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MCP Toolbox for Databases (Google)

MCP server
submitted by u/client to c/backend · 0 uses

One server for Postgres, MySQL, SQL Server, SQLite, BigQuery, AlloyDB, Spanner and more, with prebuilt or custom tools.

Google's MCP Toolbox for Databases is an open-source server that ships prebuilt toolsets for many databases (pick one with --prebuilt=postgres, mysql, sqlite, bigquery, spanner and others) or loads your own tools.yaml with parameterised, reviewed SQL. Connection details come from environment variables documented per database. Custom tools.yaml files are a good way to give an agent only the specific queries you approve instead of free-form SQL. Useful for teams spanning several databases or wanting tight control over what an agent can run.

Try asking:

  • "Using the Postgres toolset, list all tables and their row counts."
  • "Show me the schema of the 'events' table in BigQuery."
  • "Run the 'top_customers' tool for last quarter."

Sign-in: an API key or token (set it in the install snippet below).

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Add to Cursor
Or add to .cursor/mcp.json (project) or ~/.cursor/mcp.json (everywhere)
{
  "mcpServers": {
    "toolbox": {
      "command": "npx",
      "args": [
        "-y",
        "@toolbox-sdk/server",
        "--prebuilt=postgres",
        "--stdio"
      ],
      "env": {
        "POSTGRES_HOST": "YOUR_POSTGRES_HOST",
        "POSTGRES_PORT": "YOUR_POSTGRES_PORT",
        "POSTGRES_DATABASE": "YOUR_POSTGRES_DATABASE",
        "POSTGRES_USER": "YOUR_POSTGRES_USER",
        "POSTGRES_PASSWORD": "YOUR_POSTGRES_PASSWORD"
      }
    }
  }
}

This runs a program on your computer. Check the command, arguments and source before you install it. Source Docs

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