Claude Code Guide

This page explains how to install Claude Code and configure settings.json for gateway URL, auth token, and compatibility flags.

1. Important Note

If Claude Code reports invalid beta flag, make sure CLAUDE_CODE_DISABLE_EXPERIMENTAL_BETAS=1 is set.

2. Install

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

If claude is not found, verify your npm global bin path is in PATH.

3. Configure

Open the config file:

vim ~/.claude/settings.json

Paste:

{
  "env": {
    "ANTHROPIC_BASE_URL": "https://api.letai.run",
    "ANTHROPIC_AUTH_TOKEN": "sk-xxxx",
    "CLAUDE_CODE_DISABLE_EXPERIMENTAL_BETAS": "1",
    "CLAUDE_CODE_ATTRIBUTION_HEADER": "0"
  }
}

Replace sk-xxxx with your real token.

4. Usage

Interactive:

claude

One-shot prompt:

claude "What is the capital of France?"

5. Troubleshooting

invalid beta flag: set CLAUDE_CODE_DISABLE_EXPERIMENTAL_BETAS to "1".
claude: command not found: reinstall package and check npm global bin path.
401 or auth errors: verify ANTHROPIC_AUTH_TOKEN and ANTHROPIC_BASE_URL.