Teaching a 1999 VB6 app to talk to AI agents (www.sql-server-tool.com)

A significant update has been made to the SQL Server Comparison Tool (SCT), a 1999 Visual Basic 6 application, enabling it to interact with AI agents like Claude. This integration allows the AI to run database schema and data comparisons while explaining results, marking an innovative approach to modernize legacy applications without extensive rewrites. The SCT version 6.0 was designed to facilitate communication through the Model Context Protocol (MCP) using structured JSON output, maintaining the functionality of the original engine while adding a new interface for AI interaction. Key technical enhancements include the introduction of a headless mode to eliminate user interface dependencies, allowing the program to run without user input, and structured output in JSON format that unambiguously separates data from presentation. This design ensures that AI agents receive clear, actionable information while preventing unauthorized actions by restricting the AI’s capabilities. This project serves as a valuable case study for developers looking to bridge the gap between legacy systems and contemporary AI technologies, demonstrating that incremental updates and external interfaces can effectively modernize older software without compromising their core functionalities.