Base64 MCP Server

Instructions

Args:
    image_path: 图片文件路径

Returns:
    Base64编码结果

Implementation Reference

• base64_server.py:69-96 (handler)

  The @mcp.tool() decorated function implementing the base64_encode_image tool. It reads the image file from the given path, encodes its binary content to base64, determines the MIME type using PIL, constructs a data URL, and returns previews of the encoded string and data URL.

  @mcp.tool()
  def base64_encode_image(image_path: str) -> str:
      """将图片转换为Base64编码
  
      Args:
          image_path: 图片文件路径
  
      Returns:
          Base64编码结果
      """
      try:
          if not os.path.exists(image_path):
              return f"错误: 文件 '{image_path}' 不存在"
  
          with open(image_path, "rb") as image_file:
              encoded = base64.b64encode(image_file.read()).decode("utf-8")
  
          # 获取MIME类型
          img = PILImage.open(image_path)
          mime_type = f"image/{img.format.lower()}"
  
          # 返回可在HTML中使用的Data URL格式
          data_url = f"data:{mime_type};base64,{encoded}"
          encoded_preview = f"图片Base64编码结果 (前100字符): {encoded[:100]}..."
          data_url_preview = f"完整Data URL (前100字符): {data_url[:100]}..."
          return f"{encoded_preview}\n\n{data_url_preview}"
      except Exception as e:
          return f"图片编码失败: {str(e)}"