Is it working?
I tried:
https://danbooru.donmai.us/tags_aliases.json?search[name_matches]=kakubayashi_tsuyoshi
https://danbooru.donmai.us/tags_aliases.json?search[antecedent_name]=kakubayashi_tsuyoshi
https://danbooru.donmai.us/tags_aliases.json?search[name_matches]=kaku_(artist)
https://danbooru.donmai.us/tags_aliases.json?search[antecedent_name]=kaku_(artist)
And also plain https://danbooru.donmai.us/tags_aliases.json
Everything returns "Not found"
All I need is to have way to tell my script that artist tag "kakubayashi_tsuyoshi" found in post is for "kaku_(artist)" that I'm checking and change database accordingly.