Claude Code is a command-line tool made by Anthropic that brings Claude directly into your development workflow. Instead of switching between your editor and a browser to ask Claude questions, Claude Code runs in your terminal and can read your files, write code, run commands, and work through entire tasks autonomously. It’s one of the most capable AI coding tools available.
What Does Claude Code Actually Do?
Claude Code is an agentic coding assistant — meaning it doesn’t just answer questions, it can take actions. Give it a task and it works through it: reading your codebase, making changes across multiple files, running tests, fixing errors, and reporting back when it’s done.
Practical examples of what it can do:
- “Add input validation to all the form fields in this project”
- “Find and fix the bug causing this error, then run the tests”
- “Refactor this module to use async/await throughout”
- “Set up a new FastAPI endpoint with authentication for this route”
- “Review this pull request and summarise what it changes”
How is Claude Code Different from GitHub Copilot?
GitHub Copilot is primarily a code completion tool — it suggests the next line or block as you type. Claude Code is more like a collaborator you give tasks to. You describe what you want, Claude Code reads your project, works out what needs to change, and does it. The two tools serve different use cases and many developers use both.
See our full comparison: Claude Code vs GitHub Copilot
How Does It Work?
Claude Code runs in your terminal alongside your code editor. It has permission-based access to your file system — you control what it can read, write, and execute. When you give it a task:
- It reads the relevant files in your project
- It works out what changes are needed
- It shows you what it plans to do and asks for approval (for significant changes)
- It makes the changes and reports back
You stay in control — Claude Code asks before making changes it’s uncertain about, and you can review everything it does.
What Languages and Frameworks Does It Support?
Claude Code works with any programming language or framework — it reads code, not just specific languages. It’s particularly strong with Python, JavaScript, TypeScript, Go, Rust, and web frameworks like React, FastAPI, Django, and Next.js. If Claude (the underlying model) can understand it, Claude Code can work with it.
Who is Claude Code For?
- Developers who want to delegate repetitive coding tasks and focus on the harder problems
- IT professionals who write scripts and automation but aren’t full-time developers
- Small teams where one person needs to work across a whole stack
- Anyone learning to code who wants an expert to work through problems alongside them
What Does Claude Code Cost?
Claude Code is free to install. Usage is billed through your Anthropic API account on a pay-per-use basis — you pay for the tokens (text) processed. For typical development use, costs are modest. There’s also a Claude Code Max subscription plan for heavy users wanting predictable monthly billing.
How Do You Install It?
Claude Code requires Node.js and an Anthropic API key. See our step-by-step setup guides:
