QueryWeaver is an open - source Text2SQL tool that converts natural language questions into SQL queries through graph - driven schema understanding, supporting REST API and MCP protocol.

An MCP server that provides access to the WolframAlpha LLM API, supporting natural language queries for questions in multiple fields such as math and science

SQLGenius is an AI - based SQL assistant that converts user questions into SQL queries through natural language processing technology, supports BigQuery database operations, and provides interactive data visualization and schema exploration functions.

An MCP server that connects to the Google Calendar API and handles schedule and event - related questions through natural language queries.

An MCP server based on Node.js that converts natural language questions into SQL queries through AI, supports multiple databases, and provides intelligent analysis and secure query execution.

The CData eBay Analytics MCP server project exposes eBay Analytics data in a read-only manner to LLMs (such as Claude Desktop) for querying through the JDBC driver, supporting natural language questions without SQL.