<picture>
  <source media="(prefers-color-scheme: dark)" srcset="resources/logos/claude-howto-logo-dark.svg">
  <img alt="Claude How To" src="resources/logos/claude-howto-logo.svg">
</picture>

# Claude How To

> A visual, example-driven guide to Claude Code — from basic concepts to advanced agents, with copy-paste templates that bring immediate value.

## Why This Guide?

This project complements [Anthropic's official documentation](https://docs.anthropic.com/en/docs/claude-code) with a different approach:

| | Official Docs | This Guide |
|--|---------------|------------|
| **Format** | Reference documentation | Visual tutorials with diagrams |
| **Depth** | Feature descriptions | How it works under the hood |
| **Examples** | Basic snippets | Production-ready templates you can use immediately |
| **Structure** | Feature-organized | Progressive learning path (beginner → advanced) |
| **Onboarding** | Self-directed | Guided roadmap with time estimates |

**What you'll find here:**
- Mermaid diagrams explaining how each feature works
- Ready-to-use configurations you can copy into your project
- Real-world examples with context and best practices
- Clear progression from `/help` to building custom agents
- Troubleshooting guides based on common issues

---

## Table of Contents

- [Why This Guide?](#why-this-guide)
- [Feature Catalog](#-feature-catalog)
- [Quick Navigation](#quick-navigation)
- [Learning Path](#-learning-path)
- [Quick Reference](#-quick-reference-choose-your-features)
- [Getting Started](#-getting-started)
- **Features**
  - [01. Slash Commands](#01-slash-commands)
  - [02. Memory](#02-memory)
  - [03. Skills](#03-skills)
  - [04. Subagents](#04-subagents)
  - [05. MCP Protocol](#05-mcp-protocol)
  - [06. Hooks](#06-hooks)
  - [07. Plugins](#07-plugins)
  - [08. Checkpoints](#08-checkpoints-and-rewind)
  - [09. Advanced Features](#09-advanced-features)
  - [10. CLI Reference](#10-cli-reference)
- [Directory Structure](#directory-structure)
- [Installation Quick Reference](#installation-quick-reference)
- [Example Workflows](#example-workflows)
- [Best Practices](#best-practices)
- [Troubleshooting](#troubleshooting)
- [Testing](#testing)
- [Additional Resources](#additional-resources)
- [Contributing](#contributing)
- [EPUB Generation](#epub-generation)
- [Contributors](#contributors)
- [Star History](#star-history)

---

## Feature Catalog

**Looking for a quick reference?** Check out our comprehensive **[Feature Catalog](CATALOG.md)** for:

- All slash commands (built-in and custom) with descriptions
- Sub-agents and their capabilities
- Skills with auto-invocation triggers
- Plugins with components and installation commands
- MCP servers for external integrations
- Hooks for event-driven automation
- One-command installation for each feature

**[View Full Catalog](CATALOG.md)**

---

## Quick Navigation

| Feature | Description | Folder |
|---------|-------------|--------|
| **Feature Catalog** | Complete reference with installation commands | [CATALOG.md](CATALOG.md) |
| **Slash Commands** | User-invoked shortcuts | [01-slash-commands/](01-slash-commands/) |
| **Memory** | Persistent context | [02-memory/](02-memory/) |
| **Skills** | Reusable capabilities | [03-skills/](03-skills/) |
| **Subagents** | Specialized AI assistants | [04-subagents/](04-subagents/) |
| **MCP Protocol** | External tool access | [05-mcp/](05-mcp/) |
| **Hooks** | Event-driven automation | [06-hooks/](06-hooks/) |
| **Plugins** | Bundled features | [07-plugins/](07-plugins/) |
| **Checkpoints** | Session snapshots & rewind | [08-checkpoints/](08-checkpoints/) |
| **Advanced Features** | Planning, thinking, background tasks | [09-advanced-features/](09-advanced-features/) |
| **CLI Reference** | Commands, flags, and options | [10-cli/](10-cli/) |
| **Blog Posts** | Real-world usage examples | [Blog Posts](https://medium.com/@luongnv89) |

---

## 📚 Learning Path

**Not sure where to start?** Take the [Self-Assessment Quiz](LEARNING-ROADMAP.md#-find-your-level) to find your recommended path, or run `/self-assessment` in Claude Code for an interactive version.

