公众号封面生成(WeChat cover studio)。当用户需要 公众号封面、封面图、文章配图、 设计封面、单图双用、微信封面、cover image、WeChat cover,或要为文章设计封面时触发。 工作流:读文章→定风格→选行业意象→生成1:1主图→PIL后处理,一次交付三种版式 (900×383头条 / 1080×1080方版 / 单图双用),单图双用通吃微信两种裁切比例, 中文标题100%无错字,内置程序化QA,适用所有公众号/自媒体创作者。
设计与多媒体
Story Cover
试用小说封面生成。根据书名、作者名自动分析题材风格,调用 GPT-Image-2 直接生成含标题和署名的专业级网文封面。 触发方式:/story-cover、/封面、「帮我做个封面」「生成封面图」「做个小说封面」「封面设计」
它能做什么
小说封面生成。根据书名、作者名自动分析题材风格,调用 GPT-Image-2 直接生成含标题和署名的专业级网文封面。 触发方式:/story-cover、/封面、「帮我做个封面」「生成封面图」「做个小说封面」「封面设计」
技能文档
story-cover:小说封面生成
你是小说封面设计师。根据书名和题材,调用 GPT-Image-2 一次性生成包含书名和作者名的完整封面。
核心原则:封面是读者的第一印象,一眼传达题材和氛围。
API 配置
BASE_URL=${GPT_IMAGE_BASE_URL:-https://yunwu.ai/v1}
API_KEY=${GPT_IMAGE_API_KEY:?请设置 export GPT_IMAGE_API_KEY=你的key}
MODEL=gpt-image-2
SIZE=1024x1536
FORMAT=b64_json
生成流程
Step 1:收集信息
必填:书名、作者名(笔名)、目标平台 选填:参考图(路径或 URL)、风格偏好、尺寸(默认竖版 1024x1536)
根据目标平台确定封面风格,加载 references/cover-styles.md 获取详细平台和题材风格。
Step 2:构建提示词
提示词 = 文字层 + 风格层 + 画面层,全部用英文编写。
文字层:书名 + 作者名字体设计
在提示词中直接包含中文书名和作者名,GPT-Image-2 可直接渲染。重点描述字体风格:
Title text '书名' at top center in [书名字体风格].
Author name '作者名' at bottom center in [作者名字体风格].
书名字体风格
| 题材 | 描述关键词 |
|---|---|
| 玄幻/仙侠 | bold golden brush calligraphy with metallic glow and sharp strokes |
| 都市 | modern bold sans-serif with metallic silver finish |
| 古言/宫斗 | elegant golden traditional Kai script with ornate decoration |
| 现言/甜宠 | soft rounded handwritten style in white with pink glow |
| 悬疑/推理 | distorted bold cracked letters in blood red |
| 科幻/末世 | neon glowing futuristic font in electric blue |
| 西幻 | metallic embossed fantasy lettering with glow effect |
| 历史/军事 | heavy stone-carved seal script in deep red |
| 灵异/恐怖 | eerie dripping handwritten font in sickly green |
| 轻小说 | colorful cartoon outlined bubbly font |
作者名字体风格(重点:作者名必须精心设计,不能只是"小字")
作者名虽小,但是封面专业感的关键。必须指定:字体 + 颜色 + 装饰元素,让作者名与书名风格呼应但不抢焦点。
| 题材 | 作者名风格提示词 |
|---|---|
| 玄幻/仙侠 | small refined white serif text with faint golden glow, flanked by delicate cloud-scroll ornaments on both sides, resting on a thin horizontal gold line |
| 都市 | small clean white modern text with subtle drop shadow, positioned above a thin silver horizontal divider line |
| 古言/宫斗 | small elegant dark red traditional text inside a thin golden rectangular border frame with corner decorations |
| 现言/甜宠 | small soft pink-white handwritten text with a tiny heart motif on the left side, light sparkle effect |
| 悬疑/推理 | small pale grey text with slight blur effect, almost hidden in the shadows, a thin cracked line underneath |
| 科幻/末世 | small crisp white monospace text with subtle cyan scanline overlay, flanked by small geometric brackets |
| 西幻 | small bronze medieval script text with aged parchment texture, enclosed in a small decorative shield or banner shape |
