Claude Code Docs

This quickstart guide will have you using AI-powered coding assistance in a few minutes. By the end, you’ll understand how to use Claude Code for common development tasks.

Before you begin

Make sure you have:

Step 1: Install Claude Code

To install Claude Code, use one of the following methods:

  • Native Install (Recommended)

  • Homebrew

  • WinGet

macOS, Linux, WSL:

Windows PowerShell:

Windows CMD:

If you see The token '&&' is not a valid statement separator, you’re in PowerShell, not CMD. If you see 'irm' is not recognized as an internal or external command, you’re in CMD, not PowerShell. Your prompt shows PS C:\ when you’re in PowerShell and C:\ without the PS when you’re in CMD.If the install command fails with syntax error near unexpected token '<', a 403, or another curl error, see Troubleshoot installation to match the error to a fix and for alternative install methods.Git for Windows is recommended on native Windows so Claude Code can use the Bash tool. If Git for Windows is not installed, Claude Code uses PowerShell as the shell tool instead. WSL setups do not need Git for Windows.

Homebrew offers two casks. claude-code tracks the stable release channel, which is typically about a week behind and skips releases with major regressions. claude-code@latest tracks the latest channel and receives new versions as soon as they ship.

You can also install with apt, dnf, or apk on Debian, Fedora, RHEL, and Alpine. To confirm the installation worked, run:

The command prints a version number followed by (Claude Code).

Step 2: Log in to your account

Claude Code requires an account to use. Start an interactive session with the claude command and you’ll be prompted to log in on first use:

For Claude subscription or Console accounts, follow the prompts to complete authentication in your browser. If you’ve set the ANTHROPIC_API_KEY environment variable, Claude Code skips the login prompt and asks you to approve the key instead. To switch accounts later or re-authenticate, type /login inside the running session:

You can log in using any of these account types:

Once logged in, your credentials are stored and you won’t need to log in again.

Step 3: Start your first session

Open your terminal in any project directory and start Claude Code:

Replace /path/to/your/project with the path to the project you want to work on. You’ll see the Claude Code prompt with the version, current model, and working directory shown above it. Type /help for available commands or /resume to continue a previous conversation.

Step 4: Ask your first question

Let’s start with understanding your codebase. Try one of these commands:

Claude will analyze your files and provide a summary. You can also ask more specific questions:

You can also ask Claude about its own capabilities:

Step 5: Make your first code change

Now let’s make Claude Code do some actual coding. Try a simple task:

Claude Code will:

  1. Find the appropriate file
  2. Show you the proposed changes
  3. Ask for your approval before changing files, depending on your permission mode
  4. Make the edit

Step 6: Use Git with Claude Code

Claude Code makes Git operations conversational:

You can also prompt for more complex Git operations:

Step 7: Fix a bug or add a feature

Claude is proficient at debugging and feature implementation. Describe what you want in natural language:

Or fix existing issues:

Claude Code will:

  • Locate the relevant code
  • Understand the context
  • Implement a solution
  • Run tests if available

Step 8: Test out other common workflows

There are a number of ways to work with Claude: Refactor code

Write tests

Update documentation

Code review

Essential commands

Here are the most important commands for daily use. Shell commands run from your terminal to start or resume Claude Code. Session commands run inside Claude Code after it starts. Shell commands

CommandWhat it doesExample
claudeStart interactive modeclaude
claude "task"Run a one-time taskclaude "fix the build error"
claude -p "query"Run one-off query, then exitclaude -p "explain this function"
claude -cContinue most recent conversation in current directoryclaude -c
claude -rResume a previous conversationclaude -r

Session commands

CommandWhat it doesExample
/clearClear conversation history/clear
/helpShow available commands/help
/exit or Ctrl+D twiceExit Claude Code/exit

See the CLI reference for the complete list of shell commands and the commands reference for the complete list of session commands.

Pro tips for beginners

For more, see best practices and common workflows.

What’s next?

Now that you’ve learned the basics, explore more advanced features:

Getting help

  • In Claude Code: Type /help or ask “how do I…”
  • Documentation: You’re here! Browse other guides
  • Community: Join our Discord for tips and support

Read the original on code.claude.com ↗