Inside Claude Code: How Anthropic Built a 512k‑Line AI Agent with Tools, Memory, and Security
The article dissects Claude Code’s 512,000‑line TypeScript codebase, detailing its modular architecture, fine‑grained tool orchestration, three‑layer memory system, multi‑stage query engine, six‑layer security sandbox, unreleased features like Kairos and Undercover modes, and the engineering practices that turn an AI model into an industrial‑grade digital employee.
