, as well as on any files or folders nested within the item.

A comma-separated list of attributes to include in the response. This can be used to request fields that are not normally returned in a standard response. Be aware that specifying this parameter will have the effect that none of the standard fields are returned in the response unless explicitly specified, instead only fields for the mini representation are returned, additional to the fields requested. Additionally this field can be used to query any metadata applied to the file by specifying the `metadata` field as well as the scope and key of the template to retrieve, for example `?field=metadata.enterprise_12345.contractTemplate`.

The unique identifier that represent a folder. The ID for any folder can be determined by visiting this folder in the web application and copying the ID from the URL. For example, for the URL `https://*.app.box.com/folder/123` the `folder_id` is `123`. The root folder of a Box account is always represented by the ID `0`.

Ensures an item is only returned if it has changed. Pass in the item's last observed `etag` value into this header and the endpoint will fail with a `304 Not Modified` if the item has not changed since.