As a heads up, I'm not likely to work on this project anymore.
lspc
lspc is a command-line client for the language server protocol ecosystem.
lspc starts and runs language servers and lets you interact with them as if
they were command line tools.
Installation
$ go get -u github.com/jacobdufault/lspc
$ lspc # prints out help/usage
# Use lspc help <command-name> for more information, ie, lspc help start
Development status
Still under active work. Managing language servers mostly works, but they
cannot yet be easily interacted with.