Definition
AI Agent
An AI agent is a system that uses a model, instructions and tools to take steps toward a goal on behalf of a user or workflow.
Short definition
An AI agent is a software system that can take actions toward a goal. It usually combines a model, instructions, memory or context, and access to tools such as search, databases, code execution or business applications.
How it works
The agent receives a goal, decides the next step, uses a tool if needed, observes the result and continues. Some agents only suggest actions; others execute them directly. The more power an agent has, the more important permissions and logs become.
Example
An internal research agent can search documents, summarize findings, compare sources and produce a short report. A higher-risk agent might also create tickets, send messages or update records, which requires stronger safeguards.
Why it matters
AI agents are important because they move AI from single responses to workflow automation. They can save time, but they also create new risk if they act on bad assumptions. Good agents are narrow, observable and easy to interrupt.