> **Built-in skills**: This repo includes two interactive skills you can use directly in Claude Code:
> - `/self-assessment` — Evaluate your overall Claude Code proficiency and get a personalized learning path
> - `/lesson-quiz [lesson]` — Test your understanding of any specific lesson (e.g., `/lesson-quiz hooks`)

| Order | Feature | Level | Time | Recommended For |
|-------|---------|-------|------|-----------------|
| **1** | [Slash Commands](01-slash-commands/) | ⭐ Beginner | 30 min | Level 1 start |
| **2** | [Memory](02-memory/) | ⭐⭐ Beginner+ | 45 min | Level 1 |
| **3** | [Checkpoints](08-checkpoints/) | ⭐⭐ Intermediate | 45 min | Level 1 |
| **4** | [CLI Basics](10-cli/) | ⭐⭐ Beginner+ | 30 min | Level 1 |
| **5** | [Skills](03-skills/) | ⭐⭐ Intermediate | 1 hour | Level 2 start |
| **6** | [Hooks](06-hooks/) | ⭐⭐ Intermediate | 1 hour | Level 2 |
| **7** | [MCP](05-mcp/) | ⭐⭐⭐ Intermediate+ | 1 hour | Level 2 |
| **8** | [Subagents](04-subagents/) | ⭐⭐⭐ Intermediate+ | 1.5 hours | Level 2 |
| **9** | [Advanced](09-advanced-features/) | ⭐⭐⭐⭐⭐ Advanced | 2-3 hours | Level 3 start |
| **10** | [Plugins](07-plugins/) | ⭐⭐⭐⭐ Advanced | 2 hours | Level 3 |
| **11** | [CLI Mastery](10-cli/) | ⭐⭐⭐ Advanced | 1 hour | Level 3 |

**Total**: ~11-13 hours | 📖 **[Complete Learning Roadmap →](LEARNING-ROADMAP.md)**

---

## 🎯 Quick Reference: Choose Your Features

### Feature Comparison

| Feature | Invocation | Persistence | Best For |
|---------|-----------|------------|----------|
| **Slash Commands** | Manual (`/cmd`) | Session only | Quick shortcuts |
| **Memory** | Auto-loaded | Cross-session | Long-term learning |
| **Skills** | Auto-invoked | Filesystem | Automated workflows |
| **Subagents** | Auto-delegated | Isolated context | Task distribution |
| **MCP Protocol** | Auto-queried | Real-time | Live data access |
| **Hooks** | Event-triggered | Configured | Automation & validation |
| **Plugins** | One command | All features | Complete solutions |
| **Checkpoints** | Manual/Auto | Session-based | Safe experimentation |
| **Planning Mode** | Manual/Auto | Plan phase | Complex implementations |
| **Background Tasks** | Manual | Task duration | Long-running operations |
| **CLI Reference** | Terminal commands | Session/Script | Automation & scripting |

### Use Case Matrix

| Use Case | Recommended Features |
|----------|---------------------|
| **Team Onboarding** | Memory + Slash Commands + Plugins |
| **Code Quality** | Subagents + Skills + Memory + Hooks |
| **Documentation** | Skills + Subagents + Plugins |
| **DevOps** | Plugins + MCP + Hooks + Background Tasks |
| **Security Review** | Subagents + Skills + Hooks (read-only mode) |
| **API Integration** | MCP + Memory |
| **Quick Tasks** | Slash Commands |
| **Complex Projects** | All Features + Planning Mode |
| **Refactoring** | Checkpoints + Planning Mode + Hooks |
| **Learning/Experimentation** | Checkpoints + Extended Thinking + Permission Mode |
| **CI/CD Automation** | CLI Reference + Hooks + Background Tasks |
| **Performance Optimization** | Planning Mode + Checkpoints + Background Tasks |
| **Script Automation** | CLI Reference + Hooks + MCP |
| **Batch Processing** | CLI Reference + Background Tasks |

