Gemini 3.1 Flash 图像生成 API | Search 增强接口

curl --request POST \
  --url https://geekapis.com/v1/images/generations \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
    "model": "gemini-3.1-flash-image",
    "prompt": "赛博朋克风格的城市夜景，霓虹灯闪烁",
    "size": "2752x1536",
    "response_format": "b64_json",
    "n": 1
  }'

curl --request POST \
  --url https://geekapis.com/v1/images/generations \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
    "model": "gemini-3.1-flash-image",
    "prompt": "保持角色风格，将背景替换为科幻太空站",
    "size": "1024x1024",
    "response_format": "b64_json",
    "n": 1,
    "image_urls": [
      {
        "url": "https://example.com/character.jpg"
      }
    ]
  }'

curl --request POST \
  --url https://geekapis.com/v1/images/generations \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
    "model": "gemini-3.1-flash-image",
    "prompt": "2025年最新款 iPhone 的产品展示图",
    "size": "1024x1024",
    "response_format": "b64_json",
    "n": 1,
    "tools": [
      {
        "type": "google_search",
        "search_types": ["web_search", "image_search"]
      }
    ]
  }'