Cognitive Technology Team

Apr 15, 2026 · Artificial Intelligence

Why Claude Code’s Architecture Keeps Agents Stable: A Deep Dive into Runtime Design

This article dissects Claude Code’s multi‑layered architecture—entry routing, REPL orchestration, query loop, tool runtime, permission system, task management, and extension layers—to reveal how each layer isolates complexity, enabling robust, long‑running AI agents that scale without collapsing under real‑world workloads.