thumbnail-creator

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English
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Chinese

Thumbnail Creator

Thumbnail Creator

Generate professional YouTube thumbnails using AI. This skill connects to the Thumbnail Creator API to create thumbnails, analyze videos, manage creative assets, and generate SEO content.
使用AI生成专业的YouTube缩略图。本Skill对接Thumbnail Creator API,可创建缩略图、分析视频、管理创意资产并生成SEO内容。

Setup

配置步骤

Before using this skill, ensure you have:
  1. A Thumbnail Creator account at https://app.thumbcraft.io
  2. An API key from Settings → Developers → API Keys
使用本Skill前,请确保您已准备好:
  1. https://app.thumbcraft.io 注册的Thumbnail Creator账号
  2. 从「设置 → 开发者 → API密钥」获取的API密钥

MCP Configuration (Recommended)

MCP配置(推荐)

Add to your Claude Desktop config (
~/Library/Application Support/Claude/claude_desktop_config.json
on macOS):
json
{
  "mcpServers": {
    "thumbnail-creator": {
      "url": "https://app.thumbcraft.io/api/mcp",
      "headers": {
        "Authorization": "Bearer YOUR_API_KEY"
      }
    }
  }
}
将以下内容添加到您的Claude Desktop配置文件中(macOS路径:
~/Library/Application Support/Claude/claude_desktop_config.json
):
json
{
  "mcpServers": {
    "thumbnail-creator": {
      "url": "https://app.thumbcraft.io/api/mcp",
      "headers": {
        "Authorization": "Bearer YOUR_API_KEY"
      }
    }
  }
}

REST API

REST API

Base URL:
https://app.thumbcraft.io/api/v1
All requests require the header:
Authorization: Bearer YOUR_API_KEY
基础URL:
https://app.thumbcraft.io/api/v1
所有请求均需携带以下请求头:
Authorization: Bearer YOUR_API_KEY

Available Tools

可用工具

Thumbnail Generation

缩略图生成

generate_thumbnail

generate_thumbnail

Create a thumbnail from a text description.
Parameters:
  • prompt
    (required): Detailed description of the thumbnail
  • youtube_url
    (optional): YouTube URL for context
  • style_id
    (optional): Apply a saved style
  • face_ids
    (optional): Array of face IDs to include
  • brand_id
    (optional): Brand ID for colors/logo
  • aspect_ratio
    (optional): "16:9" (default) or "9:16"
Best practices for prompts:
  • Be specific about composition, colors, and emotions
  • Mention text overlays explicitly if needed
  • Describe the main subject's expression and pose
  • Include background details
Example:
Generate a thumbnail with a surprised man looking at a giant golden trophy.
Bold yellow text says "I WON". Dark gradient background with sparkles.
Photorealistic style, dramatic lighting.
根据文本描述生成缩略图。
参数:
  • prompt
    (必填):缩略图的详细描述
  • youtube_url
    (可选):用于获取上下文的YouTube视频链接
  • style_id
    (可选):应用已保存的风格
  • face_ids
    (可选):要包含的人脸ID数组
  • brand_id
    (可选):用于配色/Logo的品牌ID
  • aspect_ratio
    (可选):比例,默认"16:9",可选"9:16"
提示词最佳实践:
  • 明确说明构图、色彩和情绪
  • 若需要文字叠加,请明确提及
  • 描述主体的表情和姿势
  • 包含背景细节
示例:
生成一张缩略图,画面中有一名惊讶的男子看着一个巨大的金色奖杯。
醒目的黄色文字写着“我赢了”。背景为深色渐变并带有闪光效果。
写实风格,戏剧性打光。

analyze_video

analyze_video

Analyze a YouTube video and get 5 thumbnail concepts with prompts.
Parameters:
  • youtube_url
    (required): Full YouTube URL
Returns: Video summary and 5 thumbnail concepts with:
  • Title and description
  • Ready-to-use generation prompt
  • Emotional hook explanation
分析YouTube视频,提供5个带提示词的缩略图创意。
参数:
  • youtube_url
    (必填):完整的YouTube视频链接
**返回内容:**视频摘要及5个缩略图创意,每个创意包含:
  • 标题和描述
  • 可直接使用的生成提示词
  • 情绪钩子说明

Asset Management

资产管理

list_faces

list_faces

Get uploaded face models for personalized thumbnails.
Parameters:
  • active_only
    (optional): Only return trained faces
获取已上传的人脸模型,用于个性化缩略图。
参数:
  • active_only
    (可选):仅返回已训练完成的人脸

create_face

create_face

Create a new face from an image URL. Requires training before use.
Parameters:
  • name
    (required): Display name
  • image_url
    (required): Clear face photo URL
通过图片URL创建新的人脸模型,使用前需完成训练。
参数:
  • name
    (必填):显示名称
  • image_url
    (必填):清晰的人脸照片链接

list_styles

list_styles

Get saved thumbnail styles to apply to generations.
获取已保存的缩略图风格,可应用于生成任务。

list_brands

list_brands

Get brand assets (logos, colors) for consistent branding.
获取品牌资产(Logo、配色),确保品牌一致性。

list_thumbnails

list_thumbnails

Get recent generated thumbnails.
Parameters:
  • limit
    (optional): Number to return (default: 10)
获取最近生成的缩略图。
参数:
  • limit
    (可选):返回数量(默认:10)

