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docs: add complete Claude Code ultimate guide content

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- Add comprehensive guide (4000+ lines) covering all Claude Code features
- Add printable cheatsheet for daily reference
- Add PDF versions (NotebookLM podcast, Kimi export)
- Update README with author context, inspiration sources, and contact info
- Change license from MIT to CC BY-SA 4.0 for content sharing

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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# The Ultimate Claude Code Guide
> From zero to power user — a comprehensive, self-contained guide to mastering Claude Code.
[![License: CC BY-SA 4.0](https://img.shields.io/badge/License-CC%20BY--SA%204.0-lightgrey.svg)](https://creativecommons.org/licenses/by-sa/4.0/)
**Author**: [Florian BRUNIAUX](https://github.com/FlorianBruniaux) | Founding Engineer [@Méthode Aristote](https://methode-aristote.fr)
**Contact**: [LinkedIn](https://www.linkedin.com/in/florian-bruniaux-43408b83/)
**Written with**: Claude (Anthropic)
---
## About This Guide
This guide is the result of **several months of daily practice and research** with Claude Code. I don't claim to be an "expert" — I'm simply sharing what I've learned along the way, humbly hoping to help my peers and evangelize good practices in AI-assisted development.
A significant source of inspiration for this work was [Claudelog.com](https://claudelog.com/), which I highly recommend for anyone wanting to go deeper.
If you find value in this guide, have questions, or want to discuss Claude Code practices, feel free to reach out on [LinkedIn](https://www.linkedin.com/in/florian-bruniaux-43408b83/).
---
## What's Inside
| File | Description | Reading Time |
|------|-------------|--------------|
| [`english-ultimate-claude-code-guide.md`](./english-ultimate-claude-code-guide.md) | Complete guide (4000+ lines) | ~2.5 hours |
| [`cheatsheet-en.md`](./cheatsheet-en.md) | 1-page printable daily reference | 5 minutes |
| [`claude-code-ultimate-guide_notebooklm.pdf`](./claude-code-ultimate-guide_notebooklm.pdf) | Audio Deep Dive (NotebookLM podcast) | ~1 hour |
| [`claude-code-ultimate-guide_kimi.pdf`](./claude-code-ultimate-guide_kimi.pdf) | PDF version (Kimi export) | ~2.5 hours |
---
## Guide Overview
### 1. Quick Start (Day 1)
Installation, first workflow, essential commands, permission modes.
### 2. Core Concepts
- **Context Management** — The most critical concept (zones, recovery, poisoning)
- **Plan Mode** — Safe exploration before changes
- **Rewind** — Undo mistakes safely
- **Mental Model** — How Claude sees your codebase
### 3. Configuration
- `CLAUDE.md` files (global, project, local)
- The `.claude/` folder structure
- Settings & permissions
- Precedence rules
### 4. Agents
Create specialized AI personas for specific tasks:
- Code reviewer, debugger, backend architect
- Tool SEO for better agent discovery
- Multi-agent orchestration patterns
### 5. Skills
Reusable knowledge modules:
- Security Guardian (OWASP, secrets management)
- TDD (Red-Green-Refactor cycle)
- Creating your own skills
### 6. Commands
Custom slash commands:
- `/commit`, `/pr`, problem framer
- Variable interpolation with `$ARGUMENTS`
### 7. Hooks
Event-driven automation:
- Security blockers (pre-tool use)
- Auto-formatters (post-tool use)
- Context enrichers (prompt submit)
- Activity logging
### 8. MCP Servers
External tool integrations:
- **Serena** — Semantic code navigation
- **Context7** — Library documentation
- **Sequential** — Structured reasoning
- **Playwright** — Browser automation
- **Postgres** — Database queries
### 9. Advanced Patterns
- The Trinity (Plan + Think + Agents)
- CI/CD & IDE integration
- Tight feedback loops
- Todo as instruction mirrors
- Vibe coding & skeleton projects
- Batch operations
### 10. Reference
Commands table, keyboard shortcuts, troubleshooting, checklists.
### Appendix
Ready-to-use templates for agents, skills, commands, hooks, settings, and prompts.
