Materialize MCP Server

What is Materialize MCP Server?

Materialize MCP Server transforms your Materialize indexed views into fully-typed, callable tools via the Model Context Protocol (MCP). It lets you define stable, versioned, and secure data tools simply by creating SQL views and indexing them—no additional code required.

How to use Materialize MCP Server?

Clone the repository and run uv run materialize-mcp-server (or uv run materialize-mcp). Configure the server using command-line arguments or environment variables, such as --mz-dsn for the Materialize connection string and --transport for the communication protocol (stdio or sse).

Key features of Materialize MCP Server

• Stable: define once, used repeatedly with consistent business logic.
• Typed: input and output schemas are automatically derived from the index.
• Observable: usage is logged per tool, making cost and performance explicit.
• Secure: only callable if a view and index are created.
• No extra code: tools are defined entirely through SQL views and indexes.

Use cases of Materialize MCP Server

• Replace brittle execute_sql tools with stable, operational data products.
• Expose Materialize indexed views as callable, fully-typed tools for LLMs and agents.
• Provide secure, observable data access without giving raw SQL execution powers.
• Simplify tool creation for business logic by writing SQL views and indexing them.

FAQ from Materialize MCP Server

How does this differ from a generic execute_sql