@josh @charliebrownau Uhhh, i2p does work with dynamic websites. It works with any TCP protocol.
geti2p.net/en/blog/post/2019/06/02/basic-tunnel-tutorial

Docs for i2pd (alternative i2p software):
i2pd.readthedocs.io/en/latest/user-guide/tunnels/

Java i2p does come with a webserver built-in that only supports static content, but it does not have to be used. There are many dynamic sites on i2p such as zzz.i2p/ and kelvinchan.i2p/ .