WaniKani has an API. With it you can make apps to improve WaniKani (or make it worse, as is sometimes the case). Ask your questions about the API here. Look for and find WaniKani apps, browser extensions, userscripts, websites, and more. Just be careful out there, kids.
The API & Third Party Apps category is "public" in that content of this category can be found via outside search engines, even without a WaniKani account. Please don't post anything that you don't want the public to see associated with your WaniKani username.