The CData MCP Server for SendGrid defines each connection to SendGrid 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/SendGrid Data Provider/".
• On macOS, configuration files are stored in "~/Library/Application Support/CData/SendGrid 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.

You must use an API key to authenticate through the SendGrid server.

Obtaining an API Key

To obtain an API key, follow the steps below:

1. Log into SendGrid.
2. Click Settings.
3. Click API keys.
4. Click Create API Key.
5. Choose the Permissions the API Key should have, either Full Access or Restricted Access. The API key is then displayed.

NOTE: If you want access to Email events, you must purchase the Email Activity History add-in of SendGrid. If using a Restricted Access key, you must give it the messages.read and email_activity.read scopes.