Free USDC Transfer (Base) MCP server

This MCP server implementation provides free USDC transfers on Base network with Coinbase CDP MPC Wallet integration. It allows you to send USDC to any address or ENS/BaseName domain without paying transaction fees, simplifying cryptocurrency transfers.

Features

• Free USDC Transfers: Send USDC to any address or ENS/BaseName domain on Base without fees
• Coinbase MPC Wallet: Create and manage your Coinbase MPC wallet for secure, feeless transactions
• Name Resolution: Automatic support for ENS and BaseName domains

Installation

Prerequisites

• Node.js environment
• Coinbase CDP account and API keys

Setting Up Your API Keys

1. Sign up for a Coinbase CDP account
2. Generate your API key from the developer dashboard
3. Keep your API key name and private key ready for configuration

Installation with npm

Install the server using npm:

npm install @magnetai/free-usdc-transfer

Configuration

Using with Claude Desktop

Add the MCP server to your claude_desktop_config.json:

{
  "mcpServers": {
    "free-usdc-transfer": {
      "command": "npx",
      "args": [
        "-y",
        "@magnetai/free-usdc-transfer"
      ],
      "env": {
        "COINBASE_CDP_API_KEY_NAME": "YOUR_COINBASE_CDP_API_KEY_NAME",
        "COINBASE_CDP_PRIVATE_KEY": "YOUR_COINBASE_CDP_PRIVATE_KEY"
      }
    }
  }
}

Make sure to replace YOUR_COINBASE_CDP_API_KEY_NAME and YOUR_COINBASE_CDP_PRIVATE_KEY with your actual Coinbase CDP credentials.

Alternative Installation with Magnet Desktop

You can also install the server using magnet-desktop.

Usage

The MCP server provides two main functions:

Transferring USDC

Use the transfer-usdc function to send USDC to any recipient:

Inputs:

• usdc_amount (number): USDC amount to transfer (must be greater than 0)
• recipient (string): Recipient's on-chain address or ENS domain (e.g., example.eth)

Example usage:

transfer-usdc(usdc_amount=5.5, recipient="0x1234567890abcdef1234567890abcdef12345678")

Or with an ENS domain:

transfer-usdc(usdc_amount=10, recipient="username.eth")

The function will:

1. Verify the recipient's address or resolve ENS domains
2. Schedule a USDC transfer on the Base chain
3. Provide a link to view the transaction details on BaseScan

Creating a Coinbase MPC Wallet

If you don't already have a wallet set up, use the create_coinbase_mpc_wallet function:

Example usage:

create_coinbase_mpc_wallet()

This function will:

1. Create a new Coinbase MPC wallet if one doesn't exist
2. Save the seed to a secure file (mpc_info.json) in your Documents directory
3. Return the wallet address for future use

If a wallet already exists, it will simply return the existing wallet address.

Important Notes

• Blockchain transactions might take some time to complete. The transfer function only schedules the transaction and won't wait for it to be finalized.
• Your MPC wallet seed is stored locally in your Documents directory as mpc_info.json - keep this file secure.

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.