Dokodemo AniList (Unofficial) от 4ndrs

A web extension to search for anime, manga, characters, staff, and studios using the AniList's API. It adds a new context menu option that can be clicked making a search bar (similar to the one on AniList) appear floating on the current page. If there is text selected, it will be used as a search term when clicking the option.

Source code & development can be found here: https://github.com/4ndrs/dokodemo-anilist. Currently experimental, expect breakage/design changes in minor or patch version bumps.