Claude Code Guide

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⚡ TL;DR (Under 5 Minutes)

In a hurry? Pick one:

I need...	Go here	Time
Quick reference	Cheat Sheet	2 min
Starter CLAUDE.md	Copy below ↓	30 sec
Key principles	5 Rules	1 min

📋 Minimal CLAUDE.md Template (click to expand & copy)

# Project: [NAME]

## Tech Stack
- Language: [e.g., TypeScript]
- Framework: [e.g., Next.js 14]
- Testing: [e.g., Vitest]

## Commands
- Build: `npm run build`
- Test: `npm test`
- Lint: `npm run lint`

## Rules
- Run tests before marking tasks complete
- Follow existing code patterns
- Keep commits atomic and conventional

Save as CLAUDE.md in your project root. Claude reads it automatically.

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Transparency note: This guide reflects my personal experience after several months of daily Claude Code usage. I'm sharing what I've learned, not claiming expertise. The tool evolves constantly, and so does my understanding. Feedback welcome.

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Privacy Notice: Claude Code sends your prompts, file contents, and MCP results to Anthropic servers.

• Default: 5 years retention (training enabled) | Opt-out: 30 days | Enterprise: 0
• Action: Disable training | Full privacy guide

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Get Started in 60 Seconds

Option A: One-liner (no clone needed)

claude "Fetch and follow the onboarding instructions from: https://raw.githubusercontent.com/FlorianBruniaux/claude-code-ultimate-guide/main/tools/onboarding-prompt.md"

📸 Preview: Interactive Onboarding Flow

1. Choose your language	2. Select your goal
3. Pick your experience level	4. Set available time

Option B: From cloned repo

1. Copy the prompt from tools/onboarding-prompt.md
2. Run claude → Paste → Enter

Claude asks 2-4 questions then guides you through personalized content based on your profile.

Or browse directly: Cheat Sheet | Quick Start | Full Guide

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5 Rules to Remember

1. Review diffs before accepting changes
2. /compact at 70% context usage (check with /status)
3. Be specific: WHAT + WHERE + HOW + VERIFY
4. Plan Mode first for risky/complex tasks (Shift+Tab×2)
5. Create CLAUDE.md for every project

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Choose Your Path

I want to...	Go here
Learn step by step	Run the onboarding command above
Find something specific	Guide Navigation
Test my knowledge	Quiz
Fix a problem	Troubleshooting

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Why This Guide?

The problem:

• You scroll through awesome-lists → links, no learning path
• You read official docs → dense, no progression
• You search tutorials → scattered, outdated in weeks

This guide: Structured learning path with 49 copy-paste templates. Your mileage may vary—but this saves you the exploration time.

Traditional Docs	This Guide
Lists features	Teaches workflows
Reference lookup	Progressive learning
Theoretical concepts	Production-ready patterns
"Figure it out"	"Here's exactly how"

By Florian BRUNIAUX | Founding Engineer @Méthode Aristote | Connect on LinkedIn

Reading time: Quick Start ~15 min. Full guide ~3 hours (most read by section).

If this guide saves you hours of trial-and-error, please star it.

Prerequisites

• Node.js 18+ (or use the shell installer on macOS/Linux)
• Anthropic API key — Get one here

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⚡ Audit Your Setup

Already have Claude Code installed? Quickly scan your configuration:

curl -sL https://raw.githubusercontent.com/FlorianBruniaux/claude-code-ultimate-guide/main/examples/scripts/audit-scan.sh | bash

Instant checks: Config files, tech stack, extensions, security hooks, MCP servers, CLAUDE.md quality

Want deeper analysis? Use tools/audit-prompt.md for personalized recommendations (~3 min).

🤖 For AI Assistants

This guide is optimized for both human and AI consumption:

Resource	Purpose	Tokens
llms.txt	Standard context file for AI crawlers	~1K
reference.yaml	Structured index with line numbers	~2K

Quick load (paste in any AI assistant):

curl -sL https://raw.githubusercontent.com/FlorianBruniaux/claude-code-ultimate-guide/main/machine-readable/reference.yaml

Use cases: Inject into ChatGPT/Claude/Gemini, add to system prompts, reference in Claude Code with @machine-readable/reference.yaml

What's inside: Decision trees, command reference, context zones, MCP servers, agent templates, troubleshooting—optimized for machine consumption. Points to line numbers in the full guide for deep dives.

