tmux-llm is an experimental LLM user interface that is:

  - minimal (no chat, no history, no replies, not even an input field)
  - universal (available in all your terminal applications)
  - transparent (the only context sent to an LLM is what you see on the screen)

Basically, you can hit Ctrl+G at any time and get a tmux pop-up with an LLM's reply based on whatever is currently in your terminal. If you want, you can also select a specific part of the terminal contents. That's it.

Clearly, it's quite constrained in what you can get out of the LLM but sometimes constraints can lead to better focus.

I'm still not sure if / how useful it is but I find myself using it from time to time.