I need help finding a very specific AI slop site due to an exploitable feature of it's input system (it's relevant to a potential future raid I promise)

A few months ago I recall looking at an unethical guide about AI art, it may have been the wiki pages for stable diffusion/AI art on soyjakwiki, encyclopediadramatica, or installgentoo, or it may have been a reddit or /g/ post (I had all of those sites open within a short duration) and I found a site that worked very effectively for generating AI body horror (Again, I want to use this as part of a raid, I have a very specific target in mind: a discord server which specifically has no AI-generated body horror as one of it's rules due to it's users both rabidly hating AI art and being the type of people to have a multi-paragraph trigger list ). The way the generation site worked was, you'd have a text input where you could put in a prompt, but entering a prompt took you to a page on the site with an URL that ended in your prompt. The important part was, if you altered the text at the end URL and pressed enter, it'd immediately generate an image based on that prompt without having to go to the main page and text input, with the same prompt always generating the same image (seeds seemed to be based on the prompt, this will be important later). However, I found that making a prompt in the form of your prompt /? any argument = any characters consistently generated an image based on your prompt but if any characters were different, the image was slightly different instead of the same, meaning that you could mass-generate images from a single prompt by keeping open a tab with beginning of the url/your prompt/?any argument=any characters, and alternating between command-enter and adding a character to any characters. Due to this, I could make a tool for spamming discord servers with AI generated body horror by pasting the same link several times, modifying the end each time, and sending it (if the links didn't immediately embed I could command click on each of them to open them in advance in case embed viewers don't trigger image generation) to create a multi-page wall of body horror.

Unfortunately, I looked everywhere I could (I cleared my internet history as usual), and was unable to find it, so if anyone more informed about the differences of AI image generation sites knows about a site which stores the prompt in the URL and nothing else (the site had no image ids, the prompt was the only unique part of the URL), please let me know.