Nile

A Model Context Protocol (MCP) server implementation for Nile database platform. This server allows LLM applications to interact with Nile platform through a standardized interface.

Features

• Database Management: Create, list, get details, and delete databases
• Credential Management: Create and list database credentials
• Region Management: List available regions for database creation
• SQL Query Support: Execute SQL queries directly on Nile databases
• MCP Protocol Support: Full implementation of the Model Context Protocol
• Type Safety: Written in TypeScript with full type checking
• Error Handling: Comprehensive error handling and user-friendly error messages
• Test Coverage: Comprehensive test suite using Jest
• Environment Management: Automatic loading of environment variables from .env file
• Input Validation: Schema-based input validation using Zod

Installation

Install the stable version:

npm install @niledatabase/nile-mcp-server

For the latest alpha/preview version:

npm install @niledatabase/nile-mcp-server@alpha

This will install @niledatabase/nile-mcp-server in your node_modules folder. For example: node_modules/@niledatabase/nile-mcp-server/dist/

Manual Installation

# Clone the repository
git clone https://github.com/yourusername/nile-mcp-server.git
cd nile-mcp-server

# Install dependencies
npm install

# Build the project
npm run build

Other mcp package managers

1. npx @michaellatman/mcp-get@latest install @niledatabase/nile-mcp-server

Starting the Server

There are several ways to start the server:

1. Direct Node Execution:

   node dist/index.js

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2. Development Mode (with auto-rebuild):

   npm run dev

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The server will start and listen for MCP protocol messages. You should see startup logs indicating:

• Environment variables loaded
• Server instance created
• Tools initialized
• Transport connection established

To stop the server, press Ctrl+C.

Verifying the Server is Running

When the server starts successfully, you should see logs similar to:

[info] Starting Nile MCP Server...
[info] Loading environment variables...
[info] Environment variables loaded successfully
[info] Creating server instance...
[info] Tools initialized successfully
[info] Setting up stdio transport...
[info] Server started successfully

If you see these logs, the server is ready to accept commands from Claude Desktop.

Configuration

Create a .env file in the root directory with your Nile credentials:

NILE_API_KEY=your_api_key_here
NILE_WORKSPACE_SLUG=your_workspace_slug

To create a Nile API key, log in to your Nile account, click Workspaces in the top-left, select your workspace, and navigate to the Security section in the left menu.

Using with Claude Desktop

Setup

1. Install Claude Desktop if you haven't already
2. Build the project:

   npm run build

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3. Open Claude Desktop
4. Go to Settings > MCP Servers
5. Click "Add Server"
6. Add the following configuration:

{
  "mcpServers": {
    "nile-database": {
      "command": "node",
      "args": [
        "/path/to/your/nile-mcp-server/dist/index.js"
      ],
      "env": {
        "NILE_API_KEY": "your_api_key_here",
        "NILE_WORKSPACE_SLUG": "your_workspace_slug"
      }
    }
  }
}

Replace:

• /path/to/your/nile-mcp-server with the absolute path to your project directory
• your_api_key_here with your Nile API key
• your_workspace_slug with your Nile workspace slug

Using with Cursor

Setup

1. Install Cursor if you haven't already
2. Build the project:

   npm run build

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3. Open Cursor
4. Go to Settings (⌘,) > Features > MCP Servers
5. Click "Add New MCP Server"
6. Configure the server:
   • Name: nile-database (or any name you prefer)
   • Command:

     env NILE_API_KEY=your_key NILE_WORKSPACE_SLUG=your_workspace node /absolute/path/to/nile-mcp-server/dist/index.js

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     Replace:
     • your_key with your Nile API key
     • your_workspace with your Nile workspace slug
     • /absolute/path/to with the actual path to your project
7. Click "Save"
8. You should see a green indicator showing that the MCP server is connected
9. Restart Cursor for the changes to take effect

Server Modes

The server supports two operational modes:

STDIO Mode (Default)

The default mode uses standard input/output for communication, making it compatible with Claude Desktop and Cursor integrations.

SSE Mode

Server-Sent Events (SSE) mode enables real-time, event-driven communication over HTTP.

To enable SSE mode:

1. Set MCP_SERVER_MODE=sse in your .env file
2. The server will start an HTTP server (default port 3000)
3. Connect to the SSE endpoint: http://localhost:3000/sse
4. Send commands to: http://localhost:3000/messages

Example SSE usage with curl:

# In terminal 1 - Listen for events
curl -N http://localhost:3000/sse

# In terminal 2 - Send commands
curl -X POST http://localhost:3000/messages \
  -H "Content-Type: application/json" \
  -d '{
    "type": "function",
    "name": "list-databases",
    "parameters": {}
  }'

Example Prompts

After setting up the MCP server in Cursor, you can use natural language to interact with Nile databases. Here are some example prompts:

Database Management

Create a new database named "my_app" in AWS_US_WEST_2 region

List all my databases

Get details for database "my_app"