SEO Tools

SEO工具

generate_seo_titles

generate_seo_titles

Generate 10 SEO-optimized video titles from a YouTube URL.
Parameters:
  • youtube_url
    (required): YouTube video URL
Returns: 10 titles with style labels:
  • Search-Driven (keyword-focused)
  • Curiosity/Viral (click-driving)
  • Authority/Expertise (trust-building)
  • Emotional/Story (connection)
  • Contrarian/Controversial (attention-grabbing)
根据YouTube视频链接生成10个SEO优化的视频标题。
参数:
  • youtube_url
    (必填):YouTube视频链接
**返回内容:**10个带风格标签的标题:
  • 搜索导向(关键词聚焦)
  • 好奇/ viral(吸引点击)
  • 权威/专业(建立信任)
  • 情感/故事(建立连接)
  • 反向/争议(吸引注意力)

generate_seo_description

generate_seo_description

Generate a complete video description.
Parameters:
  • youtube_url
    (required): YouTube video URL
Returns structured description with:
  • Hook (2 engaging sentences)
  • About This Video (150-200 word summary)
  • Key Takeaways (3-5 bullet points)
  • Timestamps/Chapters (6-10 sections)
  • Notable Quotes (1-2)
  • SEO Hashtags (3-5)
生成完整的视频描述。
参数:
  • youtube_url
    (必填):YouTube视频链接
返回结构化描述,包含:
  • 钩子(2句吸引人的句子)
  • 视频介绍(150-200字摘要)
  • 核心要点(3-5个项目符号)
  • 时间戳/章节(6-10个部分)
  • 精彩语录(1-2条)
  • SEO标签(3-5个)

get_credits

get_credits

Check remaining credit balance.
查询剩余信用额度。

Workflows

工作流

Generate Thumbnail from YouTube Video

从YouTube视频生成缩略图

  1. Call
    analyze_video
    with the YouTube URL
  2. Present the 5 concepts to the user
  3. Let user pick a concept or provide feedback
  4. Call
    generate_thumbnail
    with the chosen concept's prompt
  5. Optionally apply a style or include faces
  1. 调用
    analyze_video
    并传入YouTube视频链接
  2. 向用户展示5个创意选项
  3. 让用户选择创意或提供反馈
  4. 使用选中创意的提示词调用
    generate_thumbnail
  5. 可选择性应用风格或添加人脸

Create Thumbnails with Consistent Style

创建风格一致的缩略图

  1. Call
    list_styles
    to show available styles
  2. Let user pick a style or describe a new one
  3. Call
    generate_thumbnail
    with
    style_id
    parameter
  1. 调用
    list_styles
    展示可用风格
  2. 让用户选择风格或描述新风格
  3. 携带
    style_id
    参数调用
    generate_thumbnail

Full YouTube Optimization

完整YouTube内容优化

  1. Call
    analyze_video
    for thumbnail concepts
  2. Generate thumbnail with
    generate_thumbnail
  3. Call
    generate_seo_titles
    for title options
  4. Call
    generate_seo_description
    for the description
  5. Present complete package: thumbnail + title + description
  1. 调用
    analyze_video
    获取缩略图创意
  2. 使用
    generate_thumbnail
    生成缩略图
  3. 调用
    generate_seo_titles
    获取标题选项
  4. 调用
    generate_seo_description
    生成描述
  5. 向用户展示完整套餐:缩略图+标题+描述

Tips for Best Results

最佳效果提示

Thumbnail Prompts

缩略图提示词

  • Be specific: "A woman with wide eyes and open mouth" > "surprised person"
  • Describe lighting: "dramatic side lighting", "soft natural light"
  • Mention style: "photorealistic", "3D rendered", "illustrated"
  • Include text carefully: Specify exact text, font style, and placement
  • Consider contrast: High contrast between subject and background
  • 具体明确:“睁大眼睛、张开嘴巴的女性”优于“惊讶的人”
  • 描述光线:“戏剧性侧光”、“柔和自然光”
  • 提及风格:“写实”、“3D渲染”、“插画风格”
  • 谨慎添加文字:明确指定文字内容、字体风格和位置
  • 考虑对比度:主体与背景需有高对比度

Using Faces

人脸使用

  • Faces must be trained before use (check
    trainingStatus
    )
  • Use
    face_ids
    array to include multiple people
  • The AI will match the face to the described expression
  • 人脸模型需训练完成后才能使用(查看
    trainingStatus
  • 使用
    face_ids
    数组可添加多个人脸
  • AI会将人脸与描述的表情匹配

Using Styles

风格使用

  • Styles capture visual aesthetics from reference images
  • Great for maintaining channel consistency
  • Combine with custom prompts for unique results
  • 风格可从参考图中捕捉视觉美学
  • 非常适合保持频道风格一致性
  • 可结合自定义提示词获得独特效果

Error Handling

错误处理

Common errors:
  • 401 Unauthorized
    : Check API key
  • 402 Payment Required
    : Out of credits
  • 429 Too Many Requests
    : Rate limited, wait and retry
  • Invalid YouTube URL
    : Ensure full URL format
常见错误:
  • 401 Unauthorized
    :检查API密钥
  • 402 Payment Required
    :信用额度不足
  • 429 Too Many Requests
    :请求超限,请稍后重试
  • Invalid YouTube URL
    :确保链接格式完整

Credits

信用说明

Operations that consume credits:
  • generate_thumbnail
    : 1 credit
  • All other operations: Free
Check balance with
get_credits
before generating.
消耗信用的操作:
  • generate_thumbnail
    :1个信用点
  • 其他所有操作:免费
生成前可调用
get_credits
查询余额。