Supabase Mcp Server

Query | MCP server for Supabase

> 🌅 More than 17k installs via pypi and close to 30k downloads on Smithery.ai — in short, this was fun! 🥳 > Thanks to everyone who has been using this server for the past few months, and I hope it was useful for you. > Since Supabase has released their own official MCP server, > I've decided to no longer actively maintain this one. The official MCP server is as feature-rich, and many more > features will be added in the future. Check it out!

Query MCP is an open-source MCP server that lets your IDE safely run SQL, manage schema changes, call the Supabase Management API, and use Auth Admin SDK — all with built-in safety controls.

Table of contents

Getting started • Feature overview • Troubleshooting • Changelog

✨ Key features

• 💻 Compatible with Cursor, Windsurf, Cline and other MCP clients supporting stdio protocol
• 🔐 Control read-only and read-write modes of SQL query execution
• 🔍 Runtime SQL query validation with risk level assessment
• 🛡️ Three-tier safety system for SQL operations: safe, write, and destructive
• 🔄 Robust transaction handling for both direct and pooled database connections
• 📝 Automatic versioning of database schema changes
• 💻 Manage your Supabase projects with Supabase Management API
• 🧑‍💻 Manage users with Supabase Auth Admin methods via Python SDK
• 🔨 Pre-built tools to help Cursor & Windsurf work with MCP more effectively
• 📦 Dead-simple install & setup via package manager (uv, pipx, etc.)

Getting Started

Prerequisites

Installing the server requires the following on your system:

• Python 3.12+

If you plan to install via uv, ensure it's installed.

PostgreSQL Installation

PostgreSQL installation is no longer required for the MCP server itself, as it now uses asyncpg which doesn't depend on PostgreSQL development libraries.

However, you'll still need PostgreSQL if you're running a local Supabase instance:

MacOS

brew install postgresql@16

Windows

• Download and install PostgreSQL 16+ from https://www.postgresql.org/download/windows/
• Ensure "PostgreSQL Server" and "Command Line Tools" are selected during installation

Step 1. Installation

Since v0.2.0 I introduced support for package installation. You can use your favorite Python package manager to install the server via:

# if pipx is installed (recommended)
pipx install supabase-mcp-server

# if uv is installed
uv pip install supabase-mcp-server

pipx is recommended because it creates isolated environments for each package.

You can also install the server manually by cloning the repository and running pipx install -e . from the root directory.

Installing from source

If you would like to install from source, for example for local development:

uv venv
# On Mac
source .venv/bin/activate
# On Windows
.venv\Scripts\activate
# Install package in editable mode
uv pip install -e .

Installing via Smithery.ai

You can find the full instructions on how to use Smithery.ai to connect to this MCP server here.

Step 2. Configuration

The Supabase MCP server requires configuration to connect to your Supabase database, access the Management API, and use the Auth Admin SDK. This section explains all available configuration options and how to set them up.

> 🔑 Important: Since v0.4 MCP server requires an API key which you can get for free at thequery.dev to use this MCP server.

Environment Variables

The server uses the following environment variables:

| Variable | Required | Default | Description | |----------|----------|---------|-------------| | SUPABASE_PROJECT_REF | Yes | 127.0.0.1:54322 | Your Supabase project reference ID (or local host:port) | | SUPABASE_DB_PASSWORD | Yes | postgres | Your database password | | SUPABASE_REGION | Yes* | us-east-1 | AWS region where your Supabase project is hosted | | SUPABASE_ACCESS_TOKEN | No | None | Personal access token for Supabase Management API | | SUPABASE_SERVICE_ROLE_KEY | No | None | Service role key for Auth Admin SDK | | QUERY_API_KEY | Yes | None | API key from thequery.dev (required for all operations) |

> Note: The default values are configured for local Supabase development. For remote Supabase projects, you must provide your own values for SUPABASE_PROJECT_REF and SUPABASE_DB_PASSWORD.

> 🚨 CRITICAL CONFIGURATION NOTE: For remote Supabase projects, you MUST specify the correct region where your project is hosted using SUPABASE_REGION. If you encounter a "Tenant or user not found" error, this is almost certainly because your region setting doesn't match your project's actual region. You can find your project's region in the Supabase dashboard under Project Settings.

Connection Types

Database Connection

• The server connects to your Supabase PostgreSQL database using the transaction pooler endpoint
• Local development uses a direct connection to 127.0.0.1:54322
• Remote projects use the format: postgresql://postgres.[project_ref]:[password]@aws-0-[region].pooler.supabase.com:6543/postgres

> ⚠️ Important: Session pooling connections are not supported. The server exclusively uses transaction pooling for better compatibility with the MCP server architecture.

