Well, my reference for a commonly used incorrect definition is “anything that involves using an LLM” so yours is better than that.

But the elements that I think are necessary are 1) goal-oriented processing, 2) ability to use tools, 3) ability to iterate and self-correct. Along with that typically comes 4) self-talk or other hidden context during execution and 5) support for defined personas beyond system or user prompts.

That’s off the top of my head, probably not complete/correct, and definitely meant to be more technical than a non-tech person would need.