Enroll in this free Claude Code course to learn how to use AI coding assistants effectively. Understand Plan Mode, Thinking Mode, hooks, permissions, and custom commands. Get a certificate upon completion! Perfect for developers wanting to enhance their AI-powered coding skills.
In this free course, you’ll explore:
✅ Plan Mode vs Thinking Mode
✅ How to use Hooks for safer code execution
✅ Permissions setup in GitHub Actions
✅ Creating Custom Commands with runtime parameters
✅ Protecting sensitive files with PreToolUse hooks
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This article explores the fundamental principles, modes, permissions, and hooks used in Claude Code through a series of essential questions and answers.
🧩 Fundamental Limitation of Language Models
Question:
What is the fundamental limitation of language models that necessitates the use of a tool system in coding assistants?
Answer:
✅ They can only process text input/output and cannot directly interact with external systems.
Explanation:
Language models like Claude or GPT can only read and generate text—they cannot access files, run code, or make network requests. To bridge this gap, a tool system is used to safely extend their capabilities.
🔐 Permissions in GitHub Actions
Question:
What permission configuration is required when integrating MCP servers with Claude Code in GitHub Actions?
Answer:
✅ Each MCP server tool must be individually listed in the permissions.
Explanation:
For security and control, every MCP (Model Context Protocol) server tool needs explicit permission to run. This ensures transparency and prevents unauthorized actions.
🧭 Plan Mode vs. Thinking Mode
Question:
What is the primary difference between Plan Mode and Thinking Mode in Claude Code?
Answer:
✅ Plan Mode handles breadth (multi-step tasks) while Thinking Mode handles depth (complex logic).
Explanation:
Plan Mode is ideal for organizing tasks and creating structured plans, while Thinking Mode dives deep into reasoning and problem-solving.
📁 Claude.md File Types
Question:
Which of the following correctly describes the three types of Claude.md files and their usage?
Answer:
✅ Project level (shared with team, committed), Local level (personal, not committed), Machine level (global for all projects).
Explanation:
- Project level: Stored in the repository for all team members.
- Local level: User-specific settings not shared with others.
- Machine level: Global configuration for all projects on one device.
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⚙️ Creating Custom Commands
Question:
How do you create a custom command in Claude Code that accepts runtime parameters?
Answer:
✅ Include $ARGUMENTS placeholder in the markdown command file.
Explanation:
This allows dynamic input from the user at runtime, making custom commands flexible and interactive.
🧩 Hook Types and Uses
Question:
Which type of hook can prevent a tool call from happening if certain conditions are met?
Answer:
✅ PreToolUse hook.
Explanation:
A PreToolUse hook runs before Claude executes a tool, allowing you to stop or modify the behavior based on specific rules.
🧱 Protecting Sensitive Files
Question:
A developer wants to prevent Claude from reading sensitive .env files. Which type of hook should they set up, and what tool names would they likely match?
Answer:
✅ PreToolUse hook, matching Read and Grep.
Explanation:
This prevents Claude from reading or searching through sensitive files before any action takes place, enhancing project security.
⚡ Purpose of Hooks
Question:
What is the primary purpose of hooks in Claude Code?
Answer:
✅ To run commands before or after Claude executes a tool.
Explanation:
Hooks act as checkpoints that let developers customize Claude’s behavior, add safety checks, or trigger automatic actions
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Conclusion
Claude Code provides developers with an intelligent, structured environment for AI-assisted programming.
Its modes (Plan & Thinking), hooks, permissions, and custom commands give users fine-grained control over how the assistant operates — balancing power, safety, and collaboration.
By mastering these components, developers can create efficient, secure, and highly personalized AI-assisted workflows.