Any effect you can imagine. It could probably write a DAW if you wanted it to, but a “one-off” script? Easy. I think the best thing is when I tell it something like “it sounds like there is clipping around the 1:03 mark” it will analyze it, find the sign flip in the processor chain, and apply the fix. It’s much faster at this than me.
Note that there needs to be open source libraries and toolings. It can’t do a Dolby Atmos master, for example. So you still need a DAW.