also AI agent, agentic
A model running in a loop that decides its next step, calls tools, looks at the results and continues until it reaches a goal or a limit. The model chooses the path, which is what makes an agent flexible and harder to bound than a fixed workflow.
You have done this if
Instead of following a fixed sequence, the assistant chose which systems to query, read the results and asked a follow-up question before answering.
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It is an agent only where the path cannot be drawn in advance; everywhere else it is a workflow with model steps.
On the AI Application map Agent
Read Agent behavior is a loop, not a prompt · Chatbot, workflow or agent: choose by how much autonomy the task can bear