Looks interesting and seems to not make some of the mistakes that other frameworks make (langchain, llamaindex, etc.) I was pretty apprehensive when I looked at your short hand signature API. I'm really not a fan of these custom mini languages, but it looks like it's fairly constrained at the moment and has an expanded form with a sane Python API. My only concern is that the short hand signatures spiral out of control with "features" and we're back to debugging new languages with poor tooling.

If a new language is the correct answer for working with LLMs than I would prefer a real language spec, compiler/interpreter, debugger, and language server before considering adoption. Which is a lot of work ofc and why I'm apprehensive of how it grows.