---
## Quick Start
```bash
# Install Claude Code
curl -fsSL https://claude.ai/install.sh | sh
# Start in your project
cd your-project
claude
```
### The 7 Commands You Need
| Command | Action |
|---------|--------|
| `/help` | Show all commands |
| `/status` | Check context usage |
| `/compact` | Compress context (>70%) |
| `/clear` | Fresh start |
| `/plan` | Safe read-only mode |
| `/rewind` | Undo changes |
| `Ctrl+C` | Cancel operation |
### Context Management (Critical!)
| Context % | Action |
|-----------|--------|
| 0-50% | Work freely |
| 50-70% | Be selective |
| 70-90% | `/compact` now |
| 90%+ | `/clear` required |
---
## The Golden Rules
1. **Always review diffs** before accepting changes
2. **Use `/compact`** before context gets critical (>70%)
3. **Be specific** in requests (WHAT, WHERE, HOW, VERIFY)
4. **Start with Plan Mode** for complex/risky tasks
5. **Create CLAUDE.md** for every project
---
## Who Is This For?
- **Beginners**: Start with Quick Start (15 min) → be productive immediately
- **Intermediate**: Deep dive into Configuration, Agents, Skills
- **Power Users**: Advanced Patterns, MCP orchestration, CI/CD integration
---
## Contributing
Found an error? Have a suggestion? Open an issue or PR.
---
## Resources
- [Official Claude Code Documentation](https://docs.anthropic.com/en/docs/claude-code)
- [Claudelog.com](https://claudelog.com/) — Advanced tips & patterns (inspiration for some sections)
---
## License
This work is licensed under [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/).
You are free to share and adapt this material, provided you give appropriate credit and distribute your contributions under the same license.
---
*Last updated: January 2025 | Version 1.0*

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# Claude Code Cheatsheet
**1 printable page** - Daily essentials
**Author**: Florian BRUNIAUX | Founding Engineer [@Méthode Aristote](https://methode-aristote.fr)
**Written with**: Claude (Anthropic)
---
## Essential Commands
| Command | Action |
|---------|--------|
| `/help` | Contextual help |
| `/clear` | Reset conversation |
| `/compact` | Free up context |
| `/context` | View token usage |
| `/status` | Session state |
| `/exit` | Quit (or Ctrl+D) |
---
## Keyboard Shortcuts
| Shortcut | Action |
|----------|--------|
| `Shift+Tab` | Cycle permission modes |
| `Esc` × 2 | Rewind (undo) |
| `Ctrl+C` | Interrupt |
| `Tab` | Autocomplete |
| `Shift+Enter` | New line |
| `Ctrl+D` | Exit |
---
## File References
```
@path/to/file.ts → Reference a file
@agent-name → Call an agent
!shell-command → Run shell command
```
| IDE | Shortcut |
|-----|----------|
| VS Code | `Alt+K` |
| JetBrains | `Cmd+Option+K` |
---
## Permission Modes
| Mode | Editing | Execution |
|------|---------|-----------|
| Default | Asks | Asks |
| Auto-accept | Auto | Asks |
| Plan Mode | ❌ | ❌ |
**Shift+Tab** to switch modes
---
## Configuration (2 levels)
| Level | Location | Scope | Git |
|-------|----------|-------|-----|
| **Project** | `.claude/` | Team | ✅ |
| **Personal** | `~/.claude/` | You (all projects) | ❌ |
**Priority**: Project overrides Personal
| File | Where | Usage |
|------|-------|-------|
| `CLAUDE.md` | Project root | Team instructions |
| `settings.json` | `.claude/` | Team permissions |
| `settings.local.json` | `.claude/` | Your overrides |
| `CLAUDE.md` | `~/.claude/` | Personal instructions |
---
## .claude/ Folder Structure
```
.claude/
├── CLAUDE.md # Personal instructions
├── settings.json # Hooks (committed)
├── settings.local.json # Permissions (not committed)
