ncdc is not available for Debian. I have the option of using the static binary provided by the website, or I can compile it myself.
Required dependencies under Stretch:
libbz2-dev
libncurses-dev
libz-dev
libglib2.0-dev
libgnutls28-dev
libsqlite3-dev
libncursesw5-dev
…then ./configure && make && su -c make\ install