DBHub Claude Code Plugin

Claude Code plugin for DBHub — a minimal, token-efficient database MCP server for PostgreSQL, MySQL, MariaDB, SQL Server, and SQLite. Full guide: https://dbhub.ai/claude-code-plugin

What's included

• MCP server: registers dbhub (via npx @bytebase/dbhub, pinned to this plugin's version) exposing two tools: execute_sql and search_objects.
• /dbhub:setup: skill that helps you build the connection string, troubleshoot connection failures, and graduate to a multi-database TOML config when needed.
• /dbhub:explore: teaches Claude the token-efficient progressive-disclosure workflow for exploring schemas (names → summary → full).

Installation

Inside Claude Code (the repo doubles as a plugin marketplace via .claude-plugin/marketplace.json):

/plugin marketplace add bytebase/dbhub
/plugin install dbhub@dbhub

For development on the plugin itself, load it from a checkout instead: claude --plugin-dir ./plugin.

Claude Code prompts for your database connection string (DSN) on install and stores it in secure storage, e.g. postgres://user:password@localhost:5432/dbname — run /dbhub:setup for help building one. To change it later, open /plugin → dbhub → configuration.

Read-only by design

Like the MCPB bundle, this plugin ships a fixed read-only configuration (dbhub.toml): mutating statements are rejected by the SQL classifier, the database session is set read-only at the engine level, and results are capped at 1000 rows. Pair it with a least-privilege, read-only database account.

Need write access, multiple databases, SSH tunnels, or custom tools? Register DBHub directly with your own TOML config instead:

claude mcp add dbhub -- npx -y @bytebase/dbhub@latest --transport stdio --config /path/to/dbhub.toml

Requirements

• Node.js >= 22.5.0 (npx fetches the @bytebase/dbhub package on first launch)