The Agent Harness: An Agent Is More Than a Loop

Today we're diving into the AG2 agent, it's harness, as this plays a crucial role in having a reliable long-term agent.
An agent has moved on from a simple loop around LLM and tool calls. It has memory that spans thousands of turns. It can run tools in parallel, delegate subtasks, and call back to a human. It keeps producing under context pressure. It can be traced, metered, and gated. This post zooms in on that machinery — what the AG2 beta harness gives you, and how to reach for each part.