I think it's a little misleading to say it's compatible with OpenAI because I expect function or tool calling when you say that.

It's nice that you have the role and content thing but that was always fairly trivial to implement.

When it gets to agents you do need to execute actions. In the agent hosting system I started, I included a scripting engine, which makes me think that maybe I need to set up security and permissions for the agent system and just let it run code. Which is what I started.

So I guess I am not sure I really need the function/tool calling. But if I see a bunch of people actually am standardizing on tool calls then maybe I need it in my framework just because it will be expected. Even if I have arbitrary script execution.