From here.

First, make sure you have “node.js“ and “git“ installed.

Install Claude Code

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

Get the API key

In my case, I use “DeepSeek“. You can use other LLM model providers(such as “kimi“) as well.

Setup Claude Code to use the API key

Update the “~/.claude/settings.json” file with the following content:

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{
  "env": {
    "ANTHROPIC_BASE_URL": "https://api.deepseek.com/anthropic",
    "ANTHROPIC_AUTH_TOKEN": "YOUR API KEY",
    "ANTHROPIC_MODEL": "deepseek-chat",
    "ANTHROPIC_SMALL_FAST_MODEL": "deepseek-chat",
    "CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC": "1"
  }
}

Open terminal, create a directory, get into it, and type “claude” to open the cli tool. If everything works, you should be able to play.