Yeah, I know I can do it through the website - I'm specifically interested in being able to do it through a terminal-based program. Partially because it suits my workflow better, and partially because I enjoy being able to have logs of my conversations that I control.
If you can convince your circle to move to signal, they have a CLI tool.
that's a website, not a TUI
And it's a Google website, which is to say painfully slow - I assumed that this was because I use Firefox right up until I used it on a chromebook and discovered that it still crawled.