Claude Code Installation Guide

Choose your operating system and follow the steps to install Claude Code CLI

System Requirements

•Windows 10 or Windows 11
•Node.js 18+
•Network connection

Installation Steps

Install Node.js

Visit nodejs.org, download and install the LTS version.

After installation, open CMD and verify:

node --version

Install Claude Code

Open Command Prompt (CMD) or PowerShell and run:

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

Verify Installation

claude --version

Configure API Key

4.1 Get Auth Token

Visit LumeCoder Console and perform the following:

Click "Add Token"
Token name: Enter any name
Expiration: Leave empty (recommended)

4.2 Configure Environment Variables

Important: Replace ANTHROPIC_AUTH_TOKEN below with your API key from LumeCoder Console!

Temporary Environment Variables (Recommended)

Recommended

Valid for current session only. Choose based on your terminal:

CMD (Command Prompt):

set ANTHROPIC_AUTH_TOKEN=sk-xxx
set ANTHROPIC_BASE_URL=https://api.lumecoder.com
claude

PowerShell:

$env:ANTHROPIC_AUTH_TOKEN="sk-xxx"
$env:ANTHROPIC_BASE_URL="https://api.lumecoder.com"
claude

Note: Quick start, no restart needed. Variables are cleared when terminal closes.

settings.json Configuration (Permanent)

Config path: %USERPROFILE%\.claude\settings.json

{
  "env": {
    "ANTHROPIC_AUTH_TOKEN": "sk-xxx",
    "ANTHROPIC_BASE_URL": "https://api.lumecoder.com"
  },
  "permissions": {
    "allow": [],
    "deny": []
  }
}

Note: Config file is more secure. Restart Claude Code for changes to take effect.

Start Claude Code

If using settings.json configuration, navigate to your project directory first:

cd your-project-directory

Then, run the following command to start:

claude

First-time setup:

Select your preferred theme (press Enter)
Confirm security notice (press Enter)
Use default Terminal configuration (press Enter)
Trust the working directory (press Enter)
Start coding!

Troubleshooting

PowerShell Execution Policy Error

If you see this error:

cannot be loaded because running scripts is disabled on this system. For more information, see about_Execution_Policies...

Method 1 (Recommended): Remove restrictions for current user only

Run in PowerShell (Administrator):

Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Scope CurrentUser

Method 2: Temporary bypass

If you don't want to modify global policy, use npx directly:

npx @anthropic-ai/claude-code

This bypasses execution policy restrictions but requires npx every time.