DBHub

hybrid server

The server is able to function both locally and remotely, depending on the configuration or use case.

Integrations

  • Provides Docker container deployment options for running the DBHub server with configurable database connections and transport options.

  • Supports connecting to DuckDB databases to explore tables, access schema information, and perform read-only SQL queries with safety measures.

  • Provides access to MySQL databases for browsing tables, viewing schema information, and executing read-only SQL queries with safety protections.

DBHub is a universal database gateway implementing the Model Context Protocol (MCP) server interface. This gateway allows MCP-compatible clients to connect to and explore different databases.

+------------------+ +--------------+ +------------------+ | | | | | | | | | | | | | Claude Desktop +--->+ +--->+ PostgreSQL | | | | | | | | Cursor +--->+ DBHub +--->+ MySQL | | | | | | | | Other MCP +--->+ +--->+ SQLite | | Clients | | | | | | | | +--->+ DuckDB | | | | | | | | | | +--->+ Other Databases | | | | | | | +------------------+ +--------------+ +------------------+ MCP Clients MCP Server Databases

Features

  • Browse available tables in the database
  • View schema information for tables
  • Run read-only SQL queries against the database
  • Safety checks to prevent dangerous queries

Installation

Docker

docker run --rm --init \ --name dbhub \ --publish 8080:8080 \ bytebase/dbhub \ --transport sse \ --port 8080 \ --dsn "postgres://user:password@localhost:5432/dbname?sslmode=disable"

NPM

npx @bytebase/dbhub --transport sse --port 8080 --dsn "postgres://user:password@localhost:5432/dbname"

Usage

Configure your database connection

Database Source Name (DSN) is required to connect to your database. You can provide this in several ways:

  • Command line argument (highest priority):
    pnpm dev --dsn "postgres://user:password@localhost:5432/dbname?sslmode=disable"
  • Environment variable (second priority):
    export DSN="postgres://user:password@localhost:5432/dbname?sslmode=disable" pnpm dev
  • Environment file (third priority):
    • For development: Create .env.local with your DSN
    • For production: Create .env with your DSN
    DSN=postgres://user:password@localhost:5432/dbname?sslmode=disable

Transport

  • stdio (default) - for direct integration with tools like Claude Desktop:
    npx @bytebase/dbhub --transport stdio --dsn "postgres://user:password@localhost:5432/dbname?sslmode=disable"
  • sse - for browser and network clients:
    npx @bytebase/dbhub --transport sse --port 5678 --dsn "postgres://user:password@localhost:5432/dbname?sslmode=disable"

Command line options

OptionDescriptionDefault
dsnDatabase connection stringRequired if not set via environment
transportTransport mode: stdio or ssestdio
portHTTP server port (only applicable when using --transport=sse)8080

Claude Desktop

Docker

// claude_desktop_config.json { "mcpServers": { "dbhub": { "command": "docker", "args": [ "run", "-i", "--rm", "bytebase/dbhub", "--transport", "stdio", "--dsn", // Use host.docker.internal as the host if connecting to the local db "postgres://user:password@host.docker.internal:5432/dbname?sslmode=disable" ] } } }

NPX

// claude_desktop_config.json { "mcpServers": { "dbhub": { "command": "npx", "args": [ "-y", "@bytebase/dbhub", "--transport", "stdio", "--dsn", "postgres://user:password@localhost:5432/dbname?sslmode=disable" ] } } }

Development

  1. Install dependencies:
    pnpm install
  2. Run in development mode:
    pnpm dev
  3. Build for production:
    pnpm build pnpm start --transport stdio --dsn "postgres://user:password@localhost:5432/dbname?sslmode=disable"

Debug with MCP Inspector

stdio

TRANSPORT=stdio DSN="postgres://user:password@localhost:5432/dbname?sslmode=disable" npx @modelcontextprotocol/inspector node /path/to/dbhub/dist/index.js

SSE

# Start DBHub with SSE transport pnpm dev --transport=sse --port=8080 # Start the MCP Inspector in another terminal npx @modelcontextprotocol/inspector

Connect to the DBHub server /sse endpoint

-
security - not tested
A
license - permissive license
-
quality - not tested

Universal database MCP server connecting to MySQL, PostgreSQL, SQLite, DuckDB and etc.

  1. Installation
    1. Docker
      1. NPM
      2. Usage
        1. Configure your database connection
          1. Transport
            1. Command line options
              1. Claude Desktop
                1. Docker
                  1. NPX
                2. Development
                  1. Debug with MCP Inspector
                    1. stdio
                      1. SSE