I've built some tools using AI. A custom GUI that has "copy context" and "copy image" buttons, to make prompting easy, and the camera position is persisted to disk on each change so that the agent can run a command to get a screenshot of it.

I'm thinking about inlining an AI chat window directly - I guess I might fire off a prompt to do that right now.

Personally both, i use openscad with opencode, and paste images but it is pretty often the modell decides by itself it wants to see a render and uses the render shell commands to get a image to look at.