Claude Code

Introduction

Unleash the power of Claude directly in your terminal. Search million-line codebases in an instant. Turn hours-long workflows into a single command. Your tools, your workflow, your codebase — evolving at the speed of thought.

• Official homepage: https://www.anthropic.com/claude-code

Features

How to Configure the AI Model

Step-by-step Guide for Windows

1. Install the Node.js environment

Claude Code requires a Node.js environment to run.

Steps to install Node.js

• Open your browser and go to https://nodejs.org/
• Click the "LTS" version to download (the long-term support version is recommended)
• Once downloaded, double-click the .msi file
• Follow the installation wizard to complete the installation, keeping the default settings

Notes for Windows

• We recommend using PowerShell instead of CMD
• If you run into permission issues, try running as administrator
• Some antivirus software may produce false positives, in which case you need to add it to the whitelist

Verify the installation

After installation, open PowerShell or CMD and enter the following commands:

node --version
npm --version

If a version number is displayed, the installation was successful.

2. Install Git Bash

Notes for Windows

On Windows, you need to use Git Bash to install Claude Code. After installation, setting the environment variables and using Claude Code is still done in regular PowerShell or CMD.

Download and install Git for Windows

• Go to https://git-scm.com/downloads/win
• Click "Download for Windows" to download the installer
• Run the downloaded .exe installer
• Keep the default settings during installation and click "Next" to complete the installation

Verify the Git Bash installation

After installation, open Git Bash and enter the following command to verify:

git --version

If a version number is displayed, the installation was successful.

3. Install Claude Code

Install Claude Code

Open PowerShell and run the following command:

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

This command downloads and installs the latest version of Claude Code from the official npm registry.

Add ~/.local/bin to PATH (only if prompted)

[Environment]::SetEnvironmentVariable('Path', ([Environment]::GetEnvironmentVariable('Path','User') + ";$HOME\.local\bin"), 'User')

Verify the Claude Code installation

After installation, enter the following command to check whether it was installed successfully:

claude --version

If a version number is displayed, congratulations! Claude Code has been installed successfully.

4. Set the environment variables

One-click setup command (Windows)

To let Claude Code connect to your relay service, you need to set several environment variables:

curl -fsSL https://your-domain/cli/install.sh | sh

5. Start using Claude Code

You can now start using Claude Code!

Launch Claude Code

Open PowerShell and launch Claude Code directly:

claude

To use it in a specific project:

# Go to your project directory
cd C:\path\to\your\project

# Launch Claude Code
claude

Select a model

Enter the command:

/model

Press Enter to open it and select a model; the default setting is usually fine.

Note: After modifying the environment variables, all models (including the official preset models) will use your custom endpoint instead of your official account quota.

Step-by-step Guide for macOS

1. Install the Claude Code CLI

Open Terminal.app

Install Claude Code

Open the terminal and run the following command:

curl -fsSL https://claude.ai/install.sh | bash

Optional: run the provided command if prompted

echo 'export PATH="$HOME/.local/bin:$PATH"' >> ~/.bashrc && source ~/.bashrc

2. Set the environment variables

To let Claude Code connect to a third-party relay service, you need to set environment variables:

One-click setup of the Claude Code environment variables

Enter the command:

curl -fsSL https://your-domain/cli/install.sh | sh

Verify the Claude Code installation

After installation, enter the following command to check whether it was installed successfully:

claude --version

If a version number is displayed, congratulations! Claude Code has been installed successfully.

3. Start using Claude Code

You can now start using Claude Code!

Launch Claude Code

Launch Claude Code directly:

claude

To use it in a specific project:

# Go to your project directory
cd /path/to/your/project

# Launch Claude Code
claude

Select a model (optional)

Enter the command:

/model

Press Enter to open it and select an official model; the default model is usually fine.

Note: After modifying the ANTHROPIC_BASE_URL environment variable, all models (including the official preset models) will use your custom endpoint instead of your official account quota.

4. Troubleshooting on macOS

macOS security settings block it from running

If the system blocks Claude Code from running:

• Open "System Preferences" → "Security & Privacy"
• Click "Open Anyway" or "Allow"
• Or run this in the Terminal: sudo spctl --master-disable

Step-by-step Guide for Linux

1. Install Claude Code

Install Claude Code

Open the terminal and run the following command:

curl -fsSL https://claude.ai/install.sh | bash

If you run into permission issues, you can use sudo:

sudo curl -fsSL https://claude.ai/install.sh | bash

Verify the Claude Code installation

After installation, enter the following command to check whether it was installed successfully:

claude --version

If a version number is displayed, congratulations! Claude Code has been installed successfully.

2. Set the environment variables

To let Claude Code connect to your relay service, you need to set two environment variables:

One-click modification of the environment variables

Enter the command:

curl -fsSL https://your-domain/cli/install.sh | sh

3. Start using Claude Code

You can now start using Claude Code!

Launch Claude Code

Launch Claude Code directly:

claude

To use it in a specific project:

# Go to your project directory
cd /path/to/your/project

# Launch Claude Code
claude

Select a model

Enter the command:

/model

Press Enter to open it and select an official model; the default model is usually fine.

Note: After modifying the ANTHROPIC_BASE_URL environment variable, all models (including the official preset models) will use your custom endpoint instead of your official account quota.

4. Troubleshooting on Linux

Missing dependency libraries

Some Linux distributions require additional dependencies:

# Ubuntu/Debian
sudo apt install build-essential

# CentOS/RHEL
sudo dnf groupinstall "Development Tools"

Environment variables not taking effect

Check the following:

• Confirm you modified the correct configuration file (.bashrc or .zshrc)
• Restart the terminal or run source ~/.bashrc
• Verify the setting: echo $ANTHROPIC_BASE_URL