I created a little script inspired by this feature request: https://community.wanikani.com/t/search-wanikani-via-chrome-search-bar/
It allows you to search WaniKani by using the parameter “q” in the URL, such as: https://www.wanikani.com/dashboard?q=昔話
This in turn will make it possible to define a custom search keyword e.g. in Chrome so that you can e.g. type “wk”, then hit space and enter the term you want to search for:
It is available via greasyfork: https://greasyfork.org/en/scripts/40499-wanikani-url-keyword-search
Only tested it (briefly… ) in Chrome.