Claude Code

1. Install Node.js (Skip if installed)

Ensure Node.js version ≥ 18.0

Windows
macOS
Ubuntu / Debian

Download: https://nodejs.org/dist/v22.18.0/node-v22.18.0-x64.msi

sudo xcode-select --install
/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
brew install node
node --version

curl -fsSL https://deb.nodesource.com/setup_lts.x | sudo bash -
sudo apt-get install -y nodejs
node --version

Uninstall Other Proxy Clients (Optional)

Check installation:

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

Uninstall:

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

2. Install Claude Code

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

Verify installation:

claude --version

3. Get API Key

base_url = "https://api.leapx-hub.com"
api_key = "sk-zbTYx*******************************fceTvn5"

4. Configure Environment Variables

Basic Configuration Example

Mac / Linux
Windows CMD
Windows PowerShell

export ANTHROPIC_BASE_URL="https://api.leapx-hub.com"
export ANTHROPIC_AUTH_TOKEN="sk-zbTYx*******************************fceTvn5"
export ANTHROPIC_MODEL="kimi-k2-250905"
cd your-project-folder
claude

set ANTHROPIC_BASE_URL=https://api.leapx-hub.com
set ANTHROPIC_AUTH_TOKEN=sk-zbTYx*******************************fceTvn5
set ANTHROPIC_MODEL=kimi-k2-250905
cd your-project-folder
claude

$env:ANTHROPIC_BASE_URL="https://api.leapx-hub.com"
$env:ANTHROPIC_AUTH_TOKEN="sk-zbTYx*******************************fceTvn5"
$env:ANTHROPIC_MODEL="kimi-k2-250905"
cd your-project-folder
claude

Dual Model Configuration

Claude Code uses a dual-threaded model architecture by default:

Main Thread Model: Configured via ANTHROPIC_MODEL environment variable
- Used for primary code generation, conversations, and complex task processing
Secondary Thread Model: Configured via ANTHROPIC_DEFAULT_HAIKU_MODEL environment variable
- Purpose: Lightweight / fast-task model
- Use cases:
  - Background tasks (file monitoring, linter checks, etc.)
  - Quick responses (simple questions, completion suggestions)
  - Low-priority auxiliary tasks

Basic Configuration (Dual Model, Recommended)

Mac / Linux
Windows CMD
Windows PowerShell

export ANTHROPIC_BASE_URL="https://api.leapx-hub.com"
export ANTHROPIC_AUTH_TOKEN="sk-zbTYx*******************************fceTvn5"
export ANTHROPIC_MODEL="kimi-k2-250905"
export ANTHROPIC_DEFAULT_HAIKU_MODEL="claude-haiku-4-5-20251001"
cd your-project-folder
claude

set ANTHROPIC_BASE_URL=https://api.leapx-hub.com
set ANTHROPIC_AUTH_TOKEN=sk-zbTYx*******************************fceTvn5
set ANTHROPIC_MODEL=kimi-k2-250905
set ANTHROPIC_DEFAULT_HAIKU_MODEL=claude-haiku-4-5-20251001
cd your-project-folder
claude

$env:ANTHROPIC_BASE_URL="https://api.leapx-hub.com"
$env:ANTHROPIC_AUTH_TOKEN="sk-zbTYx*******************************fceTvn5"
$env:ANTHROPIC_MODEL="kimi-k2-250905"
$env:ANTHROPIC_DEFAULT_HAIKU_MODEL="claude-haiku-4-5-20251001"
cd your-project-folder
claude

Single Model Configuration (Optional)

If you only need to use a single model, there are two configuration methods: Method 1: Configure both environment variables to the same model Set both ANTHROPIC_MODEL and ANTHROPIC_DEFAULT_HAIKU_MODEL to the same model (for example, both use kimi-k2-250905):

Mac / Linux
Windows CMD
Windows PowerShell

export ANTHROPIC_BASE_URL="https://api.leapx-hub.com"
export ANTHROPIC_AUTH_TOKEN="sk-zbTYx*******************************fceTvn5"
export ANTHROPIC_MODEL="kimi-k2-250905"
export ANTHROPIC_DEFAULT_HAIKU_MODEL="kimi-k2-250905"
cd your-project-folder
claude

set ANTHROPIC_BASE_URL=https://api.leapx-hub.com
set ANTHROPIC_AUTH_TOKEN=sk-zbTYx*******************************fceTvn5
set ANTHROPIC_MODEL=kimi-k2-250905
set ANTHROPIC_DEFAULT_HAIKU_MODEL=kimi-k2-250905
cd your-project-folder
claude

$env:ANTHROPIC_BASE_URL="https://api.leapx-hub.com"
$env:ANTHROPIC_AUTH_TOKEN="sk-zbTYx*******************************fceTvn5"
$env:ANTHROPIC_MODEL="kimi-k2-250905"
$env:ANTHROPIC_DEFAULT_HAIKU_MODEL="kimi-k2-250905"
cd your-project-folder
claude

Method 2: Switch main thread model after startup Keep environment variables configured as in “Basic Configuration (Dual Model)”. After starting Claude Code, in the interactive interface, enter:

/model haiku

The main thread will switch to use the model configured by ANTHROPIC_DEFAULT_HAIKU_MODEL (i.e., claude-haiku-4-5-20251001).

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Coding

Tech Engineering

Translation

1. Install Node.js (Skip if installed)

Uninstall Other Proxy Clients (Optional)

2. Install Claude Code

3. Get API Key

4. Configure Environment Variables

Basic Configuration Example

Dual Model Configuration

Basic Configuration (Dual Model, Recommended)

Single Model Configuration (Optional)

​1. Install Node.js (Skip if installed)

​Uninstall Other Proxy Clients (Optional)

​2. Install Claude Code

​3. Get API Key

​4. Configure Environment Variables

​Basic Configuration Example

​Dual Model Configuration

​Basic Configuration (Dual Model, Recommended)

​Single Model Configuration (Optional)

1. Install Node.js (Skip if installed)

Uninstall Other Proxy Clients (Optional)

2. Install Claude Code

3. Get API Key

4. Configure Environment Variables

Basic Configuration Example

Dual Model Configuration

Basic Configuration (Dual Model, Recommended)

Single Model Configuration (Optional)