AI Agent

An agent is given an objective, not a script. It decides what to do, calls tools to do it, observes the result, and adjusts. The word carries two senses: in reinforcement learning it is the entity acting in an environment, while in current product usage it means an LLM wired up to tools and a loop. Both are correct; check which one a document means.

In practice: ‘Find the three cheapest flights and put them in the sheet’ — the agent chooses the steps.