image-mcp
MCP server for image recognition, supporting multiple vision backends (Anthropic, Zhipu, Ollama) to describe, answer questions, and analyze images.
README
image-mcp · 视觉识别 MCP 服务器
一个基于 Model Context Protocol 的图片识别服务器,统一封装三大视觉 API 后端,让 Claude Desktop / Cursor / 任何 MCP 客户端都能调用图片描述、问答与多图分析能力。
✨ 支持的视觉后端
| Provider | 服务 | 适用场景 |
|---|---|---|
anthropic |
Claude (Anthropic) API | 用户提到的 "code plan API",效果最强 |
zhipu |
智谱 API (GLM-4V 等) | 国产视觉模型,国内访问稳定 |
ollama |
Ollama (本地 llava / llama3.2-vision) | 本地离线运行,零成本、隐私好 |
所有后端通过统一的 provider 参数在运行时动态切换,无需重启。
🧰 暴露的 MCP Tools
| Tool | 参数 | 说明 |
|---|---|---|
vision_describe |
path, provider? |
生成单张图片的详细文字描述/识别结果 |
vision_qa |
path, question, provider? |
针对图片提问,模型按图片内容回答 (VQA) |
vision_analyze |
paths[], prompt, provider? |
对多张图片综合分析/对比 |
provider可选;不传时按DEFAULT_PROVIDER→anthropic→zhipu→ollama优先级自动选择第一个已配置的后端。- 返回结果开头会标注实际使用的 provider,例如
[provider: zhipu]。
📦 安装
# 需要 Node.js >= 20
npm install
npm run build
⚙️ 配置
复制 .env.example 为 .env 并填入密钥:
cp .env.example .env
# Claude (Anthropic)
ANTHROPIC_API_KEY=sk-ant-xxx
ANTHROPIC_MODEL=claude-sonnet-4-5-20250929
# 智谱
ZHIPU_API_KEY=xxx.xxx
ZHIPU_MODEL=glm-4v
# Ollama (本地)
OLLAMA_BASE_URL=http://localhost:11434
OLLAMA_MODEL=llava
# 默认后端
DEFAULT_PROVIDER=anthropic
只需配置你想用的后端的密钥即可,其余可留空。Ollama 无需密钥,但要先
ollama pull llava拉取视觉模型并保持服务运行。
🔌 接入 MCP 客户端
Claude Desktop
编辑配置文件(macOS: ~/Library/Application Support/Claude/claude_desktop_config.json,Windows: %APPDATA%\Claude\claude_desktop_config.json):
{
"mcpServers": {
"image-mcp": {
"command": "node",
"args": ["D:\\ai\\image-mcp\\dist\\index.js"],
"env": {
"ANTHROPIC_API_KEY": "sk-ant-xxx",
"ZHIPU_API_KEY": "xxx.xxx",
"DEFAULT_PROVIDER": "anthropic"
}
}
}
}
也可不写
env,改为在项目目录放.env文件(dotenv 会自动加载)。
Cursor / 其他 MCP 客户端
按对应客户端文档添加一个 stdio 类型的 MCP server,命令为 node D:\ai\image-mcp\dist\index.js。
🧪 调试
用官方 Inspector 交互测试:
npm run inspector
会打开网页界面,可手动调用三个工具、查看请求/响应。
🏗️ 项目结构
src/
├── index.ts # MCP 服务器入口,注册 3 个工具
├── providers/
│ ├── index.ts # VisionProvider 接口 + getProvider 工厂
│ ├── anthropic.ts # Claude API 适配器
│ ├── zhipu.ts # 智谱 API 适配器
│ └── ollama.ts # Ollama API 适配器
└── utils/
├── image.ts # 图片读取 + base64 编码 + MIME 推断
└── config.ts # 环境变量加载 + provider 解析
架构说明
三个工具本质都调用 VisionProvider.analyze(images, prompt),区别只在 prompt:
vision_describe→ 固定描述 promptvision_qa→ 用户问题作为 promptvision_analyze→ 多图 + 自定义 prompt
新增一个视觉后端只需实现 VisionProvider 接口并在 getProvider 注册即可。
📜 脚本
| 命令 | 作用 |
|---|---|
npm run build |
TypeScript 编译到 dist/ |
npm start |
运行编译后的服务器 |
npm run inspector |
启动 MCP Inspector 调试 |
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