Claude Code Unpacked
What actually happens when you type a message into Claude Code? The agent loop, 40+ tools, multi-agent orchestration, and unreleased features, mapped straight from the source.
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01
The Agent Loop
From keypress to rendered response, step by step through the source.
Watch what happens when you send a message to Claude Code
1User Input
src/components/TextInput.tsxUser types a message or pipes input through stdin
● claude-code
$
Keyboard input comes from Ink's TextInput component. In non-interactive mode, it reads from piped stdin instead.
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02
Architecture Explorer
Click around the source tree to explore what's inside.
Tools & Commands
Core Processing
UI Layer
Infrastructure
Support & Utilities
Personality & UX
03
Tool System
Every built-in tool Claude Code can call, sorted by what it does.
File Operations
6 tools
Execution
3 tools
Search & Fetch
3 tools
Agents & Tasks
10 tools
Planning
4 tools
MCP
4 tools
System
6 tools
Experimental
4 tools
Click a tool to see details and source code
05
Command Explorer
86 slash commands. Grouped by when you'd reach for them.
Setup & Config
Daily Workflow
Code Review & Git
Debugging & Diagnostics
Advanced & Experimental