The CData MCP Server for Authorize.net defines each connection to Authorize.net as a named configuration that Claude can use when sending natural language queries.

You create and manage these configurations using the MCP Configuration Tool. The tool automatically handles formatting, storage, and registration with Claude Desktop.

Understanding Connection Configurations

Each connection configuration is stored in a .mcp file. This file includes the details needed to initialize the connector when Claude starts a session.

• On Windows, configuration files are stored in "~/AppData/Roaming/CData/Authorize.net Data Provider/".
• On macOS, configuration files are stored in "~/Library/Application Support/CData/Authorize.net Data Provider/".

The .mcp file is a text file that contains a list of connection properties and a timestamp. For example:

#Tue May 20 15:48:40 EDT 2025
AuthScheme=Basic
User=myUser
Password=myPassword
Security Token=myToken

The configuration tool handles these settings automatically. Each saved configuration enables Claude to launch a dedicated MCP Server instance with the correct connector and options. Manual file editing is not required.

Connecting to Authorize.net

Before you connect, log into your Merchant account and navigate to Account > Settings. Your account Security Settings section displays the LoginID and TransactionKey.

Now set the following to connect:

• LoginID: The API login Id associated with your payment gateway account. (Note: This value is not the same as the login Id that you use to log in to the Merchant Interface.)
• TransactionKey: The transaction key associated with your payment gateway account.
• UseSandbox: Set to false by default, for use with a production account. If you are using a developer test account, set UseSandbox to true.