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Download Claude Code

Claude Code is downloaded and installed via npm with a single command. The installation process is fast and works across all major operating systems with Node.js support.

Quick Installation

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

Prerequisites:

  • Node.js 18.0 or higher
  • Internet connection for installation and operation
  • Claude subscription or Anthropic API key

Post-Installation Setup

After installation, configure Claude Code with your authentication:

claude config

This helps you configure your settings and authentication.

Verification

Verify your installation with:

claude --version
which claude

I always verify the installation immediately to ensure Claude Code is properly installed and accessible from any terminal location.

System Requirements

  • Operating Systems: macOS, Windows, Linux (with Node.js support)
  • Node.js: Version 18.0 or higher
  • Network: Internet connection required for installation and operation

Troubleshooting

Permission Issues - Use sudo npm install -g @anthropic-ai/claude-code on macOS/Linux if permission errors occur.

Node.js Version - Update Node.js if you encounter version compatibility errors.

Network Issues - Check firewall settings if download fails.

Quick Start

After installation, run claude config immediately to set up authentication, then test with claude --help to see available commands.

See Also: Download for Windows|Download for Mac|Installation Guide