📖 Reference Documentation

Complete technical reference documentation for Claude Code, including API specifications, command references, and configuration options.

🎯 Purpose

This section contains factual, lookup-style reference documentation for Claude Code. It focuses on technical specifications, API documentation, command references, and configuration details rather than conceptual guides or tutorials.

📚 Core Reference Documents

If you’re new or need to find the most critical information, start here.

• CLI Reference: Everything you need to install, configure, and use the command-line interface.
• Configuration Reference: A complete guide to all settings in CLAUDE.md, local settings, and environment variables.
• API Reference: Full technical details for the TypeScript SDK, including all types and methods.

📚 Reference Documents

🔧 API Reference

• API Reference - Complete API documentation including types, methods, and examples

💻 Commands Reference

• Commands Reference - Comprehensive CLI commands and options
• Claude Code CLI Reference - Complete CLI installation, configuration, and usage guide

⚙️ Configuration Reference

• Configuration Reference - All configuration options for settings, hooks, and environment

📋 Project Templates

• Project Templates - Ready-to-use templates for common scenarios

📋 Quick Reference

Available Models

• claude-sonnet-4-20250514 - Default balanced model
• claude-haiku-4-20250514 - Faster, lightweight model
• claude-opus-4-20250514 - Most capable model

Permission Modes

• strict - Requires explicit confirmation for all operations
• cautious - Asks for confirmation on destructive operations (default)
• relaxed - Minimal confirmations

Key Environment Variables

ANTHROPIC_API_KEY       # API authentication
CLAUDE_MODEL           # Override default model
CLAUDE_PERMISSION_MODE # Override permission mode
CLAUDE_DEBUG          # Enable debug logging

This reference section is maintained for accuracy and completeness. For conceptual explanations and tutorials, see the Documentation section.

🧭 Explore Reference

• Getting Started: For a step-by-step walkthrough, see the Quickstart Guide.
• Core Concepts: To understand the “why” behind the features, explore the Core Features.
• Development Patterns: For best practices and advanced techniques, visit the Development Guides.
• Integrations: To connect Claude to other tools, check out the Integrations Hub.