DBHub

If you're tired of bloated database tools eating your context window, this is the MCP server to check out. Built by the Bytebase team, it connects Claude to PostgreSQL, MySQL, SQL Server, MariaDB, and SQLite with just two core tools: execute_sql for running queries with transaction support and search_objects for exploring schemas without dumping entire table definitions. You get read-only mode, row limits, query timeouts, and SSH tunneling out of the box. The TOML config lets you connect to multiple databases simultaneously, and there's a built-in web workbench for testing queries without spinning up an MCP client. Zero dependencies, token efficient by design, perfect for local development.