This guide provides a comprehensive educational resource for Claude Code, targeting developers and power users aiming to master agentic workflows beyond basic configuration. It emphasizes understanding the underlying principles, trade-offs, and security implications, enabling users to confidently design custom solutions rather than merely copy-pasting templates. The benefit is a deeper, more secure, and adaptable approach to AI-assisted development.

How It Works

The guide focuses on building mental models and understanding the "why" behind Claude Code's functionality, including its internal architecture, context flow, and tool orchestration. It differentiates itself by offering in-depth explanations of design trade-offs (agents vs. skills vs. commands) and practical guides for methodologies like TDD, SDD, and BDD, integrating AI collaboration. A unique security-first approach is central, featuring a threat intelligence database and production hardening workflows.

Quick Start & Requirements

• Primary install/run command: The quickest access is via the "Cheat Sheet" or interactive onboarding prompt. For full access to examples and the quiz, cloning the repository is recommended.
• Non-default prerequisites: Node.js 18+, Anthropic API key.
• Links:
  • Onboarding instructions: https://raw.githubusercontent.com/FlorianBruniaux/claude-code-ultimate-guide/main/tools/onboarding-prompt.md
  • Local Quiz Execution: cd quiz && npm install && npm start
  • cc-copilot-bridge (for flat-rate access): https://github.com/FlorianBruniaux/cc-copilot-bridge.git

Highlighted Details

• Security-First Approach: Features a unique threat intelligence database tracking 18 CVE-mapped vulnerabilities and 341 malicious skills, alongside production hardening workflows.
• Comprehensive Knowledge Validation: Includes a 274-question quiz with instant feedback, covering 9 categories and 4 skill profiles to validate understanding.
• Agent Teams Coverage: Provides detailed guidance on Anthropic's multi-agent coordination (v2.1.32+ experimental), including production metrics and validated workflows.
• Structured Development Methodologies: Offers full workflow guides for TDD, SDD, and BDD, explaining how to integrate AI collaboration into these processes.
• Extensive Template Library: Contains 172 production-ready templates across agents, commands, hooks, and skills, with comments explaining the rationale behind each pattern.

Maintenance & Community

The guide is updated daily and is versioned (v3.27.8 as of Feb 20, 2026). It links to a Slack community ("Dev With AI" with 1500+ devs) and encourages contributions via GitHub Issues and PRs. The author, Florian Bruniaux, is a Founding Engineer at Méthode Aristote.

Licensing & Compatibility

• Guide Content: CC BY-SA 4.0 (Attribution-ShareAlike). Requires attribution for reuse.
• Templates: CC0 1.0 (Public Domain Dedication). Can be copied freely without attribution.
• Compatibility: No explicit restrictions mentioned for commercial use or closed-source linking, beyond the CC BY-SA 4.0 attribution requirement for the guide content.

Limitations & Caveats

The guide acknowledges that the Claude Code tool evolves rapidly, and the content aims to share what works in production rather than being exhaustive or providing definitive answers. It emphasizes that universal configurations are not provided, as each project is unique, and encourages critical use and experimentation. The "Agent Teams" feature is noted as experimental.