MCP Server for Snowflake

@dynamike

Repository

Basic information

About MCP Server for Snowflake

MCP Server for connecting to Snowflake with read-only questions

#snowflake #modelcontextprotocol

MCP Server for Snowflake config

No standard config provided

This server doesn't expose a parseable MCP config block in its README. See the repository for install instructions.

Repository

MCP Server for Snowflake tools

List all accessible Snowflake databases

List all views in a specified database and schema

Get detailed information about a specific view including columns and SQL definition

Query data from a view with an optional row limit

Execute custom read-only SQL queries (SELECT, SHOW, DESCRIBE, EXPLAIN, WITH) with results formatted as markdown tables

Overview

What is MCP Server for Snowflake?

MCP Server for Snowflake is a Model Context Protocol server that enables Claude to perform read-only queries against Snowflake databases. It uses either service account private key or external browser authentication and supports multiple SQL statement types (SELECT, SHOW, DESCRIBE, EXPLAIN, WITH) with automatic result formatting.

How to use MCP Server for Snowflake?

Install the package with uv pip install -e . after cloning, configure a .env file with Snowflake credentials and chosen authentication type, then run uv run snowflake-mcp or uv run snowflake-mcp-stdio. For Claude Desktop, add a custom MCP server pointing to the uv command with the appropriate arguments.

Key features of MCP Server for Snowflake

Read-only operations with security checks to prevent data modification
Flexible authentication (private key or external browser)
Connection pooling with automatic background refresh
Support for querying multiple views and databases in a single session
MCP-compatible handlers for querying Snowflake data
Stdio-based MCP server for easy integration with Claude Desktop

Use cases of MCP Server for Snowflake

List all accessible databases in a Snowflake account
Describe the structure and SQL definition of specific views
Query sample data from a view with an optional row limit
Execute custom read-only SQL queries and get results as markdown tables
Compare data from views in different databases within one session

Frequently asked questions

What authentication methods are supported?

Two methods: private key authentication (service account with private key file) and external browser authentication (opens a browser window for interactive login).

Is MCP Server for Snowflake safe for production use?

Yes. The server enforces read-only operations, automatically adds LIMIT clauses to prevent large result sets, validates inputs to prevent SQL injection, and requires explicit authentication — the `.env` file should never be committed to version control.

How do I configure the connection pool refresh interval?

Set the environment variable `SNOWFLAKE_CONN_REFRESH_HOURS` to the desired number of hours. The default is 8 hours.

What SQL statements are allowed?

Only SELECT, SHOW, DESCRIBE, EXPLAIN, and WITH statements are permitted; all data modification queries are rejected.

What Python version does MCP Server for Snowflake require?

Python 3.12 or higher.

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