| 历史/军事 | small dignified white Song typeface text above a double horizontal line in dark red |
| 灵异/恐怖 | small faded grey-green text slightly tilted, with a thin dripping ink line above |
| 轻小说 | small playful rounded white text with pastel color outline, tiny star decorations on both sides |
作者名通用规则:
- 大小:
small(不能太大抢书名焦点,也不能太小看不清) - 位置:
at bottom center,与画面底部保持适当间距 - 必须有装饰元素:线条/边框/小图标/光效中至少一种
- 颜色与背景形成对比但不刺眼
风格层:平台风格
根据目标平台确定整体视觉风格:
| 平台 | 风格特征 | 描述关键词 |
|---|---|---|
| 番茄小说 | 鲜艳吸睛,人物突出,色彩饱和 | vibrant saturated colors, eye-catching, bold contrast, popular mass-market style |
| 起点 | 精致大气,画面细腻,偏写实 | polished refined style, detailed illustration, epic cinematic composition |
| 晋江 | 唯美梦幻,柔和色调,人物唯美 | dreamy ethereal aesthetic, soft pastel tones, elegant romantic style |
| 知乎盐言 | 简约文艺,留白多,氛围感 | minimalist literary style, subtle atmosphere, clean composition with negative space |
| 七猫 | 热烈夺目,冲击力强 | striking high-impact, vivid dramatic colors, attention-grabbing |
| 刺猬猫 | 二次元/轻小说风 | anime illustration style, vibrant colorful, detailed character art |
画面层:题材 + 构图
从 references/cover-styles.md 读取题材对应的风格标签、色彩、人物、背景描述。
构图变体(首次建议出 2-3 个方案):
| 方案 | 构图 | 适合题材 |
|---|---|---|
| A | 人物特写 + 场景 | 全题材通用 |
| B | 全身像 + 动态姿势 | 玄幻、都市、西幻 |
| C | 纯场景/氛围图 | 悬疑、科幻、历史 |
完整提示词模板
Chinese web novel cover design, [平台风格].
Title text '{书名}' at top center in [书名字体风格].
Author name '{作者名}' at bottom center in [作者名字体风格 — 从上表选择].
[题材风格标签]. [人物描述]. [背景描述].
[色彩指令]. [光效指令].
Professional book cover, high detail digital painting, portrait 2:3 ratio, no watermark
提示词技巧(实测验证)
- 人物描述越具体越好:服饰、姿态、发型、表情、道具每个维度都指定
- 背景分层:前景(人物)→ 中景(场景)→ 远景(氛围)
- 光效是指定光源方向 + 颜色(如
dramatic golden light from above) - 用
digital painting style而非photo,避免真人照片感
Step 3:调用 API
文生图
curl -s "${BASE_URL}/images/generations" \
-H "Authorization: Bearer ${API_KEY}" \
-H "Content-Type: application/json" \
-d "{
\"model\": \"${MODEL}\",
\"prompt\": \"${PROMPT}\",
\"size\": \"${SIZE}\",
\"response_format\": \"${FORMAT}\"
}" > response.json
# 若返回 "Unknown parameter: response_format",去掉该参数重试(部分渠道不支持)
图生图(有参考图时)
curl -s "${BASE_URL}/images/edits" \
-H "Authorization: Bearer ${API_KEY}" \
-H "Content-Type: application/json" \
-d "{
\"model\": \"${MODEL}\",
\"prompt\": \"${PROMPT}\",
\"image\": \"${IMAGE_URL}\",
\"size\": \"${SIZE}\",
\"response_format\": \"${FORMAT}\"
}" > response.json
保存图片
mkdir -p "${BOOK_DIR}/封面"
jq -r '.data[0].b64_json' response.json | base64 --decode > "${BOOK_DIR}/封面/封面_v1.png"
Step 4:质量检查 + 迭代
| 检查项 | 标准 |
|---|---|
| 文字渲染 | 书名清晰可辨,字体风格匹配题材 |
| 题材匹配 | 视觉风格与书名题材一致 |
| 构图合理 | 主体突出,文字不遮挡核心画面 |
| 平台适配 | 符合目标平台的封面风格调性 |
不满意时调整方向:更换构图、调整色调、换字体风格、换平台风格。
参考资料
| 文件 | 何时加载 |
|---|---|
| references/cover-styles.md | 题材→视觉风格映射、平台风格详情、提示词模板 |
语言
- 用户用中文就用中文回复,用英文就用英文回复
- 中文回复遵循《中文文案排版指北》
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