I tried that for a bit, and bounced back to just using claude code in a terminal. It was a little bit janky in emacs, and didn't have any features that justified not just running a separate terminal window (for me, at the time I checked it out).
I'm wondering if this project will work. It does feel a shame that it doesn't work with the existing mcp.el package[0], but I never got around to setting that up anyways. I wonder if it's a limitation of the package? or not wanting another dependency?
(in addition I've only really played around with claude code a little because I haven't gotten it to a place where I can make it write code I'd consider acceptable for my day job.)