Grok Nushell Prompt via `? Who are you?`

.config_nushell_config.nu

# Sample prompt for the custom Nushell command below: `? Who are you?` with a rather deterministic response like "I am Grok, an AI built by xAI."
def ? [...user_prompt_phrase: string, --model (-m): string = "grok-code-fast-1"] {
  let antrophic_ai_endpoint = "https://api.x.ai/v1/chat/completions"
  let user_prompt = ($user_prompt_phrase | str join " ")
  let body = {
    model: $model,
    messages: [
        { role: "system", content: "You answer as short as possible, with one word if possible. The response is intended to be rendered in a Nushell terminal." },
        { role: "user", content: $user_prompt }
    ],
    temperature: 0.0,
    stream: false
  }
  let ai_response = (http post --content-type application/json --headers {Authorization: $"Bearer ($env.XAI_API_KEY)"} $antrophic_ai_endpoint $body)
  $ai_response | get choices.0.message.content
}