---

## ⚡ Getting Started

### 15 Minutes - First Steps
```bash
# Copy your first slash command
cp 01-slash-commands/optimize.md .claude/commands/

# Try it!
# In Claude Code: /optimize
```

### 1 Hour - Essential Setup
```bash
# 1. Slash commands (15 min)
cp 01-slash-commands/*.md .claude/commands/

# 2. Project memory (15 min)
cp 02-memory/project-CLAUDE.md ./CLAUDE.md

# 3. Install a skill (15 min)
cp -r 03-skills/code-review ~/.claude/skills/

# 4. Try them together (15 min)
# See how they work in harmony!
```

### Weekend - Full Setup
- **Day 1**: Slash Commands, Memory, Skills, Hooks
- **Day 2**: Subagents, MCP integration, Plugins
- **Result**: Complete Claude Code power user setup

📖 **[Detailed milestones and exercises →](LEARNING-ROADMAP.md)**

---

## 01. Slash Commands

**Location**: [01-slash-commands/](01-slash-commands/)

**What**: User-invoked shortcuts stored as Markdown files

**Examples**:
- `optimize.md` - Code optimization analysis
- `pr.md` - Pull request preparation
- `generate-api-docs.md` - API documentation generator

**Installation**:
```bash
cp 01-slash-commands/*.md /path/to/project/.claude/commands/
```

**Usage**:
```
/optimize
/pr
/generate-api-docs
```

**Learn More**: [Discovering Claude Code Slash Commands](https://medium.com/@luongnv89/discovering-claude-code-slash-commands-cdc17f0dfb29)

---

## 02. Memory

**Location**: [02-memory/](02-memory/)

**What**: Persistent context across sessions

**Examples**:
- `project-CLAUDE.md` - Team-wide project standards
- `directory-api-CLAUDE.md` - Directory-specific rules
- `personal-CLAUDE.md` - Personal preferences

**Installation**:
```bash
# Project memory
cp 02-memory/project-CLAUDE.md /path/to/project/CLAUDE.md

# Directory memory
cp 02-memory/directory-api-CLAUDE.md /path/to/project/src/api/CLAUDE.md

# Personal memory
cp 02-memory/personal-CLAUDE.md ~/.claude/CLAUDE.md
```

**Usage**: Automatically loaded by Claude

---

## 03. Skills

**Location**: [03-skills/](03-skills/)

**What**: Reusable, auto-invoked capabilities with instructions and scripts

**Examples**:
- `code-review/` - Comprehensive code review with scripts
- `brand-voice/` - Brand voice consistency checker
- `doc-generator/` - API documentation generator

**Installation**:
```bash
# Personal skills
cp -r 03-skills/code-review ~/.claude/skills/

# Project skills
cp -r 03-skills/code-review /path/to/project/.claude/skills/
```

**Usage**: Automatically invoked when relevant

---

## 04. Subagents

**Location**: [04-subagents/](04-subagents/)

**What**: Specialized AI assistants with isolated contexts and custom prompts

**Examples**:
- `code-reviewer.md` - Comprehensive code quality analysis
- `test-engineer.md` - Test strategy and coverage
- `documentation-writer.md` - Technical documentation
- `secure-reviewer.md` - Security-focused review (read-only)
- `implementation-agent.md` - Full feature implementation

**Installation**:
```bash
cp 04-subagents/*.md /path/to/project/.claude/agents/
```

**Usage**: Automatically delegated by main agent

---

## 05. MCP Protocol

**Location**: [05-mcp/](05-mcp/)

**What**: Model Context Protocol for accessing external tools and APIs

**Examples**:
- `github-mcp.json` - GitHub integration
- `database-mcp.json` - Database queries
- `filesystem-mcp.json` - File operations
- `multi-mcp.json` - Multiple MCP servers

**Installation**:
```bash
# Set environment variables
export GITHUB_TOKEN="your_token"
export DATABASE_URL="postgresql://..."

# Add MCP server via CLI
claude mcp add github -- npx -y @modelcontextprotocol/server-github

# Or add to project .mcp.json manually (see 05-mcp/ for examples)
```

