This is an absurdly simple Unix domain socket server for fastPunct and NNSplit. Connect to its socket, and then give input like so:

{"c":"fastpunct","i":["hello world"]}

It will respond like so:

{"o":["Hello, world."]}

ennuicastr-fastpunct-daemon.sh is designed to install all dependencies in a virtual environment automatically, so all you need to do to run the service is run that.