Because we can't have nice things on the web, here is a stupid trick to kill some bots. First, create a hefty 10TB (g)zip bomb with dd if=/dev/zero bs=10M count=1G | gzip -9 > /etc/caddy/10T.gzip. Don't worry, this doesn't take disk space nor ram, only a bit of CPU and some time. Then, put the following snippet in your Caddy configuration:

handle /trap {
        file_server
        try_files /etc/caddy/10T.gzip
        header Content-Encoding gzip
        header Content-Type text/html
}

Hilarious side-note: if you don't put the file_server directive, things won't work properly and you'll waste a lot of time trying to figure out why.

Anyway, check that things are working with curl --compressed https://dustri.org/trap --output /dev/null, and if it's the case, put a Disallow: /trap line in your robots.txt file, and add a <a hidden href="./trap">anti-ai trap</a> somewhere on your webpages.

Congratulations on making the web a better place.