🔬 Deep Audit (Personalized Recommendations)

Get a comprehensive, context-aware audit that analyzes your project's README, CLAUDE.md files, and business domain to provide tailored recommendations:

🔒 Privacy: The audit downloads reference files from this repo, then analyzes YOUR local files with your Claude CLI. Your project files are sent only to your Anthropic API endpoint, not to this repository or any third party.

Quick Version (~10 sec):

curl -sL https://raw.githubusercontent.com/FlorianBruniaux/claude-code-ultimate-guide/main/examples/scripts/audit-scan.sh | bash -s -- --json | claude -p "Analyze this Claude Code setup. Give: 1) Health score 0-100 2) Top 3 quick wins 3) CLAUDE.md template for detected stack. Be concise."

Full Audit with Context (~30 sec, recommended):

# Claude Code Deep Audit - Context-Aware Version
# Downloads reference files, reads YOUR local files, analyzes with Claude
REF=$(curl -sL https://raw.githubusercontent.com/FlorianBruniaux/claude-code-ultimate-guide/main/machine-readable/reference.yaml)
SCAN=$(curl -sL https://raw.githubusercontent.com/FlorianBruniaux/claude-code-ultimate-guide/main/examples/scripts/audit-scan.sh | bash -s -- --json 2>/dev/null)
README_CONTENT=$(head -100 README.md 2>/dev/null || echo "No README.md found")
CLAUDE_MD=$(cat CLAUDE.md 2>/dev/null || echo "No CLAUDE.md found")
LOCAL_CLAUDE_MD=$(cat .claude/CLAUDE.md 2>/dev/null || echo "No .claude/CLAUDE.md found")

claude -p "Reference:
$REF

Scan results:
$SCAN

Project README (first 100 lines):
$README_CONTENT

Project CLAUDE.md:
$CLAUDE_MD

Local .claude/CLAUDE.md:
$LOCAL_CLAUDE_MD

IMPORTANT: Focus on INCREMENTAL improvements to existing setup. Don't suggest creating things that already exist. If CLAUDE.md exists, suggest specific improvements to it rather than a full rewrite.

Based on ALL this context, provide:
1. Stack Recap: runtime, framework, test runner, bundler, database, key integrations detected
2. Health Score (0-100) - be strict: penalize missing SSoT pattern if >100 lines without @refs
3. Findings table: Priority|Element|Status|Action (only gaps, not what exists)
4. Top 3 quick wins (<5 min) - MUST be specific to THIS project's domain (not generic advice)
5. If CLAUDE.md exists: list 3-5 specific improvements (not a full template). If missing: provide ~100 line template
6. Suggested agents/commands/hooks that DON'T duplicate existing ones - check extensions count first
7. Ideas to leverage Claude Code for this specific domain and detected integrations"

What you get:

• Stack recap: Runtime, framework, test runner, bundler, database, and key integrations auto-detected
• Strict health score (penalizes large CLAUDE.md without @refs)
• Incremental improvements: Specific fixes for YOUR setup, not generic advice
• Domain-aware suggestions (e.g., EdTech → session planning agents, E-commerce → inventory commands)
• Non-duplicate suggestions: Only recommends agents/commands you don't already have

Want maximum depth? Use tools/audit-prompt.md with claude --ultrathink

🧠 Knowledge Quiz

Test your Claude Code knowledge with an interactive CLI quiz. 159 curated questions covering all 10 guide sections, with immediate feedback and documentation links.

# Quick start
cd quiz && npm install && npm start

# With options
node quiz/src/index.js --profile senior --topics 2,4,7 --count 10

Example Session (click to expand)

============================================================
   CLAUDE CODE KNOWLEDGE QUIZ
============================================================

? Select your profile: Senior Developer (40 min to mastery)
? Select topics to quiz: All topics (recommended)

------------------------------------------------------------
Question 1/20 [Core Concepts]

At what context percentage should you use /compact?

  A) 0-50%
  B) 50-70%
  C) 70-90%
  D) Only at 100%

? Your answer: C

✓ CORRECT!

------------------------------------------------------------
Question 2/20 [Hooks]

What exit code should a PreToolUse hook return to BLOCK an operation?

