Claude Code Setup

Installation

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

After installation, run claude to start it. Requires Node.js 18 or later.

Configure settings.json

Create the file ~/.claude/settings.json with the following content:

{
  "env": {
    "ANTHROPIC_BASE_URL": "https://tokenfly.com",
    "ANTHROPIC_AUTH_TOKEN": "sk-xxx",
    "ANTHROPIC_MODEL": "gpt-5.4",
    "ANTHROPIC_DEFAULT_SONNET_MODEL": "gpt-5.4",
    "ANTHROPIC_DEFAULT_OPUS_MODEL": "gpt-5.4",
    "ANTHROPIC_DEFAULT_HAIKU_MODEL": "gpt-5.4",
    "CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC": 1
  },
  "effortLevel": "medium"
}

Environment Variables

Variable	Purpose
`ANTHROPIC_BASE_URL`	Service gateway address
`ANTHROPIC_AUTH_TOKEN`	Access token
`ANTHROPIC_MODEL`	Default primary model
`ANTHROPIC_DEFAULT_SONNET_MODEL`	Model used for Sonnet scenarios
`ANTHROPIC_DEFAULT_OPUS_MODEL`	Model used for Opus scenarios
`ANTHROPIC_DEFAULT_HAIKU_MODEL`	Model used for Haiku scenarios
`CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC`	Disables non-essential network requests

About Non-Essential Network Requests

Setting CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC=1 disables the following types of outbound requests:

Telemetry and usage reporting
Version update checks
Usage data collection

Starting

Once configured, start Claude Code with:

claude