Your First Hour With Claude Code: Setup to First Diff

Starting your journey with Claude Code marks a shift in how you interact with the terminal and your codebase. This developer-centric tool from Anthropic is not just a chatbot, it is a high-capability agent capable of exploring files, running tests, and executing commands within your local environment. In this guide, we will cover your first hour with Claude Code, moving from initial setup to generating your first diff.

Understanding the Claude Code Paradigm

Claude Code is a command line interface that brings the reasoning capabilities of Claude 3.5 Sonnet directly to your local filesystem. Unlike web-based interfaces, this tool operates where your code lives. It understands the context of your repository because it can actively search through your directories and read file contents.

The primary value proposition is reduced context switching. Instead of copying and pasting code blocks into a browser, you invite the agent into your shell. It acts as a collaborator that can propose changes and explain complex logic. While other tools like GitHub Copilot focus on autocomplete, Claude Code is designed for task-oriented agency.

The Prerequisites and Installation

Before you can begin, ensure you have a modern terminal environment and Node.js installed. Claude Code is distributed via npm, making it accessible on Mac, Windows, and Linux.

1. Open your terminal of choice.
2. Run the command to install the CLI globally: npm install -g @anthropic-ai/claude-code.
3. Once installed, run claude to initiate the authentication process.
4. Follow the browser prompts to link your Anthropic account.

This process establishes a secure connection between your local machine and the Anthropic API. If you prefer a managed environment where you can organize multiple tasks, you can also run these commands within terminals inside a specialized workspace.

Improving the Experience with Deska

While Claude Code works in any standard terminal, managing long-running agent sessions alongside your editor can become cluttered. This is where Deska provides a significant organizational advantage.

Deska is a local-first desktop application that provides an infinite canvas for your development tools. Instead of tabbing between a terminal and an IDE, you can place a Claude Code terminal panel right next to your code editor and a browser. This visual layout helps you monitor what the agent is doing in real time.

By using coding agents within the Deska environment, you maintain a bird-eye view of your entire project. You can run Claude Code in one panel and use Ask Deska to manage the workspace itself, such as opening new documentation panels or adjusting your layout.

Your First Commands: Exploration

Once authenticated, navigate to a project directory and type claude. The initial step of your first hour should be codebase exploration. Rather than telling the agent what to fix, ask it what it sees.

Start with a broad prompt: What is the architecture of this project?

Claude will index the file structure and provide a summary of the technologies used. It might identify the main entry points, the testing framework, and the data models. This phase is crucial for verifying that the agent has the correct permissions and can read your files accurately.

Refining the Context

Claude Code is powerful, but it relies on clear instructions. During this first hour, practice using the / slash commands. These built-in utilities allow you to manage the agent behavior without writing long natural language prompts.

• /help: Displays all available commands and shortcuts.
• /compact: Compresses the conversation history to save tokens.
• /review: Asks the agent to look over a specific file for potential bugs.
• /clear: Resets the current session context if the agent becomes confused.

A key part of data and storage management is knowing when to reset. If you shift from working on a backend API to a frontend component, clearing the context helps the agent stay focused on relevant files.

Generating the First Diff

The climax of your first hour is moving from exploration to action. Identify a small task, such as adding a new utility function or fixing a minor CSS bug.

Provide a specific prompt: Add a helper function to format dates in utils.js and then update the Header component to use it.

Claude Code will analyze the relevant files and propose a series of changes. It will show you a diff, which is a visual representation of what will be added or removed. Carefully review this diff. If the changes look correct, you can approve them. The agent will then write the changes directly to your files.

This direct file manipulation is why privacy is so important. Since Claude Code and tools like Deska are local-first, your proprietary code is handled with care, and the logic of the transformation happens through secure API calls rather than uploading your entire repository to a third-party cloud.

Managing Sessions Remotely

Development does not always happen at a desk. If you have a long-running task initiated by Claude Code, you might need to step away. Deska offers a mobile app that allows you to monitor these sessions. Through a secure relay that pairs devices directly without exposing ports, you can check the progress of an agent or run a quick command to stop a process if something goes wrong.

Frequently Asked Questions

How do I use my own API keys with Claude Code?

Claude Code typically uses the billing associated with your Anthropic Console account. However, in Deska, you can utilize the BYOK (Bring Your Own Key) model for various tools to manage your costs directly. Check the settings panel to input your credentials.

Is Claude Code better than a standard IDE extension?

It depends on your workflow. IDE extensions are great for inline completions. Claude Code is an agentic tool, meaning it is more effective at complex tasks involving multiple files and terminal execution. Many developers use both side-by-side.

Can Claude Code delete my files?

The agent requires permission to write changes. Always review the plan it proposes before hitting enter. If a mistake occurs, you can use your version control system to revert the changes immediately.

Get Started with a Better Workspace

Setting up Claude Code is the first step toward an agent-integrated workflow. To get the most out of these tools, you need an environment designed for multitasking. Deska provides the infinite canvas, local-first security, and auxiliary tools needed to keep your AI agents organized.

Download the free app for Mac, Windows, or Linux and build your perfect workspace today.

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