What is an Agent?
An agent is an autonomous entity that uses an LLM as its 'brain' to perceive its environment, reason, and take actions to achieve a goal. Unlike standard Chatbots, agents are proactive.
Why Build vs. Prompt?
In 2026, writing prompts is a basic skill. Engineering agents requires understanding cycles, state management, and tool integration.
Key Concepts:
- Perception: Input data (text, files, web).
- Reasoning: Planning the steps.
- Action: Executing code or calling APIs.
Goal: By the end of this course, you will build agents that don't just talk, but 'do'.