Management API Connection

• Requires SUPABASE_ACCESS_TOKEN to be set
• Connects to the Supabase Management API at https://api.supabase.com
• Only works with remote Supabase projects (not local development)

Auth Admin SDK Connection

• Requires SUPABASE_SERVICE_ROLE_KEY to be set
• For local development, connects to http://127.0.0.1:54321
• For remote projects, connects to https://[project_ref].supabase.co

Configuration Methods

The server looks for configuration in this order (highest to lowest priority):

1. Environment Variables: Values set directly in your environment
2. Local .env File: A .env file in your current working directory (only works when running from source)
3. Global Config File:

• Windows: %APPDATA%\supabase-mcp\.env
• macOS/Linux: ~/.config/supabase-mcp/.env

1. Default Settings: Local development defaults (if no other config is found)

> ⚠️ Important: When using the package installed via pipx or uv, local .env files in your project directory are not detected. You must use either environment variables or the global config file.

Setting Up Configuration

Option 1: Client-Specific Configuration (Recommended)

Set environment variables directly in your MCP client configuration (see client-specific setup instructions in Step 3). Most MCP clients support this approach, which keeps your configuration with your client settings.

Option 2: Global Configuration

Create a global .env configuration file that will be used for all MCP server instances:

# Create config directory
# On macOS/Linux
mkdir -p ~/.config/supabase-mcp
# On Windows (PowerShell)
mkdir -Force "$env:APPDATA\supabase-mcp"

# Create and edit .env file
# On macOS/Linux
nano ~/.config/supabase-mcp/.env
# On Windows (PowerShell)
notepad "$env:APPDATA\supabase-mcp\.env"

Add your configuration values to the file:

QUERY_API_KEY=your-api-key
SUPABASE_PROJECT_REF=your-project-ref
SUPABASE_DB_PASSWORD=your-db-password
SUPABASE_REGION=us-east-1
SUPABASE_ACCESS_TOKEN=your-access-token
SUPABASE_SERVICE_ROLE_KEY=your-service-role-key

Option 3: Project-Specific Configuration (Source Installation Only)

If you're running the server from source (not via package), you can create a .env file in your project directory with the same format as above.

Finding Your Supabase Project Information

• Project Reference: Found in your Supabase project URL: https://supabase.com/dashboard/project/
• Database Password: Set during project creation or found in Project Settings → Database
• Access Token: Generate at https://supabase.com/dashboard/account/tokens
• Service Role Key: Found in Project Settings → API → Project API keys

Supported Regions

The server supports all Supabase regions:

• us-west-1 - West US (North California)
• us-east-1 - East US (North Virginia) - default
• us-east-2 - East US (Ohio)
• ca-central-1 - Canada (Central)
• eu-west-1 - West EU (Ireland)
• eu-west-2 - West Europe (London)
• eu-west-3 - West EU (Paris)
• eu-central-1 - Central EU (Frankfurt)
• eu-central-2 - Central Europe (Zurich)
• eu-north-1 - North EU (Stockholm)
• ap-south-1 - South Asia (Mumbai)
• ap-southeast-1 - Southeast Asia (Singapore)
• ap-northeast-1 - Northeast Asia (Tokyo)
• ap-northeast-2 - Northeast Asia (Seoul)
• ap-southeast-2 - Oceania (Sydney)
• sa-east-1 - South America (São Paulo)

Limitations

• No Self-Hosted Support: The server only supports official Supabase.com hosted projects and local development
• No Connection String Support: Custom connection strings are not supported
• No Session Pooling: Only transaction pooling is supported for database connections
• API and SDK Features: Management API and Auth Admin SDK features only work with remote Supabase projects, not local development

Step 3. Usage

In general, any MCP client that supports stdio protocol should work with this MCP server. This server was explicitly tested to work with:

• Cursor
• Windsurf
• Cline
• Claude Desktop

Additionally, you can also use smithery.ai to install this server a number of clients, including the ones above.

Follow the guides below to install this MCP server in your client.

Cursor

Go to Settings -> Features -> MCP Servers and add a new server with this configuration:

# can be set to any name
name: supabase
type: command
# if you installed with pipx
command: supabase-mcp-server
# if you installed with uv
command: uv run supabase-mcp-server
# if the above doesn't work, use the full path (recommended)
command: /full/path/to/supabase-mcp-server  # Find with 'which supabase-mcp-server' (macOS/Linux) or 'where supabase-mcp-server' (Windows)

If configuration is correct, you should see a green dot indicator and the number of tools exposed by the server.

Windsurf

Go to Cascade -> Click on the hammer icon -> Configure -> Fill in the configuration:

{
    "mcpServers": {
      "supabase": {
        "command": "/Users/username/.local/bin/supabase-mcp-server",  // update path
        "env": {
          "QUERY_API_KEY": "your-api-key",  // Required - get your API key at thequery.dev
          "SUPABASE_PROJECT_REF": "your-project-ref",
          "SUPABASE_DB_PASSWORD": "your-db-password",
          "SUPABASE_REGION": "us-east-1",  // optional, defaults to us-east-1
          "SUPABASE_ACCESS_TOKEN": "your-access-token",  // optional, for management API
          "SUPABASE_SERVICE_ROLE_KEY": "your-service-role-key"  // optional, for Auth Admin SDK
        }
      }
    }
}

If configuration is correct, you should see green dot indicator and clickable supabase server in the list of available servers.

