A lightweight MCP (Model Context Protocol) server for ODBC built with FastAPI, pyodbc, and SQLAlchemy. This server is compatible with Virtuoso DBMS and other DBMS backends that implement a SQLAlchemy provider.

• Get Schemas: Fetch and list all schema names from the connected database.
• Get Tables: Retrieve table information for specific schemas or all schemas.
• Describe Table: Generate a detailed description of table structures, including:
  • Column names and data types
  • Nullable attributes
  • Primary and foreign keys
• Search Tables: Filter and retrieve tables based on name substrings.
• Execute Stored Procedures: In the case of Virtuoso, execute stored procedures and retrieve results.
• Execute Queries:
  • JSONL result format: Optimized for structured responses.
  • Markdown table format: Ideal for reporting and visualization.

1. Install uv:

   pip install uv

   Or use Homebrew:

   brew install uv

2. ODBC DSN Setup: Configure your ODBC Data Source Name (~/.odbc.ini) for the target database. Example for Virtuoso DBMS:

   [VOS] Description = OpenLink Virtuoso Driver = /path/to/virtodbcu_r.so Database = Demo Address = localhost:1111 WideAsUTF16 = Yes 

3. SQLAlchemy URL Binding: Use the format:

   virtuoso+pyodbc://user:password@VOS 

Clone this repository:

git clone https://github.com/OpenLinkSoftware/mcp-sqlalchemy-server.git

For Claude Desktop users: Add the following to claude_desktop_config.json:

{ "mcpServers": { "my_database": { "command": "uv", "args": ["--directory", "/path/to/mcp-sqlalchemy-server", "run", "mcp-sqlalchemy-server"], "env": { "DB_URL": "virtuoso+pyodbc://user:password@VOS" } } } }

For easier debugging:

1. Install the MCP Inspector:

   npm install -g @modelcontextprotocol/inspector

2. Start the inspector:

   npx @modelcontextprotocol/inspector uv --directory /path/to/mcp-sqlalchemy-server run mcp-sqlalchemy-server

Access the provided URL to troubleshoot server interactions.