>>Jeanne+(OP)
Reading the title I thought you meant the opposite.
Aka, an ai.txt file that disallow ai to train or use your data similar to robots.txt (but for cases when you still want to be crawled, just not extrapolated)
>>matsem+ae
I guess the good part that in ai.txt you can talk to AI. So if you want you can tell it to not crawl or make other agreements with it, just in plain english. What a time to be alive.