**Usage**: MCP tools are automatically available to Claude once configured

---

## 06. Hooks

**Location**: [06-hooks/](06-hooks/)

**What**: Event-driven shell commands that execute automatically in response to Claude Code events

**Examples**:
- `format-code.sh` - Auto-format code before writing
- `pre-commit.sh` - Run tests before commits
- `security-scan.sh` - Scan for security issues
- `log-bash.sh` - Log all bash commands
- `validate-prompt.sh` - Validate user prompts
- `notify-team.sh` - Send notifications on events

**Installation**:
```bash
mkdir -p ~/.claude/hooks
cp 06-hooks/*.sh ~/.claude/hooks/
chmod +x ~/.claude/hooks/*.sh
```

Configure hooks in `~/.claude/settings.json`:
```json
{
  "hooks": {
    "PreToolUse": [{
      "matcher": "Write",
      "hooks": ["~/.claude/hooks/format-code.sh"]
    }],
    "PostToolUse": [{
      "matcher": "Write",
      "hooks": ["~/.claude/hooks/security-scan.sh"]
    }]
  }
}
```

**Usage**: Hooks execute automatically on events

**Hook Types**:
- **Tool Hooks**: `PreToolUse:*`, `PostToolUse:*`
- **Session Hooks**: `Stop`, `SubagentStop`, `SubagentStart`
- **Lifecycle Hooks**: `Notification`, `ConfigChange`, `WorktreeCreate`, `WorktreeRemove`

---

## 07. Plugins

**Location**: [07-plugins/](07-plugins/)

**What**: Bundled collections of commands, agents, MCP, and hooks

**Examples**:
- `pr-review/` - Complete PR review workflow
- `devops-automation/` - Deployment and monitoring
- `documentation/` - Documentation generation

**Installation**:
```bash
/plugin install pr-review
/plugin install devops-automation
/plugin install documentation
```

**Usage**: Use bundled slash commands and features

---

## 08. Checkpoints and Rewind

**Location**: [08-checkpoints/](08-checkpoints/)

**What**: Save conversation state and rewind to previous points to explore different approaches

**Key Concepts**:
- **Checkpoint**: Snapshot of conversation state
- **Rewind**: Return to previous checkpoint
- **Branch Point**: Explore multiple approaches from same checkpoint

**Usage**:
```
# Checkpoints are created automatically with every user prompt
# To rewind, press Esc twice or use:
/rewind

# Then choose from five options:
# 1. Restore code and conversation
# 2. Restore conversation
# 3. Restore code
# 4. Summarize from here
# 5. Never mind
```

**Use Cases**:
- Try different implementation approaches
- Recover from mistakes
- Safe experimentation
- Compare alternative solutions
- A/B testing different designs

**Example Workflow**:
```
1. Work normally (checkpoints are created automatically)
2. Try experimental approach
3. If it works: Continue
4. If it fails: Press Esc+Esc or /rewind to go back
```

---

## 09. Advanced Features

**Location**: [09-advanced-features/](09-advanced-features/)

**What**: Advanced capabilities for complex workflows and automation

### Planning Mode

Create detailed implementation plans before coding:
```
User: /plan Implement user authentication system

Claude: [Creates comprehensive step-by-step plan]

User: Approve and proceed
```

**Benefits**: Clear roadmap, time estimates, risk assessment

### Extended Thinking

Deep reasoning for complex problems. Toggle with `Alt+T` / `Option+T`, or set `MAX_THINKING_TOKENS` environment variable:
```bash
# Toggle in-session: press Alt+T (Option+T on macOS)

# Or set via environment variable
MAX_THINKING_TOKENS=10000 claude

# Then ask complex questions
User: Should we use microservices or monolith?
Claude: [Analyzes trade-offs systematically with extended reasoning]
```

**Benefits**: Better architectural decisions, thorough analysis

### Background Tasks

Run long operations without blocking:
```
User: Run tests in background

Claude: Started bg-1234, you can continue working

[Later] Test results: 245 passed, 3 failed
```

