from praisonaiagents import VisionAgent
    
    # Simple usage
    agent = VisionAgent()
    description = agent.describe("https://example.com/image.jpg")
    print(description)
    
    # Analyze with custom prompt
    result = agent.analyze(
        "https://example.com/chart.png",
        prompt="What data does this chart show?"
    )
    
    # Compare images
    comparison = agent.compare([
        "image1.jpg",
        "image2.jpg"
    ])
    
    # Extract text
    text = agent.extract_text("document.png")