MCP Toolbox
ActiveDescription
MCP Toolbox is an open-source MCP server for databases by Google, enabling agent access to PostgreSQL, MySQL, BigQuery, Spanner, and more.
Key Features
- Prebuilt generic tools for instant database access — list tables, execute SQL, explore schemas
- Custom tools framework for building structured queries, semantic search, and NL2SQL capabilities
- Multi-database support: PostgreSQL, MySQL, BigQuery, Spanner, MongoDB, Redis, Neo4j, and 15+ more
- Multi-language SDKs: Python, JavaScript/TypeScript, Go, and Java with sub-10-line integration
- Built-in connection pooling, IAM authentication, and OpenTelemetry observability
- Works with any MCP client: Gemini CLI, Claude Code, Codex, Google Antigravity, and more
Use Cases
💡 Connecting AI coding assistants in IDEs to enterprise databases for schema exploration and query generation
💡 Building production AI agents that safely query multiple database backends with predefined logic
💡 Enabling natural language to SQL translation for non-technical users via MCP-compatible tools
💡 Centralizing database access for teams with unified authentication, connection pooling, and audit trails
💡 Rapidly prototyping database-connected AI applications with minimal boilerplate code
Strengths & Limitations
✅ Strengths
- • Actively maintained, recent updates
- • High community interest (16.2k stars)
- • Permissive open-source license (Apache-2.0)
- • Established track record (2 years in production)
Categories
Quick Start
Add the MCP config to your client: `{"mcpServers": {"toolbox-postgres": {"command": "npx", "args": ["-y", "@toolbox-sdk/server", "--prebuilt=postgres", "--stdio"]}}}`. Set environment variables for database connection. For custom tools, define a `tools.yaml` with sources and tool logic.