GPT-Image MCP Server

GPT-Image MCP Server

Enables generating images from text or transforming existing images using GPT-Image-compatible APIs, with support for OpenAI and Agnes AI backends.

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GPT-Image MCP Server

License: MIT Python 3.10+ MCP Compatible

一个用于调用 GPT-Image 兼容 API 生成图片的 MCP 服务器,支持文生图和图生图功能。

兼容 Agnes AIOpenAI GPT-Image 等标准接口。

✨ 功能特性

  • 🎨 文生图:根据文本描述生成图片
  • 🖼️ 图生图:基于参考图片和描述生成新图片
  • ⚙️ 灵活配置:支持环境变量和配置文件,环境变量优先
  • 🔌 标准协议:基于 MCP 协议,可集成到各种 AI 工具
  • 📁 自动创建目录:保存图片时自动创建不存在的目录
  • 🌐 多后端兼容:支持 Agnes AI、OpenAI 及其他兼容接口

📦 安装

方式一:使用 uvx 直接运行(推荐)

无需安装,直接运行:

uvx --from git+https://github.com/IronManCantFix/image-mcp.git image-mcp

方式二:使用 pip 安装

pip install git+https://github.com/IronManCantFix/image-mcp.git

安装后可直接使用 image-mcp 命令。

方式三:从源码安装

git clone https://github.com/IronManCantFix/image-mcp.git
cd image-mcp
pip install .

⚙️ 配置

Agnes AI(推荐)

export IMAGE_API_URL="https://apihub.agnes-ai.com/v1/images/generations"
export IMAGE_API_KEY="your-agnes-api-key"
export IMAGE_MODEL="agnes-image-2.0-flash"

OpenAI

export IMAGE_API_URL="https://api.openai.com/v1/images/generations"
export IMAGE_API_KEY="sk-your-openai-api-key"
export IMAGE_MODEL="gpt-image-2"

配置文件

也可以使用配置文件(默认路径 ~/.config/image-mcp/config.json):

{
  "api_url": "https://api.openai.com/v1/images/generations",
  "api_key": "sk-your-api-key",
  "model": "gpt-image-2"
}

💡 提示:配置文件路径可通过 IMAGE_CONFIG_PATH 环境变量覆盖。

代理配置

如需通过 HTTP 代理访问 API,可设置 IMAGE_PROXY 环境变量或在配置文件中添加 proxy 字段:

export IMAGE_PROXY="http://127.0.0.1:7890"

配置文件方式:

{
  "api_url": "https://api.openai.com/v1/images/generations",
  "api_key": "sk-your-api-key",
  "model": "gpt-image-2",
  "proxy": "http://127.0.0.1:7890"
}

未配置时默认不使用代理,同时也会尊重系统环境变量 HTTP_PROXY / HTTPS_PROXY

配置优先级

环境变量 > 配置文件 > 默认值

🚀 使用方法

启动 MCP 服务器

# 使用 uvx
uvx --from git+https://github.com/IronManCantFix/image-mcp.git image-mcp

# 使用 pip 安装后
image-mcp

# 从源码运行
python server.py

集成到 Cursor

在项目根目录创建 .cursor/mcp.json 文件:

{
  "mcpServers": {
    "image-mcp": {
      "command": "uvx",
      "args": ["--from", "git+https://github.com/IronManCantFix/image-mcp.git", "image-mcp"],
      "env": {
        "IMAGE_API_URL": "https://apihub.agnes-ai.com/v1/images/generations",
        "IMAGE_API_KEY": "your-agnes-api-key",
        "IMAGE_MODEL": "agnes-image-2.0-flash"
      }
    }
  }
}

或者使用 pip 安装后:

{
  "mcpServers": {
    "image-mcp": {
      "command": "image-mcp",
      "env": {
        "IMAGE_API_URL": "https://apihub.agnes-ai.com/v1/images/generations",
        "IMAGE_API_KEY": "your-agnes-api-key",
        "IMAGE_MODEL": "agnes-image-2.0-flash"
      }
    }
  }
}

集成到 Claude Desktop

在 Claude Desktop 配置文件中添加:

{
  "mcpServers": {
    "image-mcp": {
      "command": "uvx",
      "args": ["--from", "git+https://github.com/IronManCantFix/image-mcp.git", "image-mcp"],
      "env": {
        "IMAGE_API_URL": "https://apihub.agnes-ai.com/v1/images/generations",
        "IMAGE_API_KEY": "your-agnes-api-key",
        "IMAGE_MODEL": "agnes-image-2.0-flash"
      }
    }
  }
}

🛠️ 工具说明

text_to_image

根据文本描述生成图片。

参数 类型 必填 说明
prompt string 图片描述文本
save_path string 保存的本地文件路径
size string 图片尺寸,如 1024x1024,默认 1024x1024
quality string 图片质量:low / medium / high,默认 medium

示例:

{
  "prompt": "a cute cat sitting on a windowsill",
  "save_path": "/Users/me/images/cat.png",
  "size": "1024x1024",
  "quality": "high"
}

image_to_image

基于参考图片和文本描述生成新图片。

参数 类型 必填 说明
prompt string 变换描述文本
input_image string 输入图片的本地文件路径
save_path string 保存的本地文件路径
size string 输出图片尺寸
quality string 图片质量

示例:

{
  "prompt": "make it in anime style",
  "input_image": "/Users/me/images/original.png",
  "save_path": "/Users/me/images/anime_version.png",
  "size": "1024x1024",
  "quality": "high"
}

📤 返回格式

所有工具返回统一的 JSON 格式:

成功

{
  "success": true,
  "file_path": "/absolute/path/to/image.png",
  "message": "图片已保存"
}

失败

{
  "success": false,
  "error": "错误描述"
}

❓ 常见问题

Q: 如何获取 Agnes AI API Key?

A: 前往 Agnes AI API Hub 注册并获取 API Key。

Q: 如何获取 OpenAI API Key?

A: 前往 OpenAI Platform 创建 API Key。

Q: 支持哪些图片格式?

A: 输出格式为 PNG。图生图输入支持 PNG、JPG、JPEG、GIF、WebP 格式。

Q: 可以使用其他兼容的 API 吗?

A: 可以,只需将 IMAGE_API_URL 设置为对应的 API 端点地址,IMAGE_MODEL 设置为对应的模型名称即可。接口需兼容 OpenAI GPT-Image 的请求/响应格式。

Q: 图片保存在哪里?

A: 由调用时的 save_path 参数决定,可以是任意路径。如果目录不存在会自动创建。

📄 许可证

MIT License - 详见 LICENSE 文件

🔗 相关链接

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