All terms
Patterns
Agent
An LLM that can plan, call tools, and act in a loop toward a goal.
Definition
In modern AI usage, an agent is a system built around an LLM that can take actions — calling tools or APIs, reading results, and deciding what to do next — in a loop until it achieves a goal. Unlike a single prompt-response, an agent maintains state, plans across multiple steps, and can recover from errors. Frameworks add memory, tool schemas, and orchestration.