Comment by breuleux

> one could be having an agent as a server, where "prompting" is just a command `prompt ...` sent to the agent as a server

Yeah, I prefer something like that (which should be strictly easier to make than these elaborate TUIs). I could also be interested in a shell that supports it natively, e.g. with a syntax such as `-- this is my prompt! it's not necessary to quote stuff`. I'd also enjoy an HTML shell that can output markdown, tables and interactive plots rather than trying to bend a matrix of characters to do these things (as long as it's snappy and reliable). I haven't looked very hard, so these things might already exist.