**Benefits**: Parallel development, no waiting

### Permission Modes

Control what Claude can do:
- **`default`**: Standard permissions with confirmation prompts
- **`acceptEdits`**: Auto-accept file edits, confirm other actions
- **`plan`**: Analysis and planning only, no modifications
- **`dontAsk`**: Accept all actions without confirmation
- **`bypassPermissions`**: Skip all permission checks (dangerous)

```bash
claude --permission-mode plan          # Code review mode
claude --permission-mode acceptEdits   # Learning mode
claude --permission-mode default       # Standard mode
```

### Headless Mode

Run Claude Code in CI/CD and automation:
```bash
claude -p "Run tests and generate report"
```

**Use Cases**: CI/CD, automated reviews, batch processing

### Session Management

Manage multiple work sessions:
```bash
/resume                          # Resume a previous session interactively
/rename                          # Rename the current session
/fork                            # Fork the current session
claude -c                        # Continue the most recent session
claude -r "session"              # Resume a session matching the query
```

### Interactive Features

**Keyboard Shortcuts**: Ctrl+R (search), Tab (complete), ↑/↓ (history)

**Command History**: Access previous commands

**Multi-line Input**: Complex prompts across multiple lines

### Configuration

Customize Claude Code behavior in `~/.claude/settings.json`:
```json
{
  "permissions": {
    "allow": ["Read", "Glob", "Grep", "Bash(git *)"],
    "deny": ["Bash(rm -rf *)"]
  },
  "hooks": {
    "PreToolUse": [{
      "matcher": "Write",
      "hooks": ["~/.claude/hooks/format-code.sh"]
    }]
  },
  "env": {
    "MAX_THINKING_TOKENS": "10000"
  }
}
```

See [config-examples.json](09-advanced-features/config-examples.json) for complete configurations.

---

## 10. CLI Reference

**Location**: [10-cli/](10-cli/)

**What**: Complete command-line interface reference for Claude Code

**Key Areas**:
- CLI commands (`claude`, `claude -p`, `claude -c`, `claude -r`)
- Core flags (print mode, continue, resume, version)
- Model & configuration (`--model`, `--agents`)
- System prompt customization
- Tool & permission management
- Output formats (text, JSON, stream-JSON)
- MCP configuration
- Session management

**Quick Examples**:
```bash
# Interactive mode
claude "explain this project"

# Print mode (non-interactive)
claude -p "review this code"

# Process file content
cat error.log | claude -p "explain this error"

# JSON output for scripts
claude -p --output-format json "list functions"

# Resume session
claude -r "feature-auth" "continue implementation"
```

**Use Cases**:
- CI/CD pipeline integration
- Script automation and piping
- Batch processing
- Multi-session workflows
- Custom agent configurations

---

## Directory Structure

```

├── 01-slash-commands/
│   ├── optimize.md
│   ├── pr.md
│   ├── generate-api-docs.md
│   └── README.md
├── 02-memory/
│   ├── project-CLAUDE.md
│   ├── directory-api-CLAUDE.md
│   ├── personal-CLAUDE.md
│   └── README.md
├── 03-skills/
│   ├── code-review/
│   │   ├── SKILL.md
│   │   ├── scripts/
│   │   └── templates/
│   ├── brand-voice/
│   │   ├── SKILL.md
│   │   └── templates/
│   ├── doc-generator/
│   │   ├── SKILL.md
│   │   └── generate-docs.py
│   └── README.md
├── 04-subagents/
│   ├── code-reviewer.md
│   ├── test-engineer.md
│   ├── documentation-writer.md
│   ├── secure-reviewer.md
│   ├── implementation-agent.md
│   └── README.md
├── 05-mcp/
│   ├── github-mcp.json
│   ├── database-mcp.json
│   ├── filesystem-mcp.json
│   ├── multi-mcp.json
│   └── README.md
├── 06-hooks/
│   ├── format-code.sh
│   ├── pre-commit.sh
│   ├── security-scan.sh
│   ├── log-bash.sh
│   ├── validate-prompt.sh
│   ├── notify-team.sh
│   └── README.md
├── 07-plugins/
│   ├── pr-review/
│   ├── devops-automation/
│   ├── documentation/
│   └── README.md
├── 08-checkpoints/
│   ├── checkpoint-examples.md
│   └── README.md
├── 09-advanced-features/
│   ├── config-examples.json
│   ├── planning-mode-examples.md
│   └── README.md
├── 10-cli/
│   └── README.md
└── README.md (this file)
```

