DOCUMENTATION LIBRARY

The Claude Code Library

6 volumes covering every system, tool, and feature. Pick a book from the shelf.

Complete Collection
Core Architecture Vol. I
⚙ Volume I

Core Architecture

main.tsx, QueryEngine, query loop, Tool system

4 Chapters ~800KB
All 45+ Tools Vol. II
🔧 Volume II

All 45+ Tools

File, execution, agent, web, task, control tools

6 Categories 45+ tools
Special Features Vol. III
✨ Volume III

Special Features

Buddy, Dream, KAIROS, Coordinator, ULTRAPLAN, Undercover

6 Systems Internal + Beta
Services Vol. IV
⚡ Volume IV

Services & Infra

API, MCP, Ink, Bridge, Permissions, Security

6 Services 209KB+ sec
CLI Commands Vol. V
>_ Volume V

100+ CLI Commands

Session, dev, config, model, UI commands

5 Categories 100+ cmds
Type System Vol. VI
{T} Volume VI

Types & Patterns

Types, design patterns, 18 feature flags

3 Sections 18 flags

Quick Experiments

Jump straight into hands-on exploration:

🦆 Generate a Buddy Enter any user ID to see your companion 🔒 Permission Simulator Compare Default vs Auto vs Bypass 🛡 Security Tester Test dangerous vs safe commands 🔍 Query Visualizer See how queries detect tools 🌙 Dream Simulator Test 3-gate Dream cycle 📊 Code Stats Live codebase statistics