Claude Code: Your AI Development Partner in the Terminal

If you work as a developer, or have developers on your team, you've probably encountered AI coding tools already. GitHub Copilot, Cursor, and similar solutions integrate into your editor. But what if you want to use AI directly from the terminal, right where most of your work happens?

Anthropic's tool called Claude Code is a command-line AI assistant that communicates with you through the terminal. It's not an editor plugin, not a web interface: it's a CLI program that sees your project, understands your code, and can modify your files.

In this article, we'll show you how to install it, how to start working with it, and what tasks it can help with day-to-day.

What Is Claude Code?#

Claude Code is Anthropic's official command-line tool, introduced in early 2025. The concept is simple: you open your terminal, type what you want, and the AI does it for you.

It's not a chatbot that copies code snippets for you. Claude Code has direct access to your file system and can:

• Read, write, and edit files
• Run git commands
• Execute terminal commands
• Modify multiple files at once
• Understand your entire project

This means you don't have to copy context back and forth. You simply describe what you want, and the AI takes care of it.

Installation Step by Step#

Installation is a single command:

npm install -g @anthropic-ai/claude-code

After installation, set up your API key:

export ANTHROPIC_API_KEY="sk-ant-..."

Then navigate to your project folder and start Claude Code:

cd ~/projects/my-app
claude

That's it. No complex configuration, no setup wizard. One command, and you're ready to go.

Your First Commands#

When you run the claude command, you get an interactive interface in the terminal. You can simply type what you want in natural language.

> What's the structure of this project?

The project is a Next.js application using the App Router.
Main folders:
  src/app/          - Pages and layout
  src/components/   - React components
  src/lib/          - Utility functions
  public/           - Static files
...

Claude Code can also accept one-liner instructions passed directly from the command line:

claude "fix the TypeScript errors in the auth.ts file"

claude "create a new React component called ContactForm
  with name, email, and message fields"

Here are some practical examples to start with:

# Code explanation
claude "explain what the handleSubmit function does
  in src/components/Form.tsx"

# Bug fixing
claude "the /api/users endpoint is throwing a 500 error,
  look into what the problem might be"

# Writing tests
claude "write unit tests for the functions in utils/format.ts"

# Git operations
claude "review the changes and create a commit
  with a meaningful message"

Key Capabilities#

Context-Aware Code Generation#

Claude Code doesn't generate code blindly. Since it has access to your entire project, the new code matches your existing style, imports the right modules, and follows your project conventions.

For example, if you ask for a new API endpoint, it looks at the existing ones and follows the same pattern: uses the same middleware, handles errors the same way, and places the file in the right folder.

Debugging and Fixing#

Debugging is one of the strongest use cases. Instead of browsing through stack traces yourself, you simply hand them to Claude Code:

claude "I'm getting this error: TypeError: Cannot read
  properties of undefined (reading 'map')
  in the ProductList component. Fix it."

Claude Code finds the affected file, understands the context, identifies the problem (for example, a missing empty array check), and fixes the code.

Git Integration#

Claude Code can run and interpret git commands directly:

• It checks git diff to see changes
• Creates commits with proper messages
• Opens pull requests with descriptions
• Helps resolve conflicts

claude "review the changes and if everything looks good,
  create a commit"

Multiple Files at Once#

During a refactor, you often need to modify multiple files at the same time. Claude Code handles this naturally:

claude "rename the UserService class to AccountService
  across the entire project"

The tool finds all references, renames the class, updates imports, and modifies filenames if needed.

Comparison with Other Tools#

How does Claude Code compare to other AI coding tools?

Claude Code's biggest advantage is its agentic behavior: it doesn't just suggest, it acts. It opens files, modifies them, runs tests, and commits. No other tool currently offers this level of autonomy.

Who Should Use It?#

Claude Code is ideal for:

• Solo developers who want to move faster
• Small teams where there's no time to do every task manually
• SMB technical leads who also write code themselves
• DevOps engineers who spend a lot of time in the terminal
• Beginner developers who want help while learning

It's not ideal if:

• You work exclusively in graphical interfaces and never open a terminal
• Your project runs in a closed environment where you can't use external APIs

Next Steps#

This article is the opening piece of our Claude Code series. In the upcoming parts, we'll show you:

• How to teach the AI your project's rules using the CLAUDE.md file
• How to create videos programmatically with Remotion
• How to use Claude Code as a non-developer SMB leader

If you'd like to try the tool, installation takes five minutes. But if your team needs help adopting AI tools, we're happy to assist.