  A) 0
  B) 1
  C) 2
  D) -1

? Your answer: A

✗ INCORRECT. The correct answer is C) 2

Explanation:
Exit code 2 blocks the operation. Exit code 0 allows it to proceed.
Other exit codes are treated as errors and logged but don't block.

See: guide/ultimate-guide.md#72-creating-hooks

------------------------------------------------------------
   QUIZ COMPLETE
------------------------------------------------------------

Overall Score: 16/20 (80%)

By Category:
  Core Concepts       6/7  (86%)  [████████░░]
  Agents              5/7  (71%)  [███████░░░]
  Hooks               5/6  (83%)  [████████░░]

Weak Areas (< 75%):
  - Agents: Review section 4 in the guide

? What would you like to do? Retry wrong questions only

Features:

• 4 profiles: Junior (15q), Senior (20q), Power User (25q), PM (10q)
• 10 topic categories matching guide sections
• Immediate feedback with explanations and doc links
• Score tracking with category breakdown and weak area identification
• Session history saved to ~/.claude-quiz/
• Replay options: Retry wrong questions or start fresh
• Cross-platform: Works on macOS, Linux, and Windows

See: Quiz Documentation | Contribute Questions

🎯 By Role (Tailored Learning Paths)

Junior Developer — Foundation path (6 steps)

1. Quick Start — Install & first workflow
2. Essential Commands — The 7 commands
3. Context Management — Critical concept
4. Memory Files — Your first CLAUDE.md
5. TDD Workflow — Test-first development
6. Cheat Sheet — Print this

Senior Developer — Intermediate path (6 steps)

1. Core Concepts — Mental model
2. Plan Mode — Safe exploration
3. Methodologies — TDD, SDD, BDD reference
4. Agents — Custom AI personas
5. Hooks — Event automation
6. CI/CD Integration — Pipelines

Power User — Comprehensive path (7 steps)

1. Complete Guide — End-to-end
2. Architecture — How Claude Code works
3. Security Hardening — MCP vetting, injection defense
4. MCP Servers — Extended capabilities
5. Trinity Pattern — Advanced workflows
6. Observability — Monitor costs & sessions
7. Examples — Production templates

Product Manager — Overview path (5 steps)

1. What's Inside — Scope
2. Golden Rules — Key principles
3. Data Privacy — Retention & compliance
4. Adoption Approaches — Team strategies
5. Context Management — Why it matters

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📚 Complete Toolkit

Core Documentation

File	Purpose	Time Investment
Ultimate Guide	Complete reference, 10 sections	~3 hours (or by section)
Cheat Sheet	1-page printable reference	5 minutes
Architecture & Internals	How Claude Code works under the hood	~25 minutes
Methodologies	15 development methodologies reference	~20 minutes
Workflows	Practical guides (TDD, SDD, Plan-Driven)	~30 minutes
Data Privacy	Data retention and privacy guide	~10 minutes
Security Hardening	MCP vetting, injection defense, CVEs	~25 minutes
Observability	Session monitoring and cost tracking	~15 minutes
LLM Reference	Machine-optimized index (~2K tokens)	For Claude/AI assistants
Setup Audit	Optimize your configuration	~10 minutes
Examples Library	Production-ready templates	Browse as needed

🇫🇷 Whitepapers (French)

8 standalone documents covering Claude Code from zero to production (~185 pages total):

#	Title	Audience	Pages
#0	De Zéro à Productif	Everyone	~8
#1	Prompts qui Marchent	Dev Junior/Senior	~12
#2	Personnaliser Claude	Senior/Power	~15
#3	Sécurité en Production	DevSecOps/TechLead	~15
#4	L'Architecture Démystifiée	Architects	~12
#5	Déployer en Équipe	TechLead/PM	~12
#6	Privacy & Compliance	Compliance/Legal	~10
#7	Guide de Référence Complet	Everyone	~100

Reading paths by profile: Junior (WP #0→#1, 25 min) | Senior (#0→#1→#2→#3, 1h15) | Tech Lead (#0→#5→#3→#2, 1h15)

Alternative Formats (Interactive AI, PDFs)

• DeepWiki — AI-powered Q&A, semantic search, instant summaries
• NotebookLM Slides — Visual overview (~20 min)
• Kimi PDF — Full text export (~3 hours)

