Overview
DBHub is a zero-dependency, token-efficient MCP server implementing the Model Context Protocol interface. This lightweight gateway allows MCP-compatible clients to connect to and explore different databases through a single interface with just two tools, maximizing the available context window for AI operations.
Supported Databases
- PostgreSQL: Full support for PostgreSQL databases
- MySQL: MySQL server integration
- MariaDB: MariaDB compatibility
- SQL Server: Microsoft SQL Server support
- SQLite: Embedded database access
Features
- Maximum Efficiency: Just 2 MCP tools for all database operations
- Token Optimization: Minimal token usage preserves context window
- Unified Interface: Same tools work across all database types
- Zero Dependencies: Lightweight with no external dependencies
Multi-Database Support
- Connect to multiple database types simultaneously
- Switch between databases seamlessly
- Consistent query interface regardless of backend
- Automatic schema discovery
Database Operations
- Execute SELECT queries
- Explore database schemas
- View table structures and relationships
- Inspect column types and constraints
Use Cases
Local Development
- Query development databases quickly
- Explore database schemas conversationally
- Test SQL queries with AI assistance
- Debug database issues
Multi-Database Projects
- Manage projects using different databases
- Compare data across database types
- Migrate between database platforms
- Learn different SQL dialects
Data Exploration
- Discover what data exists in databases
- Understand table relationships
- Query data without writing SQL
- Generate insights from database content
Schema Analysis
- Document database structures
- Find tables and columns
- Understand foreign key relationships
- Analyze database design
Token Efficiency
DBHub's two-tool design is specifically optimized to:
- Minimize tool definition tokens
- Preserve context window for data
- Reduce API costs
- Improve response quality
This is crucial for AI applications where context window is limited and expensive.
Security
- Local deployment only (no cloud connections)
- Direct database connections
- No data transmission to third parties
- Standard database authentication
Integration
Works with AI assistants supporting MCP like Claude and Cursor. Requires database connection strings for the databases you want to access. Runs locally on your machine.
Pricing
Free and open-source. Works with your existing database installations.
