MediaWiki:Apihelp-query+filerepoinfo-param-prop

Which repository properties to get (there may be more available on some wikis):

apiurl
URL to the repository API - helpful for getting image info from the host.
name
The key of the repository - used in e.g. $wgForeignFileRepos and imageinfo return values.
displayname
The human-readable name of the repository wiki.
rooturl
Root URL for image paths.
local
Whether that repository is the local one or not.