Repository Structure

claude-code-ultimate-guide/
├── guide/                    # 📖 Core documentation
│   ├── ultimate-guide.md     # Complete reference (~9600 lines)
│   ├── cheatsheet.md         # 1-page printable reference
│   ├── architecture.md       # How Claude Code works internally
│   ├── adoption-approaches.md # Team implementation strategies
│   ├── data-privacy.md       # Data retention and privacy guide
│   ├── methodologies.md      # 15 development methodologies reference
│   ├── observability.md      # Session monitoring and cost tracking
│   └── workflows/            # Practical workflow guides
│       ├── tdd-with-claude.md
│       ├── spec-first.md
│       ├── plan-driven.md
│       ├── iterative-refinement.md
│       └── pdf-generation.md
│
├── tools/                    # 🔧 Interactive utilities
│   ├── audit-prompt.md       # Setup audit with recommendations
│   ├── onboarding-prompt.md  # Personalized guided tour
│   └── mobile-access.md      # Mobile access setup (ttyd + Tailscale)
│
├── machine-readable/         # 🤖 LLM/AI consumption
│   ├── reference.yaml        # Structured index (~2K tokens)
│   └── llms.txt              # Standard LLM context file
│
├── exports/                  # 📄 Generated outputs
│   ├── notebooklm.pdf        # Visual slides
│   └── kimi.pdf              # Full PDF export
│
├── examples/                 # 📦 Production templates
│   ├── agents/               # Custom AI personas
│   ├── commands/             # Slash commands (/pr, /commit, /diagnose...)
│   ├── hooks/                # Security & automation (bash + PowerShell)
│   ├── skills/               # Reusable knowledge modules
│   ├── scripts/              # Setup & diagnostic utilities
│   ├── github-actions/       # CI/CD workflows
│   ├── config/               # Configuration templates
│   ├── memory/               # CLAUDE.md templates
│   ├── modes/                # Behavioral modes (SuperClaude)
│   └── workflows/            # Advanced workflow guides
│
├── whitepapers/              # 🇫🇷 French whitepaper series (8 docs, ~185 pages)
│   ├── 00-introduction-serie.qmd
│   ├── 01-prompts-efficaces.qmd
│   ├── ...
│   └── 07-guide-reference.qmd
│
└── quiz/                     # 🧠 Interactive knowledge quiz (159 questions)

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🎯 Production-Ready Examples

Copy-paste templates from examples/ for immediate use:

Slash Commands

Command	Purpose	Highlights
/pr	Create PRs with scope analysis	Complexity scoring, auto-split detection
/release-notes	Generate release notes (3 formats)	CHANGELOG + PR body + Slack
/sonarqube	Analyze quality issues	Executive summary, action plans
/commit	Conventional commits	Follows team conventions
/diagnose	Interactive troubleshooting	Bilingual FR/EN, auto-scans environment
/generate-tests	Generate test suites	TDD integration, coverage focus
/review-pr	Review pull requests	Code quality analysis
/git-worktree	Manage git worktrees	Parallel development
/validate-changes	Validate code changes	Pre-commit checks

Utility Scripts

Script	Purpose	Performance
session-search.sh	Fast session search & resume	15ms list, 400ms search
audit-scan.sh	Setup audit scanner	~2s

Security & Automation Hooks

Hook	Event	Purpose
dangerous-actions-blocker.sh	PreToolUse	Block rm -rf /, force push, secrets
prompt-injection-detector.sh	PreToolUse	Detect injection attempts
unicode-injection-scanner.sh	PreToolUse	Detect zero-width, RTL, ANSI escape
repo-integrity-scanner.sh	PreToolUse	Scan README/package.json for injection
mcp-config-integrity.sh	SessionStart	Verify MCP config hash (CVE protection)
output-secrets-scanner.sh	PostToolUse	Detect exposed secrets
notification.sh	Notification	macOS sound alerts
auto-format.sh	PostToolUse	Auto-format with Prettier

See All 14 Hooks — Includes session-logger, security-check, claudemd-scanner, and more

GitHub Actions (CI/CD)

Workflow	Trigger	Purpose
claude-pr-auto-review.yml	PR open	Auto code review with inline comments
claude-security-review.yml	PR open	Security scan (OWASP Top 10)
claude-issue-triage.yml	Issue opened	Auto-triage with labels

See Complete Catalog | Browse Interactive Catalog — Includes agents, skills, memory templates, config files, workflows

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📖 Guide Navigation

Jump directly to any section in the Ultimate Guide:

