How Claude Code Works - Deep Dive into Architecture and Implementation

Explore the architecture and implementation of Claude's code generation capabilities in this comprehensive conference talk that reveals how Anthropic's CLI agent achieves success through radical simplification rather than complex frameworks. Discover the "Master Loop" approach that pairs single-threaded execution with highly capable models, contrasting this streamlined methodology with traditional DAG-based architectures. Learn about the specific internal tools including Bash, FileEdit, and Grep, understand the Todo planning mechanism, and examine the critical role of sandboxing and system prompts in creating reliable production engineering agents. Gain insights into the evolution of coding agents, compare different architectural approaches including the "AI Therapist" problem, and analyze how various agents like Codex, Amp, and Cursor handle context management. Understand the importance of rigorous evaluation tools, explore the future of headless SDKs, and discover key takeaways about building effective AI coding systems through a "give it tools and get out of the way" philosophy that prioritizes model capability over complex orchestration frameworks.