DBHub MCP Server

Content

DBHub is a token-efficient database MCP server from Bytebase. It connects MCP clients to PostgreSQL, MySQL, MariaDB, SQL Server, and SQLite databases through a small tool surface focused on SQL execution, schema/object search, and custom reusable SQL tools.

The upstream README documents NPM, Docker, demo, and multi-database configuration options. The scoped NPM package exposes the dbhub binary for MCP clients.

Source Review

• https://github.com/bytebase/dbhub
• https://github.com/bytebase/dbhub/blob/main/README.md
• https://github.com/bytebase/dbhub/blob/main/package.json
• https://registry.npmjs.org/%40bytebase%2Fdbhub
• https://dbhub.ai/installation

These sources were reviewed on 2026-06-05. Prefer the live repository, installation docs, and NPM registry metadata for current package version, command options, supported databases, guardrails, and setup guidance.

Features

• Connect to PostgreSQL, MySQL, MariaDB, SQL Server, and SQLite.
• Execute SQL with transaction support and safety controls.
• Search database schemas, tables, columns, indexes, and procedures.
• Define reusable parameterized SQL operations as custom tools.
• Connect to multiple databases with TOML configuration.
• Use guardrails such as read-only mode, row limits, and query timeouts.
• Support SSH tunneling and SSL/TLS encryption.
• Use the built-in workbench interface for database tools and request traces.

Installation

For MCP clients that launch stdio servers:

{
  "mcpServers": {
    "dbhub": {
      "command": "npx",
      "args": [
        "@bytebase/dbhub@latest",
        "--transport",
        "stdio",
        "--dsn",
        "YOUR_DATABASE_DSN"
      ]
    }
  }
}

Replace YOUR_DATABASE_DSN with an approved database connection string and restart the MCP client after adding the server.

Use Cases

• Ask Claude to inspect schema structure before writing a query.
• Search tables, columns, indexes, and procedures in a development database.
• Run approved read-only SQL queries for analytics or debugging.
• Define reusable custom SQL tools for repeated safe database operations.
• Connect several development or staging databases from one MCP server.
• Use the workbench to inspect tool requests and query traces.

Safety and Privacy

Database access is high impact. Use least-privilege credentials, prefer read-only mode, configure row limits and query timeouts, and require human approval before running writes, migrations, deletes, broad updates, or queries against production data.

Connection strings, schemas, table names, row data, query results, traces, and errors can expose sensitive information. Do not connect databases containing regulated, customer, payment, healthcare, credential, or production data unless that access is approved for the MCP client and model session.

Duplicate Check

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