Claude Code CLI Guide 2026 — Install, Configure API Key & Run

About the product used in this article

The installation, configuration, and usage steps in this article are based on the [Claude Code] product provided by ngaicode.

We offer [Claude Code] plans starting from $1.50. After purchasing any plan, you’ll receive an API KEY with a detailed tutorial. If you encounter any issues during installation, setup, or use, our support team is always available to help.

To subscribe to [Claude Code], view plans and pricing at the Claude Code product page or contact customer support to place an order.

Contact us: WhatsApp Contact us — PayPal & USDT TRC20 payments accepted. Replies within 5 minutes during business hours (9:00–24:00 UTC+7).

1: Claude Code CLI — Install, Configure, and Use

1.1 Install Claude Code CLI

# MacOS, Linux, WSL
curl -fsSL https://claude.ai/install.sh | bash

# Windows PowerShell
irm https://claude.ai/install.ps1 | iex

# Windows CMD
curl -fsSL https://claude.ai/install.cmd -o install.cmd && install.cmd && del install.cmd

1.2 Configure the Claude CLI KEY

{
  "env": {
    "ANTHROPIC_API_KEY": "replace with your API key",
    "ANTHROPIC_AUTH_TOKEN": "replace with your API key",
    "ANTHROPIC_BASE_URL": "https://api.ccpro.cn",
    "CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC": "1"
  },
  "permissions": {
    "allow": [],
    "deny": []
  }
}

1.3 Using Claude

Once configuration is complete, just run claude in your terminal and you’re ready to go.

2: Use Alongside the Claude App

We recommend using CCswitch or similar tools to manage and switch configurations easily. See the tutorial for details: See the App tutorial for configuring CCswitch

3: Troubleshooting

Q: Official Documentation

Official Documentation

Q: Check KEY Usage / Quota

Click the link below and enter your KEY to check quota usage. Quota usage matches the official version 1:1.

https://ngaicode.com/en/key-usage/

Q: List of Available Models

View available models for Claude

When you start a conversation, the key is activated automatically. After that, you’ll be able to view the list of models. For example:

Related Resources

• ngaicode Claude Code page — see pricing / order
• ngaicode Home — hub for AI Coding Tools
• ngaicode Cursor page
• ngaicode Codex page
• WhatsApp Contact us

Ready to Get Claude Code CLI?

3 simple steps: Pick a Claude Code plan → Scan PromptPay / PayPal → Receive your API key instantly

1. Order Claude Code from ngaicode: ngaicode Claude Code page — plans start at $1.50 / month
2. Questions / orders: WhatsApp Contact us — real human reply within 5 minutes
3. See all 3 AI coding tools: ngaicode Home — Cursor / Codex / Claude Pro