Section	After this, you can...	When
1. Quick Start	Run Claude Code and complete your first AI-assisted task	Day 1
2. Core Concepts	Manage context efficiently and avoid common pitfalls	Week 1
3. Memory & Settings	Create CLAUDE.md files that improve AI responses	First project
4. Agents	Build custom AI personas for specialized workflows	Advanced
5. Skills	Package reusable knowledge modules for your team	Scaling
6. Commands	Create custom slash commands with variable interpolation	Automation
7. Hooks	Automate security checks and formatting on every action	Production
8. MCP Servers	Extend Claude with databases, browsers, and external tools	Extended
9. Advanced Patterns	Orchestrate Trinity workflows and CI/CD pipelines	Power user
10. Reference	Look up commands, shortcuts, and troubleshooting tips	Daily

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🔑 Golden Rules

Master these five principles before diving deeper:

1. Always review diffs before accepting changes — Claude suggests, you decide
2. Use /compact before context hits 70% — prevention beats recovery
3. Be specific in requests — Include WHAT, WHERE, HOW, VERIFY
4. Start with Plan Mode for risky/complex tasks — read-only exploration first
5. Create CLAUDE.md for every project — single source of truth

Context Management Quick Reference:

Context %	Status	Action
0-50%	Green	Work freely
50-70%	Yellow	Be selective
70-90%	Orange	/compact now
90%+	Red	/clear required

These thresholds are based on my experience. Your optimal workflow may differ.

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🌍 About This Guide

Our Philosophy

Learning journey over reference manual. We focus on:

• Understanding why before diving into how
• Real-world patterns you can use immediately
• Progressive complexity — start simple, master advanced at your pace
• Practical workflows over theoretical concepts

Think of this as a structured learning companion — not just documentation.

Origins & Transparency

This guide is the result of several months of daily practice with Claude Code. I don't claim expertise—I'm sharing what I've learned to help peers and evangelize AI-assisted development best practices.

Key Inspirations:

• Claudelog.com — Excellent patterns & tutorials
• zebbern/claude-code-guide — Comprehensive reference with security focus
• ykdojo/claude-code-tips — Practical productivity techniques

Created with Claude Code. Community-validated through contributions and feedback. Found an issue? Report it | Contribute

Windows Users: Most commands work with Git Bash. Use %USERPROFILE%\.claude\ for paths. PowerShell scripts may need adjustment. Report Windows issues | Help improve support

Language & Translation

Written in English for wider reach. French is my native language—I can translate directly or leverage AI + community for other languages. Request translations via issues.

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🤝 Contributing

Found an error? Have a suggestion? See CONTRIBUTING.md for guidelines.

Ways to Help:

• Star the repo to increase visibility
• Report issues (especially Windows-specific)
• Submit PRs with corrections or enhancements
• Share your workflows in Discussions
• Request missing topics or examples

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📚 Related Resources

Complementary Guides

• zebbern/claude-code-guide — Comprehensive troubleshooting with cybersecurity focus
• Claudelog.com — Tips, patterns, tutorials (highly recommended)
• ykdojo/claude-code-tips — Voice workflows, context management, terminal efficiency
• DeepTo Guide — XML prompts, session continuation, image processing
• Shipyard Cheat Sheet — CLI flags, MCP patterns

Community Collections

• awesome-claude-code — Extensive tool library (19.9k stars)
• awesome-claude-skills — Custom skills
• awesome-claude-code-subagents — Full-stack agents

Frameworks & Advanced Reading

• SuperClaude — Advanced configuration framework
• Nick Tune: Coding Agent Workflows — Autonomous patterns

Official Documentation

• Claude Code Docs — Anthropic official reference

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📄 License

Licensed under CC BY-SA 4.0. Free to share and adapt with attribution and same-license distribution.

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⭐ Support This Project

If this guide saved you time, helped you master Claude Code, or inspired your workflows:

1. Star this repository — Help others discover it
2. Share your success stories in Discussions
3. Contribute improvements via Pull Requests
4. Connect on LinkedIn to discuss AI-assisted development

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📬 Stay Updated

Get notified about major updates, new templates, and Claude Code best practices:

Subscribe to the newsletter — No spam, 1-2 emails/month max, unsubscribe anytime.

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Version 3.8.2 | January 2026 | Crafted with Claude