The CData Code Assist MCP for Informix defines each connection to Informix as a named configuration that an MCP Client (such as Claude Desktop) can use when sending natural language queries.

You create and manage these configurations using the CData Code Assist MCP Configuration Tool. The tool automatically handles formatting, storage, and registration with MCP clients.

Understanding Connection Configurations

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

• On Windows, configuration files are stored in "~/AppData/Roaming/CData/Informix Data Provider/".
• On macOS, configuration files are stored in "~/Library/Application Support/CData/Informix 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 an MCP client to launch a dedicated MCP server instance with the correct connector and options. Manual file editing is not required.

Connecting to Informix

• AuthScheme: Specifies the type of user authentication to be performed at the server. There are two options:
  • USRIDPWD (default): Provides authentication via unencrypted user credentials (User and Password).
  • EUSRIDPWD: Provides authentication via encrypted user credentials.
• Host: The IP address of the server running Informix.
• Server: The name of the server running Informix.
• Port: The port the Informix server is listening on.
• Database: The name of the Informix database.
• User: The authenticating user.
• Password: The authenticating user's password.