sheska is a simple little script for adding metadata tags to image files, based on the tags they're assigned on Sankakuchan, a Gelbooru-style imageboard.

You'll need to install exiftool and put it in your PATH, and move ExifTool_config to ~/.ExifTool_config. Other than that, sheska should run with just a somewhat recent version of Python 2.x.

Usage is simple: feed a bunch of filenames to sheska.py. A fair amount of text will be spit out to tell you what's happening; if you don't like that, redirect it off to /dev/null with your shell.

Sheska is an amazing librarian from Fullmetal Alchemist. While her talents lie more towards memorizing large quantities of text, I've spent too much time on TvTropes as it is, so I'm counting her as "close enough".