What is MCP Toolbox used for?

MCP Toolbox is an open-source MCP server from Google that connects AI agents, IDEs and apps to databases, with prebuilt tools and a framework for building custom secure tools. It is a good fit for letting coding agents explore database schemas, building governed database tools for AI agents and natural-language access to enterprise data.

Is MCP Toolbox open source?

Yes. MCP Toolbox is open source under the Apache-2.0 licence. Its source code is on GitHub at googleapis/mcp-toolbox and is written mainly in Go.

Yes. MCP Toolbox is open source, so the software itself is free to use.

Can I self-host MCP Toolbox?

Yes. MCP Toolbox can be self-hosted on your own server or infrastructure; there is no official hosted version.

What is MCP Toolbox an alternative to?

MCP Toolbox is an open-source alternative to Connect.

Is MCP Toolbox actively maintained?

Yes. The most recent commit to MCP Toolbox was on 1 October 2026, and the latest release is v1.13.1, published on 25 September 2026. The project has 17k stars on GitHub.

MCP Toolbox: open-source alternative to Connect

About MCP Toolbox

MCP Toolbox for Databases is a Model Context Protocol server, open source, that links AI agents, IDEs and applications to your databases. It is developed in the googleapis organization, written in Go, and was renamed from genai-toolbox to mcp-toolbox, so older remotes may need updating.

The project serves two purposes. At build time it is a ready-to-use MCP server: you can connect clients such as Gemini CLI, Claude Code or Codex to databases with prebuilt generic tools, then explore schemas, talk to your data and generate code without writing boilerplate. At run time it is a framework for building specialized, secure tools for production agents, where you define structured queries, semantic search and natural-language-to-SQL capabilities. Topics list many supported databases, including BigQuery, Elasticsearch, Firestore, MongoDB, MySQL and Oracle.

The toolbox is Apache-2.0 licensed and runs on infrastructure you control, with full documentation on its website. It suits developers and platform teams that want governed, database-aware tools for AI agents instead of letting agents connect to databases ad hoc.

Key features

MCP server for databases
Prebuilt generic database tools
Framework for custom production tools
Structured queries and semantic search
Natural-language-to-SQL query support
Works with Claude Code, Codex and Gemini CLI

Good fit for

→Letting coding agents explore database schemas
→Building governed database tools for AI agents
→Natural-language access to enterprise data

Built with: Go; MongoDB; MySQL; PostgreSQL; ClickHouse; Redis
Tags: mcp; database; ai-agents; llm; golang; nl2sql; tools; google; server

MCP Toolbox: questions and answers

What is MCP Toolbox used for?: MCP Toolbox is an open-source MCP server from Google that connects AI agents, IDEs and apps to databases, with prebuilt tools and a framework for building custom secure tools. It is a good fit for letting coding agents explore database schemas, building governed database tools for AI agents and natural-language access to enterprise data.
Is MCP Toolbox open source?: Yes. MCP Toolbox is open source under the Apache-2.0 licence. Its source code is on GitHub at googleapis/mcp-toolbox and is written mainly in Go.
Is MCP Toolbox free?: Yes. MCP Toolbox is open source, so the software itself is free to use.
Can I self-host MCP Toolbox?: Yes. MCP Toolbox can be self-hosted on your own server or infrastructure; there is no official hosted version.
What is MCP Toolbox an alternative to?: MCP Toolbox is an open-source alternative to Connect.
Is MCP Toolbox actively maintained?: Yes. The most recent commit to MCP Toolbox was on 1 October 2026, and the latest release is v1.13.1, published on 25 September 2026. The project has 17k stars on GitHub.