---

## Installation Quick Reference

```bash
# Slash Commands
cp 01-slash-commands/*.md .claude/commands/

# Memory
cp 02-memory/project-CLAUDE.md ./CLAUDE.md

# Skills
cp -r 03-skills/code-review ~/.claude/skills/

# Subagents
cp 04-subagents/*.md .claude/agents/

# MCP
export GITHUB_TOKEN="token"
claude mcp add github -- npx -y @modelcontextprotocol/server-github

# Hooks
mkdir -p ~/.claude/hooks
cp 06-hooks/*.sh ~/.claude/hooks/
chmod +x ~/.claude/hooks/*.sh

# Plugins
/plugin install pr-review

# Checkpoints (auto-enabled, configure in settings)
# See 08-checkpoints/README.md

# Advanced Features (configure in settings)
# See 09-advanced-features/config-examples.json

# CLI Reference (no installation needed)
# See 10-cli/README.md for usage examples
```

---

## Example Workflows

### 1. Complete Code Review Workflow

```markdown
# Uses: Slash Commands + Subagents + Memory + MCP

User: /review-pr

Claude:
1. Loads project memory (coding standards)
2. Fetches PR via GitHub MCP
3. Delegates to code-reviewer subagent
4. Delegates to test-engineer subagent
5. Synthesizes findings
6. Provides comprehensive review
```

### 2. Automated Documentation

```markdown
# Uses: Skills + Subagents + Memory

User: "Generate API documentation for the auth module"

Claude:
1. Loads project memory (doc standards)
2. Detects doc generation request
3. Auto-invokes doc-generator skill
4. Delegates to api-documenter subagent
5. Creates comprehensive docs with examples
```

### 3. DevOps Deployment

```markdown
# Uses: Plugins + MCP + Hooks

User: /deploy production

Claude:
1. Runs pre-deploy hook (validates environment)
2. Delegates to deployment-specialist subagent
3. Executes deployment via Kubernetes MCP
4. Monitors progress
5. Runs post-deploy hook (health checks)
6. Reports status
```

---

## Best Practices

### Do's ✅
- Start simple with slash commands
- Add features incrementally
- Use memory for team standards
- Test configurations locally first
- Document custom implementations
- Version control project configurations
- Share plugins with team

### Don'ts ❌
- Don't create redundant features
- Don't hardcode credentials
- Don't skip documentation
- Don't over-complicate simple tasks
- Don't ignore security best practices
- Don't commit sensitive data

---

## Troubleshooting

### Feature Not Loading
1. Check file location and naming
2. Verify YAML frontmatter syntax
3. Check file permissions
4. Review Claude Code version compatibility

### MCP Connection Failed
1. Verify environment variables
2. Check MCP server installation
3. Test credentials
4. Review network connectivity

### Subagent Not Delegating
1. Check tool permissions
2. Verify agent description clarity
3. Review task complexity
6. Test agent independently

---

## Testing

This project includes comprehensive automated testing to ensure code quality and reliability.

### Testing Overview

- **Unit Tests**: Python tests using pytest (Python 3.10, 3.11, 3.12)
- **Code Quality**: Linting and formatting with Ruff
- **Security**: Vulnerability scanning with Bandit
- **Type Checking**: Static type analysis with mypy
- **Build Verification**: EPUB generation testing
- **Coverage Tracking**: Codecov integration

### Running Tests Locally

```bash
# Install development dependencies
uv pip install -r requirements-dev.txt

# Run all unit tests
pytest scripts/tests/ -v

# Run tests with coverage report
pytest scripts/tests/ -v --cov=scripts --cov-report=html

# Run code quality checks
ruff check scripts/
ruff format --check scripts/

# Run security scan
bandit -c pyproject.toml -r scripts/ --exclude scripts/tests/

# Run type checking
mypy scripts/ --ignore-missing-imports
```

### Automated Testing on GitHub

Tests run automatically on:
- Every push to `main` or `develop` branches
- Every pull request to `main`

View test results in the GitHub Actions tab or check the [TESTING.md](.github/TESTING.md) guide for detailed information.

