Greasy Fork is available in English.
Anki mode for Wanikani
< Feedback on Wanikani Anki Mode
Indeed, you'll find more information on the link posted by nelemnaru.
However, I do NOT get notifications for discussions on my scripts. I only saw this by chance and far too late. You'll only get a guaranteed answer if you contact me through the WK forums.
What does this script actually do?
I have only heard how good Anki is but haven't used it. What is "anki mode" and how does it change WaniKani?