[seifferth]

It looks like the scorpion protocol is described at https://github.com/zzo38/scorpion/. To retrieve the file mentioned above (without TLS), use:

    nc zzo38computer.org 1517 <<<'R scorpion://zzo38computer.org/smallweb.txt'

[Joker_vD]

Oh wow, it even has a small subset of telnet. Impressive.