DBHub — Token-Efficient Database MCP Server

Main

Database MCP without tool sprawl

If you want agents to work with data, you usually need two safe primitives:

• Search schema (tables/columns/indexes) before writing SQL
• Execute SQL with strict limits

DBHub ships both and adds guardrails (read-only mode, row limits, query timeouts). For production, start read-only and gate write access behind explicit review or separate credentials.

README excerpt (verbatim)

[!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

FAQ

Q: Can it connect to multiple DBs? A: Yes—README mentions multi-connection support via TOML configuration.

Q: Is it safe by default? A: README describes guardrails like read-only mode, row limiting, and query timeouts—still review before production use.

Q: How do I try it quickly? A: Use the README demo mode: run with --demo and then connect an MCP client to the server.