dbhub

[!NOTE]
Brought to you by Bytebase, open-source database DevSecOps platform.

            +------------------+    +--------------+    +------------------+
            |                  |    |              |    |                  |
            |                  |    |              |    |                  |
            |  Claude Desktop  +--->+              +--->+    PostgreSQL    |
            |                  |    |              |    |                  |
            |  Claude Code     +--->+              +--->+    SQL Server    |
            |                  |    |              |    |                  |
            |  Cursor          +--->+    DBHub     +--->+    SQLite        |
            |                  |    |              |    |                  |
            |  VS Code         +--->+              +--->+    MySQL         |
            |                  |    |              |    |                  |
            |  Copilot CLI     +--->+              +--->+    MariaDB       |
            |                  |    |              |    |                  |
            |                  |    |              |    |                  |
            +------------------+    +--------------+    +------------------+
                 MCP Clients           MCP Server             Databases

DBHub is a zero-dependency, token efficient MCP server implementing the Model Context Protocol (MCP) server interface. This lightweight gateway allows MCP-compatible clients to connect to and explore different databases:

• Local Development First: Zero dependency, token efficient with just two MCP tools to maximize context window
• Multi-Database: PostgreSQL, MySQL, MariaDB, SQL Server, and SQLite through a single interface
• Multi-Connection: Connect to multiple databases simultaneously with TOML configuration
• Guardrails: Read-only mode, row limiting, and query timeout to prevent runaway operations
• Secure Access: SSH tunneling and SSL/TLS encryption

Supported Databases

PostgreSQL, MySQL, SQL Server, MariaDB, and SQLite.

MCP Tools

DBHub implements MCP tools for database operations:

• execute_sql: Execute SQL queries with transaction support and safety controls
• search_objects: Search and explore database schemas, tables, columns, indexes, and procedures with progressive disclosure
• Custom Tools: Define reusable, parameterized SQL operations in your dbhub.toml configuration file

Workbench

DBHub includes a built-in web interface for interacting with your database tools. It provides a visual way to execute queries, run custom tools, and view request traces without requiring an MCP client.

Installation

See the full Installation Guide for detailed instructions.

Quick Start

Docker:

docker run --rm --init \
   --name dbhub \
   --publish 8080:8080 \
   bytebase/dbhub \
   --transport http \
   --port 8080 \
   --dsn "[REDACTED:DB Connection String]

NPM: (requires Node.js >= 22.5.0)

npx @bytebase/dbhub@latest --transport http --port 8080 --dsn "[REDACTED:DB Connection String]

MCP Bundle (one-click install):

Download dbhub-<version>.mcpb from the latest release and install it in any MCPB-compatible client — Claude Desktop (double-click, or drag into Settings → Extensions), Claude Code, or MCP for Windows — then enter your database connection string. The bundle runs locally over stdio, is read-only by design (writes are rejected and the database session is set to read-only at the engine level), and needs no remote endpoint or OAuth setup — ideal for giving non-technical teammates curated, read-only database access. Pair it with a least-privilege, read-only database account. See the MCP Bundle guide for details and for packaging your own bundle.

Claude Code Plugin: