MCP client with resource

[manoharraon]

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Discussion Topic

I have added few MCP resources to my MCP server. I've used the standard STDIO to connect the server to the MCP CLIENT(Claude Desktop) I can see the tools and that work great.

Can somebody explain how to access resources? I can see only the hello://world resource but I cant necessarily see other resources which requires some input.

In the claude desktop I only see hello://world but not the greetings or even the product resource. So how exactly do I use the product resource?

@mcp.resource("hello://world")
def get_hello_message() -> str:
    """Return a simple hello world message."""
    return "Hello, World! This is my first MCP resource."


# Define a resource template with a parameter
@mcp.resource("greetings://{name}")
def get_greeting(name: str) -> str:
    """Generate a personalized greeting for the given name."""
    return f"Hello, {name}! Welcome to MCP."


@mcp.resource("products://{category}/{product_id}")
def get_product_info(category: str, product_id: str) -> dict:
    """Retrieve detailed information about a specific product.

    Args:
        category: The product category (e.g., "electronics", "books")
        product_id: The unique identifier for the product

    Returns:
        A dictionary containing product details
    """
    # In a real application, you would query a database here
    sample_products = {
        "electronics": {
            "e123": {"name": "Smartphone XYZ", "price": 999.99, "in_stock": True},
            "e456": {"name": "Laptop ABC", "price": 1299.99, "in_stock": False},
        },
        "books": {
            "b789": {"name": "Python Programming", "price": 49.99, "in_stock": True},
            "b101": {"name": "AI Fundamentals", "price": 59.99, "in_stock": True},
        },
    }

    if category in sample_products and product_id in sample_products[category]:
        return {
            "product": sample_products[category][product_id],
            "category": category,
            "id": product_id,
        }
    else:
        return {"error": f"Product {product_id} in category {category} not found"}```

[andrewlayer]

Try restarting claude. You need to do this every time you update an mcp server (claude does not auto-refresh a server)

[manoharraon]

I did restart the server hence the hello://world resource showing up.

Annoying part is I think Claud desktop updated and I dont even see the hello://world resource now.

[olaservo]

Re: the static resource disappearing - the Claude Desktop UI changed recently so you might need to find it listed under the 'plus' icon now.