通用对话接口（非流式）

curl --request POST \
  --url https://api.magickapi.com/v1/chat/completions \
  --header 'Authorization: Bearer YOUR_API_KEY' \
  --header 'Content-Type: application/json' \
  --data '{
    "model": "gpt-5",
    "stream": false,
    "messages": [
      {
        "role": "system",
        "content": "你是一个专业的 AI 助手。"
      },
      {
        "role": "user",
        "content": "介绍一下人工智能的发展历史。"
      }
    ]
  }'

{
  "id": "chatcmpl_123",
  "object": "chat.completion",
  "created": 1712345678,
  "model": "gpt-5",
  "choices": [
    {
      "index": 0,
      "message": {
        "role": "assistant",
        "content": "人工智能的发展历史通常从 20 世纪 50 年代开始讨论。"
      },
      "finish_reason": "stop"
    }
  ],
  "usage": {
    "prompt_tokens": 28,
    "completion_tokens": 20,
    "total_tokens": 48
  }
}

{
  "error": {
    "message": "Invalid request",
    "type": "invalid_request_error",
    "param": null,
    "code": "invalid_request"
  }
}