Architect

Oct 5, 2026 · Artificial Intelligence

AI Agent Architecture: The Runtime Chain Connecting Planner, Tool, MCP, Memory & Reflection

This article deconstructs AI agent architecture as a stateful runtime chain—Goal→Plan→Context→Decide→Act→Observe→Verify→State→Next—distinguishing Planner, Tool, MCP, Memory, and Reflection as interconnected layers rather than parallel modules, emphasizing that reliability comes from the harness runtime handling verification, recovery, and context engineering outside the model.