Agents: loops, memory, planning and the Model Context Protocol
How tool-using agents work as a controlled loop, state and memory, planning versus reacting, limits and failure handling, the Model Context Protocol for connecting tools, evaluation, and when a workflow beats an agent.
18 min·Verified 2026-11Pro+50 XP
An agent is a program in which a language model decides what to do next, using tools, until a goal is met. The model is the decision-maker; everything else (loop control, tools, memory, safety) is conventional software you must engineer carefully.
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