This is the documentation for ConfiForms Server/Data Center app
However, this might also work for ConfiForms cloud and in most cases it does. But please see this page to understand the differences between server and cloud versions of the ConfiForms app.
Generally available for ConfiForms form administrators with Confluence admin permissions and for users who are Confluence space admins of the space where this form is located
Direct link to Import API is: http://CONFLUENCE_SERVER/confluence/confiforms/import.action?pageId=PAGE_ID
PAGE_ID is the id of the page where ConfiForms form is configured
And supports CSV, Excel and Excel 2007+ formats for data importing.
To start with data importing you need a ready ConfiForms form as the importing API expects you to set the mapping between columns and ConfiForms fields.
If your confluence server runs in a root context ("/") then the URL will not include /confluence