OpManager MCP Server

A credential-less Model Context Protocol (MCP) server for ManageEngine OpManager REST API integration. This server enables AI assistants like Claude to interact with your OpManager infrastructure through natural language.

✨ Key Features

• 🔐 Credential-less Design: No hardcoded API keys - users provide host and apiKey per request
• 🔄 SSL Auto-Detection: Port 8061 → HTTPS, Port 8060 → HTTP (with manual override)
• 📡 85+ API Endpoints: Full OpManager API coverage for devices, alarms, dashboards, discovery, and more
• 🛠 Dynamic Tool Generation: Automatically generates MCP tools from OpenAPI specification
• 🌐 Multiple Transports: Supports stdio (Claude Desktop) and HTTP/SSE (n8n, web clients)
• 🐳 Docker Ready: Containerized deployment with Docker and Docker Compose

🚀 Quick Start

Installation

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

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

# Install the package
pip install -e ".[http]"

Start the HTTP Server

uvicorn opmanager_mcp.http_server:app --host 0.0.0.0 --port 3000

Test a Tool Call

curl -X POST http://localhost:3000/call \
  -H "Content-Type: application/json" \
  -d '{
    "name": "opmanager_get_allDevices",
    "arguments": {
      "host": "opmanager.example.com",
      "apiKey": "your-api-key-here",
      "port": 8061
    }
  }'

📋 Configuration

Environment Variables

Create a .env file (optional - for server defaults only):

cp .env.example .env

Variable	Description	Default
MCP_SERVER_LOG_LEVEL	Logging level	INFO
ALLOWED_HTTP_METHODS	Allowed HTTP methods for tools	GET,POST,PUT,DELETE,PATCH
LOCAL_OPENAPI_SPEC_PATH	Path to OpenAPI spec	bundled openapi.json

Note: OPMANAGER_HOST and OPMANAGER_API_KEY are NOT configured server-side. Users provide these per-request for security.

Getting Your OpManager API Key

1. Log in to OpManager web console
2. Navigate to Settings → REST API
3. Generate a new API key
4. Use this key in your tool calls

🔧 Tool Parameters

Every tool accepts these connection parameters:

Parameter	Required	Description
host	✅ Yes	OpManager server hostname
apiKey	✅ Yes	API key for authentication
port	No	Server port (default: 8060)
use_ssl	No	Force SSL (auto-detected from port)
verify_ssl	No	Verify SSL certificates (default: true)

SSL Auto-Detection

• Port 8061: Automatically uses HTTPS
• Port 8060: Automatically uses HTTP
• Override with use_ssl: true/false if needed

🌐 HTTP API Endpoints

Endpoint	Method	Description
/health	GET	Health check with tool count
/tools	GET	List all available tools
/sse	GET	SSE connection for MCP
/messages	POST	MCP message handler
/call	POST	Direct tool invocation

Health Check

curl http://localhost:3000/health
# {"status":"healthy","tool_count":60}

List Tools

curl http://localhost:3000/tools | jq '.tools[].name'

🤖 n8n Integration

1. Start the HTTP server on port 3000
2. In n8n, add an AI Agent node with MCP Client tool
3. Configure the MCP Client:
   • SSE URL: http://localhost:3000/sse
   • Messages URL: http://localhost:3000/messages

Example System Prompt for n8n

You are an IT operations assistant with access to OpManager for network monitoring.

When using OpManager tools, always include:
- host: "opmanager.company.com"
- apiKey: "your-api-key"
- port: 8061 (for HTTPS)

Available operations:
- List all devices: opmanager_get_allDevices
- Get device details: opmanager_get_device (requires deviceName)
- List alarms: opmanager_get_alarms
- Acknowledge alarm: opmanager_add_alarmNotes

🖥 Claude Desktop Integration

Add to your Claude Desktop config (~/Library/Application Support/Claude/claude_desktop_config.json):

{
  "mcpServers": {
    "opmanager": {
      "command": "python",
      "args": ["-m", "opmanager_mcp.main"],
      "cwd": "/path/to/opmanager-mcp-server",
      "env": {
        "LOCAL_OPENAPI_SPEC_PATH": "/path/to/opmanager-mcp-server/openapi.json"
      }
    }
  }
}

Note: With Claude Desktop, you'll tell Claude your OpManager host and API key in conversation, and it will include them in tool calls.

🛠 Available Tools (60+ GET operations)

Devices

• opmanager_get_allDevices - List all monitored devices
• opmanager_get_device - Get device details by name
• opmanager_get_deviceAvailability - Device availability history

Alarms

• opmanager_get_alarms - List alarms with filtering
• opmanager_get_alarmDetails - Get alarm details
• opmanager_add_alarmNotes - Add notes/acknowledge alarm

Discovery

• opmanager_get_discoveryStatus - Check discovery progress
• opmanager_add_discovery - Start network discovery

Reports & Dashboards

• opmanager_get_allDashboards - List all dashboards
• opmanager_get_scheduledReports - List scheduled reports

And more...

Run curl http://localhost:3000/tools to see all available tools.

🐳 Docker

Build and Run

docker build -t opmanager-mcp-server .
docker run -d -p 3000:3000 --name opmanager-mcp opmanager-mcp-server

Docker Compose

docker-compose up -d

🧪 Development

Run Tests

# Install dev dependencies
pip install -e ".[dev]"

# Run all tests
pytest

# Run with coverage
pytest --cov=opmanager_mcp --cov-report=term-missing

# Current: 32 tests, 50% coverage

Code Quality

# Format
black opmanager_mcp tests
isort opmanager_mcp tests

# Lint
ruff check opmanager_mcp tests

# Type check
mypy opmanager_mcp

Regenerate OpenAPI Spec

python generate_openapi.py

📁 Project Structure

opmanager-mcp-server/
├── opmanager_mcp/
│   ├── __init__.py          # Package exports
│   ├── api_client.py        # HTTP client for OpManager API
│   ├── config.py            # Configuration management
│   ├── exceptions.py        # Custom exceptions
│   ├── http_server.py       # HTTP/SSE server (Pure ASGI)
│   ├── logging_config.py    # Logging configuration
│   ├── main.py              # CLI entry point
│   ├── server.py            # MCP server implementation
│   └── tool_generator.py    # OpenAPI to MCP tool converter
├── tests/
│   ├── conftest.py          # Test fixtures
│   ├── test_api_client.py   # API client tests
│   ├── test_config.py       # Config tests
│   ├── test_http_server.py  # HTTP server tests
│   ├── test_server.py       # MCP server tests
│   └── test_tool_generator.py # Tool generation tests
├── openapi.json             # OpManager OpenAPI specification
├── pyproject.toml           # Project configuration
├── Dockerfile               # Container image
├── docker-compose.yml       # Compose configuration
└── README.md                # This file

📄 License

MIT License - see LICENSE for details.

🙏 Acknowledgments

• Built with Model Context Protocol SDK
• OpManager REST API by ManageEngine