# MCP Toolbox for Databases

> Let your agent explore schemas and query your databases, from Postgres and MySQL to BigQuery, AlloyDB and Spanner.

MCP Toolbox for Databases is Google's open-source MCP server for databases. Connect your agent to a database and it can explore the schema, write and run SQL, and check on the database's health, so you can talk to your data and generate database-aware code without writing boilerplate.

What you can do with it
- Ask questions about your data in plain English and let your agent run the SQL
- Explore schemas: tables, views, indexes, triggers and stored procedures
- Find long-running queries, locks and query plans
- Check database health, such as bloated tables and invalid indexes
- Generate code that matches your real schema

Databases it supports
- Google Cloud: AlloyDB, BigQuery, Cloud SQL (PostgreSQL, MySQL, SQL Server), Spanner, Firestore and Knowledge Catalog
- Others: PostgreSQL, MySQL, MariaDB, SQL Server, Oracle, MongoDB, Redis, Elasticsearch, CockroachDB, ClickHouse, Couchbase, Neo4j, Snowflake, Trino and more

How it connects
It runs on your machine. Add it to your agent with npx @toolbox-sdk/server and a --prebuilt flag for your database (for example --prebuilt=postgres), then set environment variables with your connection details. You can also run it with Docker or a binary, install it from the Google Antigravity MCP Store, or add it as a Gemini CLI extension.

Choose what it can do
Load a smaller toolset with --prebuilt=<database>/<toolset>, such as postgres/data for just the SQL tools. Teams can also define their own tools in a tools.yaml file, with predefined queries, so an agent only runs what you allow.

Good to know
The prebuilt execute_sql tool runs whatever SQL your agent writes, so connect with a database user that has only the access you want to give it.

- Type: Plugin
- Made by: Google
- Category: Databases
- Formats: Local MCP, Extensions
- Version: 1.14.0
- Website: https://mcp-toolbox.dev
- Source: https://github.com/googleapis/mcp-toolbox
- Page: https://pluginboard.ai/plugins/mcp-toolbox-for-databases

## Works with

- Claude
- GitHub Copilot
- Cursor
- Claude Code
- Codex
- Antigravity
- Gemini CLI
- OpenClaw
- OpenCode
- Hermes Agent

## Install

### Gemini CLI

Run in your terminal:

```shell
gemini extensions install https://github.com/googleapis/mcp-toolbox
```

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From Pluginboard (https://pluginboard.ai).