Alchemy SDK MCP server

This MCP plugin for Alchemy SDK provides integration with Alchemy's blockchain services, allowing you to perform operations like retrieving NFT data and querying blockchain information through a simple server interface.

Installation

Using Smithery (Recommended)

Install the alchemy-sdk-mcp plugin for Claude Desktop automatically via Smithery:

npx -y @smithery/cli install @itsanishjain/alchemy-sdk-mcp --client claude

Manual Installation

If you prefer to install manually, follow these steps:

1. Install dependencies:

   npm install
   

2. Build the project:

   npm run build
   

3. Configure your Alchemy API key:

   • Obtain an API key from Alchemy
   • Add your API key to the settings.json file

4. Start the server:

   npm start
   

   Alternatively, you can set the API key directly in your environment and start the server:

   $env:ALCHEMY_API_KEY="your_api_key_here"; node dist/index.js
   

Using the MCP Server

Once running, the server provides the following endpoints:

Get NFTs for a Wallet Address

Retrieve all NFTs owned by a specific wallet address:

POST /getNftsForOwner
{
    "owner": "wallet_address"
}

Get NFT Metadata

Retrieve detailed metadata for a specific NFT:

POST /getNftMetadata
{
    "contractAddress": "contract_address",
    "tokenId": "token_id"
}

Get Latest Block Number

Retrieve the latest block number from the blockchain:

POST /getBlockNumber

Error Handling

The server includes robust error handling. If something goes wrong, you'll receive an error response in this format:

{
    "error": "Error message"
}

All errors are also logged to the console with appropriate prefixes to help with debugging:

• [Setup] for initialization issues
• [API] for API call problems
• [Error] for general error handling

How to add this MCP server to Cursor

There are two ways to add an MCP server to Cursor. The most common way is to add the server globally in the ~/.cursor/mcp.json file so that it is available in all of your projects.

If you only need the server in a single project, you can add it to the project instead by creating or adding it to the .cursor/mcp.json file.

Adding an MCP server to Cursor globally

To add a global MCP server go to Cursor Settings > MCP and click "Add new global MCP server".

When you click that button the ~/.cursor/mcp.json file will be opened and you can add your server like this:

{
    "mcpServers": {
        "cursor-rules-mcp": {
            "command": "npx",
            "args": [
                "-y",
                "cursor-rules-mcp"
            ]
        }
    }
}

Adding an MCP server to a project

To add an MCP server to a project you can create a new .cursor/mcp.json file or add it to the existing one. This will look exactly the same as the global MCP server example above.

How to use the MCP server

Once the server is installed, you might need to head back to Settings > MCP and click the refresh button.

The Cursor agent will then be able to see the available tools the added MCP server has available and will call them when it needs to.

You can also explictly ask the agent to use the tool by mentioning the tool name and describing what the function does.