Dell PowerStore MCP Server

A Model Context Protocol (MCP) server for Dell PowerStore that automatically generates tools from OpenAPI specifications with a credential-free architecture. Enables AI assistants like Claude and automation platforms like n8n to interact with PowerStore storage arrays.

✨ Features

📋 Table of Contents

• Quick Start
• Installation
• Configuration
• Usage
• Integration
• Available Tools
• Architecture
• Development
• Contributing
• License

🚀 Quick Start

# Clone and install
git clone https://github.com/sachdev27/dell-powerstore-mcp-server.git
cd dell-powerstore-mcp-server
pip install -e .

# Run HTTP/SSE server (for n8n)
powerstore-mcp-http

# Or run stdio server (for Claude Desktop)
powerstore-mcp

📦 Installation

From PyPI (Recommended)

pip install dell-powerstore-mcp-server

From Source

# Clone the repository
git clone https://github.com/sachdev27/dell-powerstore-mcp-server.git
cd dell-powerstore-mcp-server

# Create virtual environment
python -m venv .venv
source .venv/bin/activate  # On macOS/Linux
# .venv\Scripts\activate   # On Windows

# Install in development mode
pip install -e ".[dev]"

Using Docker

docker pull ghcr.io/sachdev27/dell-powerstore-mcp-server:latest

# Run with SSE transport
docker run -p 3000:3000 ghcr.io/sachdev27/dell-powerstore-mcp-server:latest

Requirements

• Python: 3.10, 3.11, 3.12, or 3.13
• Dell PowerStore: Any supported version (for actual operations)

⚙️ Configuration

Environment Variables

Example .env File

LOG_LEVEL=info
LOG_FORMAT=json
HTTP_PORT=3000

⚠️ Important: PowerStore credentials are NOT stored in configuration. They are passed securely with each tool call.

📖 Usage

HTTP/SSE Mode (for n8n and Web Clients)

# Using the CLI
powerstore-mcp-http

# Using uvicorn directly
uvicorn powerstore_mcp.http_server:app --host 0.0.0.0 --port 3000

# Using the start script
./start-http.sh

The server provides:

• SSE Endpoint: http://localhost:3000/sse
• Health Check: http://localhost:3000/health
• Metrics: http://localhost:3000/health (detailed JSON response)

stdio Mode (for Claude Desktop)

# Using the CLI
powerstore-mcp

# Using Python module
python -m powerstore_mcp.main

# Using the start script
./start-python.sh

Docker Compose

# Start the server
docker-compose up -d

# View logs
docker-compose logs -f

# Stop the server
docker-compose down

🔗 Integration

n8n AI Agent

1. Add an MCP Client node to your n8n workflow
2. Configure the connection:
   • Transport: SSE
   • URL: http://localhost:3000/sse
3. The 262 PowerStore tools will be available to AI agents

Claude Desktop

Add to your Claude Desktop configuration (claude_desktop_config.json):

{
  "mcpServers": {
    "dell-powerstore": {
      "command": "powerstore-mcp",
      "args": []
    }
  }
}

Or with explicit Python path:

{
  "mcpServers": {
    "dell-powerstore": {
      "command": "/path/to/venv/bin/python",
      "args": ["-m", "powerstore_mcp.main"]
    }
  }
}

Custom MCP Clients

import asyncio
from mcp import ClientSession
from mcp.client.sse import sse_client

async def main():
    async with sse_client("http://localhost:3000/sse") as (read, write):
        async with ClientSession(read, write) as session:
            await session.initialize()

            # List available tools
            tools = await session.list_tools()
            print(f"Found {len(tools.tools)} tools")

            # Call a tool
            result = await session.call_tool("getAppliance", {
                "host": "powerstore.example.com",
                "username": "admin",
                "password": "password"
            })
            print(result)

asyncio.run(main())

🔧 Available Tools

The server dynamically generates 262 tools from the PowerStore OpenAPI specification.

Authentication Parameters

Every tool requires these authentication parameters:

Tool Categories

Query Parameters

All collection endpoints support PowerStore query parameters:

{
  "host": "powerstore.example.com",
  "username": "admin",
  "password": "password",
  "select": "id,name,size",
  "limit": 100,
  "offset": 0,
  "order": "name.asc"
}

🏗️ Architecture

Credential-Free Design

┌─────────────────┐     ┌─────────────────┐     ┌─────────────────┐
│   AI Client     │────▶│   MCP Server    │────▶│   PowerStore    │
│ (Claude/n8n)    │     │ (No Credentials)│     │    Array        │
└─────────────────┘     └─────────────────┘     └─────────────────┘
         │                      │
         │   Tool Call with     │   Per-Request
         │   Credentials        │   Authentication
         ▼                       ▼
    {host, user, pass}      Basic Auth Header

Key Design Principles

• No Stored Credentials: Server starts without any PowerStore connection
• Per-Request Auth: Each tool call includes host/username/password
• Fresh Sessions: New API client created for each request
• Multi-Host Ready: Easily manage multiple PowerStore instances

Module Structure

powerstore_mcp/
├── __init__.py          # Package initialization and version
├── api_client.py        # Async PowerStore API client with retry logic
├── config.py            # Configuration management with validation
├── exceptions.py        # Custom exception hierarchy
├── http_server.py       # HTTP/SSE transport server
├── logging_config.py    # Structured logging configuration
├── main.py              # stdio transport entry point
├── server.py            # Core MCP server with tool handlers
└── tool_generator.py    # OpenAPI parser and tool generator

🧪 Development

Setup Development Environment

# Clone and install with dev dependencies
git clone https://github.com/sachdev27/dell-powerstore-mcp-server.git
cd dell-powerstore-mcp-server
pip install -e ".[dev]"

# Install pre-commit hooks
pre-commit install

Running Tests

# Run all tests
pytest

# Run with coverage
pytest --cov=powerstore_mcp --cov-report=html

# Run specific test file
pytest tests/test_tool_generator.py -v

Code Quality

# Format code
black powerstore_mcp tests

# Lint code
ruff check powerstore_mcp tests

# Type checking
mypy powerstore_mcp

# Security scan
bandit -r powerstore_mcp

Building

# Build distribution packages
python -m build

# Build Docker image
docker build -t dell-powerstore-mcp-server .

🤝 Contributing

Contributions are welcome! Please see CONTRIBUTING.md for guidelines.

1. Fork the repository
2. Create a feature branch (git checkout -b feature/amazing-feature)
3. Commit your changes (git commit -m 'Add amazing feature')
4. Push to the branch (git push origin feature/amazing-feature)
5. Open a Pull Request

📄 License

This project is licensed under the MIT License - see the LICENSE file for details.

📚 Additional Resources

• Model Context Protocol Documentation
• Dell PowerStore Documentation
• n8n MCP Integration Guide