How to Use Claude Code Effectively — A Developer’s Review

What is Claude Code?

Claude Code is a command-line tool built by Anthropic that brings AI capabilities directly into your development environment. Unlike using Claude through a browser, Claude Code connects to your actual codebase — it reads your files, understands how your project is structured, and can take action directly in your terminal.

For developers, this changes how AI assistance works in practice. Instead of explaining your problem and pasting snippets into a chat window, Claude Code sees the full picture — your functions, your dependencies, your folder structure — and produces code that actually fits your project rather than a generic example.

It works particularly well for debugging, writing custom functions, refactoring, and understanding unfamiliar code. For WordPress developers specifically, it can read your theme or plugin files, understand what hooks and functions already exist, and work within your existing patterns rather than against them.

How to Install Claude Code

Claude Code is installed via npm, so you’ll need Node.js on your machine before getting started. Open your terminal and run:

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

Once installed, authenticate with your Anthropic account:

claude

This will prompt you to log in or provide an API key. Claude Code requires an active Anthropic subscription — see pricing below. Once authenticated, navigate to your project folder in the terminal and run claude again to start a session scoped to that project. For full setup details, refer to the official Claude Code documentation.

How to Use Claude Code in VS Code

This is where it becomes a genuine workflow tool rather than just another chatbot. When you run Claude Code from your project root inside the VS Code integrated terminal, it reads your entire project — not just the file you have open, but your full directory structure, existing functions, config files, and dependencies.

You fire it up with a simple claude command, give it permission to work in the folder, and ask for things in plain language. Something like for a WordPress search:

“Build me an AJAX search results page with 20 results per page for Users with the role of ‘customer’, add a search form with the following fields (name, ID, country), reference the styles in the theme.scss file, create a search-results.scss file for the styles, import the new file into above-the-fold.scss and run Gulp to minify.”

And it does it — and does it well, especially if you have a clean file and coding structure in your project. If it isn’t clear on a detail it will ask for clarity before starting. It’ll be done in roughly 5 minutes, then you spend another hour or two tweaking the details. With over 20 years of programming experience, I can give it very specific instructions, and when working with well-documented frameworks like WordPress, it basically nails it on the first pass. As a developer, it’s honestly a little scary how effective it is.

Here’s where it fits especially well in a VS Code WordPress workflow:

• Automation tools like Gulp — it understands your gulpfile and can troubleshoot tasks, add new ones, or explain what existing ones are doing
• Local dev environments — whether you’re on Local by Flywheel, Lando, or Docker, it works within your setup and factors it into responses
• Coding standards — if you have established patterns in your project, it picks them up and follows them in anything it writes
• Debugging — paste an error message directly into Claude Code and it looks at the relevant files in your project rather than giving a generic answer

One thing I find extremely valuable is its Git handling. Have you ever had to roll back a commit? It can be a real pain if you don’t do it often. I tend to have a lot of missteps when I try to roll back, but with Claude Code managing Git, it does it cleanly every time. One thing I found that I didn’t like, it included itself as an author when I asked it to push a commit for me!

Another area where it genuinely shines is managing NPM packages. Dependency errors and version conflicts can send you down a rabbit hole fast — Claude Code gets to the heart of the issue almost instantly and walks you through the fix without the usual back-and-forth debugging.

How to Talk to Claude Code

Claude Code is conversational but benefits from clear, specific prompts — the more context you give it, the better the output.

• Debugging: Describe the error and what you were doing when it happened. Claude Code looks at the relevant files and diagnoses the issue specific to your project rather than offering a generic fix.
• Writing new functions: Describe what you need the function to do, where it should live, and any existing functions it should interact with. You’ll get something that fits your codebase rather than a standalone example.
• Understanding unfamiliar code: Ask it to explain a specific file or function — extremely useful when inheriting a project or returning to code you haven’t touched in a while.
• Refactoring: Tell it what you want to improve — performance, readability, coding standards compliance — and it will suggest changes in context.

One important note: Claude Code can suggest and write code, but it won’t deploy or push changes without your direction. Always review what it produces before committing, particularly for anything touching security, database queries, or user data.

Voice Mode

I just tested this out on my Mac, it works amazingly, I see my typing skills going even downhill from here. But seriously, it is very cool and great for accessibility.