All the WikibaseLexeme APIs that make edits should have a tags parameter to apply tags to the edit:
- wbladdform
- wblremoveform
- wbleditformelements
- wbladdsense
- wblremovesense
- wbleditsenseelements
- wblmergelexemes
Compare T286778: Add tags parameter to wbmergeitems API for a similar task in Wikibase.