Code Generation

1. Sub-Agents — Scaling Beyond a Single Loop # The single-threaded agentic loop is simple and predictable, but it cannot parallelize work. Claude Code addresses this with sub-agents — child agent instances that run their own isolated loops.

Introduction # Claude Code is Anthropic’s terminal-based AI coding agent. On the surface it looks like a CLI that “just talks to Claude,” but under the hood it is a stateful software layer that sits between a stateless language model and your local development environment. The model provides the reasoning; the harness provides the hands, eyes, and workspace.