Delete database "test_db"

Creating Tables

Create a users table in my_app database with columns:
- tenant_id (UUID, references tenants)
- id (INTEGER)
- email (VARCHAR, unique per tenant)
- name (VARCHAR)
- created_at (TIMESTAMP)

Create a products table in my_app database with columns:
- tenant_id (UUID, references tenants)
- id (INTEGER)
- name (VARCHAR)
- price (DECIMAL)
- description (TEXT)
- created_at (TIMESTAMP)

Querying Data

Execute this query on my_app database:
SELECT * FROM users WHERE tenant_id = 'your-tenant-id' LIMIT 5

Run this query on my_app:
INSERT INTO users (tenant_id, id, email, name) 
VALUES ('tenant-id', 1, 'user@example.com', 'John Doe')

Show me all products in my_app database with price > 100

Schema Management

Show me the schema for the users table in my_app database

Add a new column 'status' to the users table in my_app database

Create an index on the email column of the users table in my_app

Available Tools

The server provides the following tools for interacting with Nile databases:

Database Management

1. create-database

   • Creates a new Nile database
   • Parameters:
     • name (string): Name of the database
     • region (string): Either AWS_US_WEST_2 (Oregon) or AWS_EU_CENTRAL_1 (Frankfurt)
   • Returns: Database details including ID, name, region, and status
   • Example: "Create a database named 'my-app' in AWS_US_WEST_2"

2. list-databases

   • Lists all databases in your workspace
   • No parameters required
   • Returns: List of databases with their IDs, names, regions, and status
   • Example: "List all my databases"

3. get-database

   • Gets detailed information about a specific database
   • Parameters:
     • name (string): Name of the database
   • Returns: Detailed database information including API host and DB host
   • Example: "Get details for database 'my-app'"

4. delete-database

   • Deletes a database
   • Parameters:
     • name (string): Name of the database to delete
   • Returns: Confirmation message
   • Example: "Delete database 'my-app'"

Credential Management

1. list-credentials

   • Lists all credentials for a database
   • Parameters:
     • databaseName (string): Name of the database
   • Returns: List of credentials with IDs, usernames, and creation dates
   • Example: "List credentials for database 'my-app'"

2. create-credential

   • Creates new credentials for a database
   • Parameters:
     • databaseName (string): Name of the database
   • Returns: New credential details including username and one-time password
   • Example: "Create new credentials for database 'my-app'"
   • Note: Save the password when it's displayed, as it won't be shown again

Region Management

1. list-regions
   • Lists all available regions for creating databases
   • No parameters required
   • Returns: List of available AWS regions
   • Example: "What regions are available for creating databases?"

SQL Query Execution

1. execute-sql
   • Executes SQL queries on a Nile database
   • Parameters:
     • databaseName (string): Name of the database to query
     • query (string): SQL query to execute
     • connectionString (string, optional): Pre-existing connection string to use for the query
   • Returns: Query results formatted as a markdown table with column headers and row count
   • Features:
     • Automatic credential management (creates new if not specified)
     • Secure SSL connection to database
     • Results formatted as markdown tables
     • Detailed error messages with hints
     • Support for using existing connection strings
   • Example: "Execute SELECT * FROM users LIMIT 5 on database 'my-app'"

Resource Management

1. read-resource

   • Reads schema information for database resources (tables, views, etc.)
   • Parameters:
     • databaseName (string): Name of the database
     • resourceName (string): Name of the resource (table/view)
   • Returns: Detailed schema information including:
     • Column names and types
     • Primary keys and indexes
     • Foreign key relationships
     • Column descriptions and constraints
   • Example: "Show me the schema for the users table in my-app"

2. list-resources

   • Lists all resources (tables, views) in a database
   • Parameters:
     • databaseName (string): Name of the database
   • Returns: List of all resources with their types
   • Example: "List all tables in my-app database"

Tenant Management

1. list-tenants

   • Lists all tenants in a database
   • Parameters:
     • databaseName (string): Name of the database
   • Returns: List of tenants with their IDs and metadata
   • Example: "Show all tenants in my-app database"

2. create-tenant

   • Creates a new tenant in a database
   • Parameters:
     • databaseName (string): Name of the database
     • tenantName (string): Name for the new tenant
   • Returns: New tenant details including ID
   • Example: "Create a tenant named 'acme-corp' in my-app"

3. delete-tenant

   • Deletes tenants in the database
   • Parameters:
     • databaseName (string): Name of the database
     • tenantName (string): Name for the tenant
   • Returns: Success if the tenant is deleted
   • Example: "Delete tenant named 'acme-corp' in my-app"

Example Usage

Here are some example commands you can use in Claude Desktop:

# Database Management
Please create a new database named "my-app" in the AWS_US_WEST_2 region.
Can you list all my databases?
Get the details for database "my-app".
Delete the database named "test-db".

#

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