Supabase MCP Server

A Model Context Protocol (MCP) server that provides comprehensive tools for interacting with Supabase databases, storage, and edge functions. This server enables seamless integration between Supabase services and MCP-compatible applications.

Overview

The Supabase MCP server acts as a bridge between MCP clients and Supabase's suite of services, providing:

Database operations with rich querying capabilities
Storage management for files and assets
Edge function invocation
Project and organization management
User authentication and management
Role-based access control

Architecture

The server is built using TypeScript and follows a modular architecture:

supabase-server/
├── src/
│   ├── index.ts              # Main server implementation
│   └── types/
│       └── supabase.d.ts     # Type definitions
├── package.json
├── tsconfig.json
├── config.json.example       # Example configuration file
└── .env.example             # Environment variables template

Key Components

Server Class: Implements the MCP server interface and handles all client requests
Type Definitions: Comprehensive TypeScript definitions for all operations
Environment Configuration: Secure configuration management via environment variables
Error Handling: Robust error handling with detailed error messages

Prerequisites

Node.js 16.x or higher
A Supabase project with:
- Project URL
- Service Role Key (for admin operations)
- Access Token (for management operations)
MCP-compatible client

Installation

Installing via Smithery

To install Supabase Server for Claude Desktop automatically via Smithery:

npx -y @smithery/cli install supabase-server --client claude

Clone the repository:

git clone https://github.com/DynamicEndpoints/supabase-mcp.git
cd supabase-mcp

Install dependencies:

npm install

Create environment configuration:

cp .env.example .env

Configure environment variables:

SUPABASE_URL=your_project_url_here
SUPABASE_KEY=your_service_role_key_here
SUPABASE_ACCESS_TOKEN=your_access_token_here  # Required for management operations

Create server configuration:

cp config.json.example config.json

Build the server:

npm run build

Configuration

The server supports extensive configuration through both environment variables and a config.json file. Here's a detailed breakdown of the configuration options:

Server Configuration

{
  "server": {
    "name": "supabase-server",    // Server name
    "version": "0.1.0",           // Server version
    "port": 3000,                 // Port number (if running standalone)
    "host": "localhost"           // Host address (if running standalone)
  }
}

Supabase Configuration

{
  "supabase": {
    "project": {
      "url": "your_project_url",
      "key": "your_service_role_key",
      "accessToken": "your_access_token"
    },
    "storage": {
      "defaultBucket": "public",           // Default storage bucket
      "maxFileSize": 52428800,            // Max file size in bytes (50MB)
      "allowedMimeTypes": [               // Allowed file types
        "image/*",
        "application/pdf",
        "text/*"
      ]
    },
    "database": {
      "maxConnections": 10,               // Max DB connections
      "timeout": 30000,                   // Query timeout in ms
      "ssl": true                         // SSL connection
    },
    "auth": {
      "autoConfirmUsers": false,          // Auto-confirm new users
      "disableSignup": false,             // Disable public signups
      "jwt": {
        "expiresIn": "1h",               // Token expiration
        "algorithm": "HS256"              // JWT algorithm
      }
    }
  }
}

Logging Configuration

{
  "logging": {
    "level": "info",                      // Log level
    "format": "json",                     // Log format
    "outputs": ["console", "file"],       // Output destinations
    "file": {
      "path": "logs/server.log",          // Log file path
      "maxSize": "10m",                   // Max file size
      "maxFiles": 5                       // Max number of files
    }
  }
}

Security Configuration

{
  "security": {
    "cors": {
      "enabled": true,
      "origins": ["*"],
      "methods": ["GET", "POST", "PUT", "DELETE", "OPTIONS"],
      "allowedHeaders": ["Content-Type", "Authorization"]
    },
    "rateLimit": {
      "enabled": true,
      "windowMs": 900000,                 // 15 minutes
      "max": 100                          // Max requests per window
    }
  }
}

Monitoring Configuration

{
  "monitoring": {
    "enabled": true,
    "metrics": {
      "collect": true,
      "interval": 60000                   // Collection interval in ms
    },
    "health": {
      "enabled": true,
      "path": "/health"                   // Health check endpoint
    }
  }
}

See config.json.example for a complete example configuration file.

