Supabase PostgreSQL MCP server

This MCP server connects to a Supabase PostgreSQL database, exposing table schemas as resources and providing tools for data analysis. It lets you query and analyze your database data through any MCP-compatible client like Claude.app.

Installation

To set up the Supabase MCP server:

1. Clone the repository to your local machine
2. Install the required dependencies:

   npm install
   

3. Create your environment configuration file:

   cp .env.example .env
   

4. Edit the .env file with your Supabase connection details:

   SUPABASE_URL=your_supabase_url
   SUPABASE_KEY=your_supabase_key
   

Running the Server

You can run the server in two different modes depending on your needs.

Command Line Integration

To run the server using stdio (standard input/output) for command line integration:

npm start

Web Integration

To run the server with HTTP and Server-Sent Events (SSE) for web integration:

npm run start:http

Working with MCP Clients

This server works with any MCP-compatible client, including Claude.app and the MCP Inspector.

Available Resources

The server provides access to your database schema through these resources:

• schema://tables - Get a list of all tables in your database
• schema://table/{tableName} - View the schema for a specific table

Using the Tools

The server offers several tools for interacting with your data:

• query - Execute read-only SQL queries against your database

• analyze-table - Get basic statistics about a specific table

• find-related-tables - Discover tables that are related to a given table

Guided Exploration with Prompts

The server includes predefined prompts to help with common tasks:

• table-exploration - Guided exploration of a specific table's structure and contents

• data-summary - Generate a summary of the data contained in a table

• relationship-analysis - Analyze relationships between different tables in your database

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.