├── agents/ # Custom agents
├── commands/ # Slash commands
├── hooks/ # Event scripts
├── rules/ # Auto-loaded rules
└── skills/ # Knowledge modules
```
---
## Typical Workflow
```
1. Start session → claude
2. Check context → /status
3. Plan Mode → Shift+Tab × 2 (for complex tasks)
4. Describe task → Clear, specific prompt
5. Review changes → Always read the diff!
6. Accept/Reject → y/n
7. Verify → Run tests
8. Commit → When task complete
9. /compact → When context >70%
```
---
## Context Management (CRITICAL)
### Statusline
```
Model: Sonnet | Ctx: 89.5k | Cost: $2.11 | Ctx(u): 56.0%
```
**Watch `Ctx(u):`** → >70% = `/compact`, >85% = `/clear`
### Actions by Symptom
| Sign | Action |
|------|--------|
| Short responses | `/compact` |
| Frequent forgetting | `/clear` |
| >70% context | `/compact` |
| Task complete | `/clear` |
### Context Recovery Commands
| Command | Usage |
|---------|-------|
| `/compact` | Summarize and free context |
| `/clear` | Fresh start |
| `/resume` | Resume previous session |
| `/rewind` | Undo recent changes |
---
## Plan Mode & Think Levels
| Feature | Activation | Usage |
|---------|------------|-------|
| **Plan Mode** | `Shift+Tab × 2` or `/plan` | Explore without modifying |
| **Think** | `--think` flag | Standard analysis (~4K tokens) |
| **Think Hard** | `--think-hard` flag | Deep analysis (~10K tokens) |
| **Ultrathink** | `--ultrathink` flag | Maximum depth (~32K tokens) |
**Required for**: features >3 files, architecture, complex debugging
---
## MCP Servers
| Server | Purpose |
|--------|---------|
| **Serena** | Semantic code navigation |
| **Context7** | Library documentation |
| **Sequential** | Structured reasoning |
| **Playwright** | Browser automation |
| **Postgres** | Database queries |
Check status: `/mcp`
---
## Creating Custom Components
### Agent (`.claude/agents/my-agent.md`)
```yaml
---
name: my-agent
description: Use when [trigger]
model: sonnet
tools: Read, Write, Edit, Bash
---
# Instructions here
```
### Command (`.claude/commands/my-command.md`)
```markdown
# Command Name
Instructions for what to do...
$ARGUMENTS - user provided args
```
### Hook (`.claude/hooks/my-hook.sh`)
```bash
#!/bin/bash
INPUT=$(cat)
# Process JSON input
exit 0 # 0=continue, 2=block
```
---
## Anti-patterns
| ❌ Don't | ✅ Do |
|----------|-------|
| Vague prompts | Specify file + line |
| Accept without reading | Read every diff |
| Ignore warnings | Use `/compact` |
| Skip permissions | Never in production |
| Giant context loads | Load only what's needed |
| Negative constraints only | Provide alternatives |
---
## Quick Prompting Formula
```
WHAT: [Concrete deliverable]
WHERE: [File paths]
HOW: [Constraints, approach]
VERIFY: [Success criteria]
```
**Example:**
```
Add input validation to the login form.
WHERE: src/components/LoginForm.tsx
HOW: Use Zod schema, show inline errors
VERIFY: Empty email shows error, invalid format shows error
```
---
## Debug Commands
```bash
claude --version # Version
claude doctor # Diagnostic
claude --debug # Verbose mode
claude --mcp-debug # Debug MCPs
/mcp # MCP status
```
---
## CI/CD Mode (Headless)
```bash
# Non-interactive execution
claude -p "analyze this file" src/api.ts
# JSON output
claude -p "review" --output-format json
# Economic model
claude -p "lint" --model haiku
# With auto-accept
claude -p "fix typos" --dangerously-skip-permissions
```
---
## The Golden Rules
1. **Always review diffs** before accepting
2. **Use `/compact`** before context gets critical (>70%)
3. **Be specific** in requests (WHAT, WHERE, HOW, VERIFY)
4. **Plan Mode first** for complex/risky tasks
5. **Create CLAUDE.md** for every project
6. **Commit frequently** after each completed task
---
## Quick Decision Tree
```
Simple task → Just ask Claude
Complex task → TodoWrite to plan first
Risky change → Plan Mode first
Repeating task → Create agent or command
Context full → /compact or /clear
Need docs → Use Context7 MCP
Deep analysis → Use --think or --ultrathink
```
---
## Resources
- **Official docs**: [docs.anthropic.com/claude-code](https://docs.anthropic.com/en/docs/claude-code)
- **Inspired by**: [Claudelog.com](https://claudelog.com/) - Advanced tips & patterns
- **Full guide**: `english-ultimate-claude-code-guide.md`
- **Project config**: `CLAUDE.md` at project root
---
**Author**: Florian BRUNIAUX | [@Méthode Aristote](https://methode-aristote.fr) | Written with Claude
*Last updated: January 2025 | Version 1.0*

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