MCP Integration

Add the server to your MCP settings (cline_mcp_settings.json):

{
  "mcpServers": {
    "supabase": {
      "command": "node",
      "args": ["path/to/supabase-server/build/index.js"],
      "env": {
        "SUPABASE_URL": "your_project_url",
        "SUPABASE_KEY": "your_service_role_key",
        "SUPABASE_ACCESS_TOKEN": "your_access_token"
      },
      "config": "path/to/config.json"  // Optional: path to configuration file
    }
  }
}

Available Tools

Database Operations

create_record

Create a new record in a table with support for returning specific fields.

{
  table: string;
  data: Record<string, any>;
  returning?: string[];
}

Example:

{
  table: "users",
  data: {
    name: "John Doe",
    email: "john@example.com"
  },
  returning: ["id", "created_at"]
}

read_records

Read records with advanced filtering, joins, and field selection.

{
  table: string;
  select?: string[];
  filter?: Record<string, any>;
  joins?: Array<{
    type?: 'inner' | 'left' | 'right' | 'full';
    table: string;
    on: string;
  }>;
}

Example:

{
  table: "posts",
  select: ["id", "title", "user.name"],
  filter: { published: true },
  joins: [{
    type: "left",
    table: "users",
    on: "posts.user_id=users.id"
  }]
}

update_record

Update records with filtering and returning capabilities.

{
  table: string;
  data: Record<string, any>;
  filter?: Record<string, any>;
  returning?: string[];
}

Example:

{
  table: "users",
  data: { status: "active" },
  filter: { email: "john@example.com" },
  returning: ["id", "status", "updated_at"]
}

delete_record

Delete records with filtering and returning capabilities.

{
  table: string;
  filter?: Record<string, any>;
  returning?: string[];
}

Example:

{
  table: "posts",
  filter: { status: "draft" },
  returning: ["id", "title"]
}

Storage Operations

upload_file

Upload files to Supabase Storage with configurable options.

{
  bucket: string;
  path: string;
  file: File | Blob;
  options?: {
    cacheControl?: string;
    contentType?: string;
    upsert?: boolean;
  };
}

Example:

{
  bucket: "avatars",
  path: "users/123/profile.jpg",
  file: imageBlob,
  options: {
    contentType: "image/jpeg",
    upsert: true
  }
}

download_file

Download files from Supabase Storage.

{
  bucket: string;
  path: string;
}

Example:

{
  bucket: "documents",
  path: "reports/annual-2023.pdf"
}

Edge Functions

invoke_function

Invoke Supabase Edge Functions with parameters and custom options.

{
  function: string;
  params?: Record<string, any>;
  options?: {
    headers?: Record<string, string>;
    responseType?: 'json' | 'text' | 'arraybuffer';
  };
}

Example:

{
  function: "process-image",
  params: {
    url: "https://example.com/image.jpg",
    width: 800
  },
  options: {
    responseType: "json"
  }
}

User Management

list_users

List users with pagination support.

{
  page?: number;
  per_page?: number;
}

create_user

Create a new user with metadata.

{
  email: string;
  password: string;
  data?: Record<string, any>;
}

update_user

Update user details.

{
  user_id: string;
  email?: string;
  password?: string;
  data?: Record<string, any>;
}

delete_user

Delete a user.

{
  user_id: string;
}

assign_user_role

Assign a role to a user.

{
  user_id: string;
  role: string;
}

remove_user_role

Remove a role from a user.

{
  user_id: string;
  role: string;
}

Error Handling

The server provides detailed error messages for common scenarios:

Invalid parameters
Authentication failures
Permission issues
Rate limiting
Network errors
Database constraints

Errors are returned in a standardized format:

{
  code: ErrorCode;
  message: string;
  details?: any;
}

Development

Running Tests

npm test

Building

npm run build

Linting

npm run lint

Contributing

Fork the repository
Create a feature branch
Commit your changes
Push to the branch
Create a Pull Request

License

MIT License - see LICENSE for details

Support

For support, please:

Check the issues for existing problems/solutions
Create a new issue with detailed reproduction steps
Include relevant error messages and environment details

Integrations

Supabase MCP Server

Overview

Architecture

Key Components

Prerequisites

Installation

Installing via Smithery

Configuration

Server Configuration

Supabase Configuration

Logging Configuration

Security Configuration

Monitoring Configuration

MCP Integration

Available Tools

Database Operations

create_record

read_records

update_record

delete_record

Storage Operations

upload_file

download_file

Edge Functions

invoke_function

User Management

list_users

create_user

update_user

delete_user

assign_user_role

remove_user_role

Error Handling

Development

Running Tests

Building

Linting

Contributing

License

Support

Tools

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