Snowflake MCP server

This MCP server provides a way to query Snowflake databases, using external browser authentication to maintain security without storing credentials on disk. Note that the server does not restrict write operations, so you should carefully configure permissions on your Snowflake account to prevent unintended modifications.

Installation

The Snowflake MCP server is written in Go and can be installed directly using Go's package management system.

Prerequisites

• Go programming language (1.18 or later)
• Access to a Snowflake account
• Web browser for authentication

Installing with Go

go install github.com/oxplot/snowflake-mcp@latest

Usage

Basic Configuration

To start the MCP server, you need to provide your Snowflake account information and optionally specify a role:

snowflake-mcp -account=PPXXXXX-XXXXXXX -role=reporter

Replace PPXXXXX-XXXXXXX with your actual Snowflake account identifier and reporter with the role you wish to use.

Integration with Claude Code CLI

You can easily add the Snowflake MCP to Claude Code CLI using the following command:

claude mcp add-json snowflake '{
  "command": "go",
  "args": [
    "run",
    "github.com/oxplot/snowflake-mcp@latest",
    "-account=PPXXXXX-XXXXXXX",
    "-role=reporter"
  ]
}'

Authentication Flow

When you run the MCP server:

1. It will prompt you to authenticate through your web browser
2. A browser window will open with the Snowflake login page
3. After successful authentication, the MCP server will establish a connection
4. The server will then be ready to accept and process queries

Security Considerations

Important: The MCP server doesn't restrict write operations by default. To protect your data:

• Use a role with limited permissions (read-only if possible)
• Consider creating a dedicated role specifically for MCP usage
• Regularly review query logs to monitor activity
• Never use this in production environments without proper security measures

How to add this MCP server to Cursor

There are two ways to add an MCP server to Cursor. The most common way is to add the server globally in the ~/.cursor/mcp.json file so that it is available in all of your projects.

If you only need the server in a single project, you can add it to the project instead by creating or adding it to the .cursor/mcp.json file.

Adding an MCP server to Cursor globally

To add a global MCP server go to Cursor Settings > MCP and click "Add new global MCP server".

When you click that button the ~/.cursor/mcp.json file will be opened and you can add your server like this:

{
    "mcpServers": {
        "cursor-rules-mcp": {
            "command": "npx",
            "args": [
                "-y",
                "cursor-rules-mcp"
            ]
        }
    }
}

Adding an MCP server to a project

To add an MCP server to a project you can create a new .cursor/mcp.json file or add it to the existing one. This will look exactly the same as the global MCP server example above.

How to use the MCP server

Once the server is installed, you might need to head back to Settings > MCP and click the refresh button.

The Cursor agent will then be able to see the available tools the added MCP server has available and will call them when it needs to.

You can also explictly ask the agent to use the tool by mentioning the tool name and describing what the function does.