Spent an afternoon learning some jQuery and built a little tool that uses the Rule34.xxx API to grab every URL associated with a tag. Why would someone want this? Well, after sending a takedown notice about my own work, I realized the whole ordeal was very tedious to copy and paste every single URL under my tag one at a time. I had a hundred or so posts, but some artists have hundreds to thousands of posts with their name on it.
The takedown process requires you to submit individual URLs of every post you request to be taken down, as well as proof that you are the artist who made the art in question (such as posting "This is proof I am submitting a DMCA takedown request to Rule34" from your main artwork accounts).
The URL grabber tool is available here: https://stellarfur.net/r34tool.html
Using it is explained in its entirety on the page itself, and it couldn't be easier since it just uses Rule34's own API and tagging system to return every post ID and convert it to a usable URL. It's a very simply-made tool and is entirely client-sided (meaning it doesn't use our servers to process it), you can even just save the page itself and run it locally should you need to for any reason. This can also have other uses, as it literally just compiles URLs associated with any tag you feed it, so go nuts.