Important: very much an early release, none of the help messages are properly set up and there's a bunch of code that's not really needed, but it's usable otherwise
If you have go installed, you can
go build -o chatty . && sudo mv ./chatty /bin
Usage is explained when running, but basically
$ chatty -k="your api key" set
$ chatty -n="chatname" new
$ chatty talk
There are some other features, they are all in the help text, just run without any arguments.