push notification - Xtify API to delete TAG from all XIDs

is there xtify api can delete existing tag xtify (either api or xtify console website)

concern: following api's operate on xid input parameter, means tag , untag can done sending request xtify 1 one each xid.

https://api.xtify.com/2.0/tags/xid/addtag https://api.xtify.com/2.0/tags/xid/untag

i'm in need of options

where existing tag can removed xtify in single call xtify. (bulk untag)
similarly, can upload list of xid , provide tag name in single call (bulk tagging)

in case these not possible, please suggest best practice in such scenario. think making call multiple times each xid may not optimized way.

there no api bulk tag / untag in xtify. option change tags using 1 call each xid.

using settag little more efficient addtag/untag, since doesn't require many lookups. however, works if keeping list of tags.

Abbruzzese