Claude Desktop

Claude Desktop also supports MCP servers through a JSON configuration. Follow these steps to set up the Supabase MCP server:

1. Find the full path to the executable (this step is critical):

```bash # On macOS/Linux which supabase-mcp-server

# On Windows where supabase-mcp-server `` Copy the full path that is returned (e.g., /Users/username/.local/bin/supabase-mcp-server`).

1. Configure the MCP server in Claude Desktop:

• Open Claude Desktop
• Go to Settings → Developer -> Edit Config MCP Servers
• Add a new configuration with the following JSON:

``json { "mcpServers": { "supabase": { "command": "/full/path/to/supabase-mcp-server", // Replace with the actual path from step 1 "env": { "QUERY_API_KEY": "your-api-key", // Required - get your API key at thequery.dev "SUPABASE_PROJECT_REF": "your-project-ref", "SUPABASE_DB_PASSWORD": "your-db-password", "SUPABASE_REGION": "us-east-1", // optional, defaults to us-east-1 "SUPABASE_ACCESS_TOKEN": "your-access-token", // optional, for management API "SUPABASE_SERVICE_ROLE_KEY": "your-service-role-key" // optional, for Auth Admin SDK } } } } ``

> ⚠️ Important: Unlike Windsurf and Cursor, Claude Desktop requires the full absolute path to the executable. Using just the command name (supabase-mcp-server) will result in a "spawn ENOENT" error.

If configuration is correct, you should see the Supabase MCP server listed as available in Claude Desktop.

Cline

Cline also supports MCP servers through a similar JSON configuration. Follow these steps to set up the Supabase MCP server:

1. Find the full path to the executable (this step is critical):

```bash # On macOS/Linux which supabase-mcp-server

# On Windows where supabase-mcp-server `` Copy the full path that is returned (e.g., /Users/username/.local/bin/supabase-mcp-server`).

1. Configure the MCP server in Cline:

• Open Cline in VS Code
• Click on the "MCP Servers" tab in the Cline sidebar
• Click "Configure MCP Servers"
• This will open the cline_mcp_settings.json file
• Add the following configuration:

``json { "mcpServers": { "supabase": { "command": "/full/path/to/supabase-mcp-server", // Replace with the actual path from step 1 "env": { "QUERY_API_KEY": "your-api-key", // Required - get your API key at thequery.dev "SUPABASE_PROJECT_REF": "your-project-ref", "SUPABASE_DB_PASSWORD": "your-db-password", "SUPABASE_REGION": "us-east-1", // optional, defaults to us-east-1 "SUPABASE_ACCESS_TOKEN": "your-access-token", // optional, for management API "SUPABASE_SERVICE_ROLE_KEY": "your-service-role-key" // optional, for Auth Admin SDK } } } } ``

If configuration is correct, you should see a green indicator next to the Supabase MCP server in the Cline MCP Servers list, and a message confirming "supabase MCP server connected" at the bottom of the panel.

Troubleshooting

Here are some tips & tricks that might help you:

• Debug installation - run supabase-mcp-server directly from the terminal to see if it works. If it doesn't, there might be an issue with the installation.
• MCP Server configuration - if the above step works, it means the server is installed and configured correctly. As long as you provided the right command, IDE should be able to connect. Make sure to provide the right path to the server executable.
• "No tools found" error - If you see "Client closed - no tools available" in Cursor despite the package being installed:
• Find the full path to the executable by running which supabase-mcp-server (macOS/Linux) or where supabase-mcp-server (Windows)
• Use the full path in your MCP server configuration instead of just supabase-mcp-server
• For example: /Users/username/.local/bin/supabase-mcp-server or C:\Users\username\.local\bin\supabase-mcp-server.exe
• Environment variables - to connect to the right database, make sure you either set env variables in mcp_config.json or in .env file placed in a global config directory (~/.config/supabase-mcp/.env on macOS/Linux or %APPDATA%\supabase-mcp\.env on Windows).
• Accessing logs - The MCP server writes detailed logs to a file:
• Log file location:
• macOS/Linux: ~/.local/share/supabase-mcp/mcp_server.log
• Windows: %USERPROFILE%\.local\share\supabase-mcp\mcp_server.log
• Logs include connection status, co

…

Source & license

This open-source MCP server is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: alexander-zuev
• Source: alexander-zuev/supabase-mcp-server
• License: Apache-2.0

Install and usage instructions live in the source repository linked above.