What actually happens when you type a message into Claude Code? The agent loop, 50+ tools, multi-agent orchestration, and unreleased features, mapped straight from the source.
The Agent Loop
From keypress to rendered response, step by step through the source.
Architecture Explorer
Click around the source tree to explore what's inside.
Tool System
Every built-in tool Claude Code can call, sorted by what it does.
Click a tool to see details and source code
Command Catalog
Every slash command available in Claude Code, sorted by what it does.
Debugging & Diagnostics23
Advanced & Experimental23
Click a command to see details and source code