### Writing Tests

When contributing, please include tests for new functionality:

1. **Write tests** in `scripts/tests/test_*.py`
2. **Run tests locally** to verify they pass
3. **Check coverage** with `pytest --cov=scripts`
4. **Submit with PR** - tests are required for all contributions

For detailed testing guidelines, see [TESTING.md](.github/TESTING.md).

---

## Additional Resources

- [Claude Code Documentation](https://docs.anthropic.com/en/docs/claude-code)
- [MCP Protocol Specification](https://modelcontextprotocol.io)
- [Skills Repository](https://github.com/luongnv89/skills) - Collection of ready-to-use skills
- [Anthropic Cookbook](https://github.com/anthropics/anthropic-cookbook)
- [Boris Cherny's Claude Code Workflow](https://x.com/bcherny/status/2007179832300581177) - The creator of Claude Code shares his systematized workflow: parallel agents, shared CLAUDE.md, Plan mode, slash commands, subagents, and verification hooks for autonomous long-running sessions. Key insights include turning recurring workflows into reusable commands and wiring Claude into team tools (GitHub, Slack, BigQuery, Sentry) for end-to-end work with feedback loops.

---

## Contributing

Found an issue or want to contribute an example? We'd love your help!

**Please read [CONTRIBUTING.md](CONTRIBUTING.md) for detailed guidelines on:**
- Types of contributions (examples, docs, features, bugs, feedback)
- How to set up your development environment
- Directory structure and how to add content
- Writing guidelines and best practices
- Commit and PR process

**Our Community Standards:**
- [CODE_OF_CONDUCT.md](CODE_OF_CONDUCT.md) - How we treat each other
- [SECURITY.md](SECURITY.md) - Security policy and vulnerability reporting

### Reporting Security Issues

If you discover a security vulnerability, please report it responsibly:

1. **Use GitHub Private Vulnerability Reporting**: https://github.com/luongnv89/claude-howto/security/advisories
2. **Or read** [.github/SECURITY_REPORTING.md](.github/SECURITY_REPORTING.md) for detailed instructions
3. **Do NOT** open a public issue for security vulnerabilities

Security issues are taken seriously and will be addressed promptly. See [SECURITY.md](SECURITY.md) for our full security policy.

Quick start:
1. Fork and clone the repository
2. Create a descriptive branch (`add/feature-name`, `fix/bug`, `docs/improvement`)
3. Make your changes following the guidelines
4. Submit a pull request with a clear description

**Need help?** Open an issue or discussion, and we'll guide you through the process.

---

## License

This project is licensed under the MIT License - see [LICENSE](LICENSE) file for details.

You are free to:
- Use this guide and examples in your projects
- Modify and adapt the content
- Share and distribute
- Use for commercial purposes

The only requirement is to include a copy of the license and copyright notice.

---

## EPUB Generation

Want to read this guide offline? Generate an EPUB ebook:

```bash
uv run scripts/build_epub.py
```

This creates `claude-howto-guide.epub` with all content, including rendered Mermaid diagrams.

See [scripts/README.md](scripts/README.md) for more options.

---

## Contributors

Thanks to everyone who has contributed to this project!

| Contributor | PRs |
|-------------|-----|
| [wjhrdy](https://github.com/wjhrdy) | [#1 - add a tool to create an epub](https://github.com/luongnv89/claude-howto/pull/1) |
| [VikalpP](https://github.com/VikalpP) | [#7 - fix(docs): Use tilde fences for nested code blocks in concepts guide](https://github.com/luongnv89/claude-howto/pull/7) |

---

## Star History

[![Star History Chart](https://api.star-history.com/svg?repos=luongnv89/claude-howto&type=Date)](https://star-history.com/#luongnv89/claude-howto&Date)

---

**Last Updated**: February 2026
**Claude Code Version**: 2.1+
**Compatible Models**: Claude Sonnet 4.6, Claude Opus 4.6, Claude Haiku 4.5