This looks excellent! It's a great interface for two things I'm struggling to make LlamaIndex do: explain and debug multi-step responses for agent flows, and cache queries aggressively. If I can work out how to hook it into my LlamaIndex-based pile, happy days.

Feature/guidance request: how to actually call functions, how to loop on responses to resolve multiple function calls. I've managed to mock a response to get_current_weather using this contraption: https://pasteboard.co/aO9BmHG5qsFt.png . But it's messy and I can't see a way to actually evaluate function calls. And if I involve the Chat Turn node, the message sequences seem to get tangled with each other. Probably I'm holding it wrong!