Design & media

China Image Gen

Try it

国内可用的文生图技能,基于硅基流动(SiliconFlow)API。Use when the user wants to generate images from text in China without VPN. Supports FLUX.1-schnell (free/fast), FLUX.1-dev...

What it does

基于硅基流动(SiliconFlow)API,国内直连,无需翻墙,支持支付宝/微信充值。 覆盖 FLUX.1、Kolors、SD3 等顶级模型,中文 prompt 直接可用。

The skill document

国内文生图 China Image Generator

基于硅基流动(SiliconFlow)API,国内直连,无需翻墙,支持支付宝/微信充值。 覆盖 FLUX.1、Kolors、SD3 等顶级模型,中文 prompt 直接可用。

触发时机

  • "帮我生成一张图片:..."
  • "画一张..."
  • "用 FLUX 生成..."
  • "生成一张[风格][内容]的图"

前置配置(首次使用)

1. 访问 cloud.siliconflow.cn,手机号注册(国内直连,新用户送免费额度)
2. 进入「API密钥」页面,创建并复制 API Key
3. 在 OpenClaw 中设置环境变量:
   export SILICONFLOW_API_KEY="sk-xxxxxxxxxxxxxxxx"
   或写入 ~/.openclaw/.env 文件

模型选择指南

根据用户需求选择最合适的模型:

追求速度/免费额度    → FLUX.1-schnell(最快,部分免费)
追求最高质量        → FLUX.1-dev(最佳效果,稍慢)
中文 prompt/人像    → Kolors(快手可图,中文理解最强)
图片含文字          → stable-diffusion-3-medium(文字渲染准确)
用户未指定          → 默认用 FLUX.1-schnell(速度快,效果好)

API 调用(curl,无需任何其他依赖)

基础调用(FLUX.1-schnell,最常用)

curl -s -X POST "https://api.siliconflow.cn/v1/images/generations" \
  -H "Authorization: Bearer $SILICONFLOW_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "black-forest-labs/FLUX.1-schnell",
    "prompt": "YOUR_PROMPT_HERE",
    "image_size": "1024x1024",
    "num_inference_steps": 20,
    "n": 1
  }'

Kolors(中文 prompt 最佳)

curl -s -X POST "https://api.siliconflow.cn/v1/images/generations" \
  -H "Authorization: Bearer $SILICONFLOW_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "Kwai-Kolors/Kolors",
    "prompt": "YOUR_PROMPT_HERE",
    "negative_prompt": "低质量, 模糊, 变形, 多余肢体",
    "image_size": "1024x1024",
    "num_inference_steps": 20,
    "guidance_scale": 7.5,
    "n": 1
  }'

FLUX.1-dev(最高质量)

curl -s -X POST "https://api.siliconflow.cn/v1/images/generations" \
  -H "Authorization: Bearer $SILICONFLOW_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "black-forest-labs/FLUX.1-dev",
    "prompt": "YOUR_PROMPT_HERE",
    "image_size": "1024x1024",
    "num_inference_steps": 30,
    "guidance_scale": 3.5,
    "n": 1
  }'

响应解析

# 成功响应示例:
{
  "images": [
    {
      "url": "https://cdn.siliconflow.cn/generated/xxx.png",
      "seed": 12345
    }
  ],
  "timings": { "inference": 2.3 }
}

# 提取图片 URL:
IMAGE_URL=$(curl -s ... | python3 -c "import sys,json; print(json.load(sys.stdin)['images'][0]['url'])")

# 或用 jq(如已安装):
IMAGE_URL=$(curl -s ... | jq -r '.images[0].url')

支持的尺寸规格

正方形:  1024x1024(默认,通用)
横版:    1280x720 / 1920x1080(16:9,适合壁纸/横幅)
竖版:    720x1280 / 1080x1920(9:16,适合手机/小红书)
小红书:  1080x1440(3:4,最推荐)
宽幅:    1440x1024(广告横幅)

Prompt 优化指南

中文 prompt 处理

Kolors 模型原生支持中文,直接输入即可。 FLUX 系列对英文理解更好,中文 prompt 时建议先翻译为英文再输入:

用户输入:一只橘猫在阳光下的咖啡馆里睡觉

→ Kolors 直接用中文:
  "一只橘猫在阳光下的咖啡馆里睡觉,温暖的光线,写实风格"

→ FLUX 翻译为英文:
  "An orange cat sleeping in a sunlit cafe, warm golden light,
   photorealistic style, shallow depth of field"

高质量 prompt 结构

[主体描述] + [风格/媒介] + [光线/氛围] + [技术参数]

示例:
  "Portrait of a young woman in traditional Chinese hanfu,
   standing in a bamboo forest, soft morning light,
   watercolor painting style, detailed brushwork,
   high quality, 8k resolution"

常用风格关键词

写实摄影:  photorealistic, DSLR photo, 85mm lens, bokeh
插画:      illustration, digital art, concept art
水彩:      watercolor painting, soft edges, pastel colors
油画:      oil painting, canvas texture, impasto
动漫:      anime style, Studio Ghibli, cel shading
国风:      Chinese ink painting, traditional Chinese art, 工笔画
赛博朋克:  cyberpunk, neon lights, dark city, rain
极简:      minimalist, clean background, simple composition

负向提示词(Kolors/SD3 使用)

通用负向提示词:
"低质量, 模糊, 变形, 多余肢体, 残缺手指, 畸形, 水印, 文字"

英文版:
"low quality, blurry, distorted, extra limbs, missing fingers,
deformed, watermark, text, bad anatomy, ugly"

执行流程

用户描述图片需求
  ↓
根据需求选择最佳模型
(中文/人像→Kolors,高质→FLUX-dev,快速→FLUX-schnell)
  ↓
优化/翻译 prompt(FLUX系列优先英文)
  ↓
确认尺寸规格(默认1024x1024)
  ↓
执行 curl 调用
  ↓
解析响应,获取图片 URL
  ↓
⚠️ 提示用户:URL 有效期1小时,请立即下载保存
  ↓
输出图片 URL + 生成参数(方便复现)

输出格式

🎨 图片生成完成
━━━━━━━━━━━━━━━━━━━━
模型:FLUX.1-schnell
尺寸:1024x1024
用时:约 X 秒

图片链接:
https://cdn.siliconflow.cn/generated/xxx.png

⚠️  链接有效期:1小时,请立即下载保存
     下载命令:curl -o output.png "上方链接"

生成参数(可复现):
  Prompt: "..."
  Steps: 20
  Seed: 12345

价格参考(硅基流动,2026年)

FLUX.1-schnell   :极低,部分规格免费
FLUX.1-dev       :约 ¥0.07/张(1024x1024)
Kolors           :极低,约 ¥0.03/张
SD3-Medium       :约 ¥0.07/张

新用户注册免费额度可生成数十至数百张图片
充值方式:支付宝 / 微信支付,最低充值 ¥10

常见错误处理

401 Unauthorized   → API Key 未配置或已过期,重新获取
429 Too Many Requests → 请求频率过高,稍等几秒后重试
400 Bad Request    → prompt 含违规内容,修改描述后重试
图片URL打不开       → URL 已超过1小时有效期,重新生成

注意事项

  • 生成图片 URL 有效期仅1小时,务必立即下载保存
  • 不支持生成涉及政治人物、暴力、色情等违规内容
  • FLUX 系列对英文 prompt 响应更好,Kolors 中英文均佳
  • 同一 seed 值可以复现相同图片(在相同参数下)

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