Deluge MCP Server# Deluge MCP Server# Deluge MCP Server

A Model Context Protocol (MCP) server for managing Deluge torrent client. Built with FastMCP v2 for production-ready performance.

FeaturesA Model Context Protocol (MCP) server for managing Deluge BitTorrent client via command-line interface.A Model Context Protocol (MCP) server that provides AI assistants with tools to

• 🚀 Two MCP Tools:interact with and control the Deluge BitTorrent client. This server enables AI

  • get_running_torrents - Get information about all running torrents

  • add_torrent_magnet - Add new torrents via magnet URLs## Featuresagents to manage torrents through a standardized interface.

• 🔄 Async Operations - Non-blocking deluge-console commands

• 🌐 HTTP Transport - Remote access via Server-Sent Events (SSE)

• 🔧 System Service - Auto-starting systemd daemon

• 📊 Comprehensive Logging - All logs available via journalctl- Get Running Torrents: List all active torrents with detailed information## Features

Requirements- Add Torrent via Magnet: Add new torrents using magnet URLs

• OS: Ubuntu/Debian Linux- Async Operations: All commands run asynchronously via subprocess- Get Running Torrents: Query information about all active torrents

• Python: 3.12+

• Deluge: deluge-console must be installed- HTTP Streamable Transport: Supports both stdio and SSE (Server-Sent Events)- Add Torrents: Add new torrents using magnet URLs

• Permissions: sudo access for service installation

• CLI Management: Easy installation and management via command-line interface- Async Operations: All operations run asynchronously using asyncio

Quick Start

• Systemd Service: Can be installed as a persistent system service (Ubuntu/Debian)- HTTP Streamable Transport: Run as an HTTP server for easy integration

1. Install Deluge Console

sudo apt-get install deluge-console

```- **Root Service**: Runs as systemd service with root privileges for reliability- **Systemd Service**: Install as a persistent system service (Ubuntu)



### 2. Install Deluge MCP

```bash

pip install deluge-mcp## Prerequisites## Prerequisites

3. Install as System Service

deluge-mcp install

```- Deluge BitTorrent client with `deluge-console` installed



The service will be available at `http://localhost:58880/mcp` and will auto-start on boot.- For service installation: - Python 3.10 or higher



## Usage  - Ubuntu/Debian system with systemd- Deluge BitTorrent client with `deluge-console` installed



### Service Management  - Root/sudo access- For service installation: 

```bash

# Install daemon service  - Running deluged service (recommended)  - Ubuntu/Debian system with systemd

deluge-mcp install --verbose

  - Root/sudo access

# Check service status

deluge-mcp status --logs### Install Deluge  - Running deluged service (recommended)



# Uninstall service

deluge-mcp uninstall

```bash### Install Deluge

# View logs

sudo journalctl -u deluge-mcp -f# Ubuntu/Debian

sudo apt-get update```bash

Direct Execution

# Run with stdio transport (for MCP clients)

deluge-mcp runsudo apt-get update



# Run with HTTP transport (for remote access)# Start deluged servicesudo apt-get install deluged deluge-console

deluge-mcp run --transport http --port 8080 --host 0.0.0.0

```sudo systemctl enable deluged



### MCP Client Usagesudo systemctl start deluged# Start deluged service

```python

import asyncio```sudo systemctl enable deluged

from fastmcp import Client

sudo systemctl start deluged

async def demo():

    async with Client("http://localhost:58880/mcp") as client:## Installation```

        # Get running torrents

        torrents = await client.call_tool("get_running_torrents")

        print(torrents)

        ### Development Installation## Installation

        # Add a torrent

        result = await client.call_tool(

            "add_torrent_magnet", 

            {"magnet_url": "magnet:?xt=urn:btih:..."}```bash1. Clone the repository:

        )

        print(result)# Clone the repository```bash



asyncio.run(demo())git clone https://github.com/abi-jey/deluge-mcp.gitgit clone https://github.com/abi-jey/deluge-mcp.git

cd deluge-mcpcd deluge-mcp

Architecture

### Service Configuration

- **Service Location**: `/opt/deluge-mcp/venv` (dedicated Python environment)# Create and activate virtual environment

- **Transport**: HTTP with Server-Sent Events (SSE)

- **Port**: 58880 (configurable)python3 -m venv .venv2. Install dependencies using Poetry:

- **Logging**: systemd journal (`journalctl -u deluge-mcp`)

- **Auto-restart**: Yes, with 10-second delaysource .venv/bin/activate```bash

- **Security**: Hardened with `ProtectSystem`, `ProtectHome`, `NoNewPrivileges`

poetry install

### FastMCP v2 Benefits

- **Clean API**: Simple `@mcp.tool()` decorators# Install in development mode```

- **Automatic Transport**: Handles stdio/HTTP seamlessly

- **Type Safety**: Full Python type hintspip install -e .

- **Error Handling**: Exceptions automatically converted to MCP errors

- **Production Ready**: Built-in security and reliability features```3. Activate the virtual environment:



## CLI Reference```bash



```bash### Production Installation as System Servicepoetry shell

deluge-mcp --help                    # Show help

deluge-mcp --version                 # Show version```

deluge-mcp install [--verbose]      # Install systemd service

deluge-mcp uninstall [--verbose]    # Remove systemd service  To install as a systemd service that survives restarts:

deluge-mcp status [--logs]          # Check service status

deluge-mcp run [OPTIONS]            # Run server directly## Usage



# Run command options:```bash

#   --transport {stdio,http}         # Transport mode (default: stdio)

#   --port INTEGER                   # HTTP port (default: 58880)# Install the package first (in user environment)### Running the MCP Server

#   --host TEXT                      # Bind address (default: 0.0.0.0)

#   --verbose                        # Enable debug loggingpip install .

Run the server directly in HTTP streamable mode:

System Integration

Install as system service (MUST use sudo)

Systemd Service

The installed service includes:sudo deluge-mcp install```bash

• Dependencies: Waits for network and deluge daemon

• Logging: All output captured in systemd journal```deluge-mcp run

• Security: Minimal privileges with filesystem protection

• Reliability: Auto-restart on failures```

• Root Access: Required for system-wide torrent management

What the installation does:

Network Access

• Local: http://localhost:58880/mcp1. Verifies root privileges and Ubuntu/Debian systemOr with a custom port:

• Remote: http://YOUR_IP:58880/mcp (if firewall allows)

• Protocols: HTTP with SSE, stdio for local clients2. Checks for deluge-console availability

Troubleshooting3. Creates a dedicated virtual environment at `/opt/deluge-mcp/venv````bash

Service Issues4. Installs deluge-mcp and all dependencies in the service venvdeluge-mcp run --port 8080

# Check service status5. Creates log directory at `/var/log/deluge-mcp````

sudo systemctl status deluge-mcp

6. Creates systemd service file configured for:

# View recent logs

sudo journalctl -u deluge-mcp -n 50   - Running as rootThe server will start and listen for MCP connections over HTTP.



# Follow logs in real-time   - Using the dedicated venv

sudo journalctl -u deluge-mcp -f

   - SSE transport on port 58880### Available MCP Tools

# Restart service

sudo systemctl restart deluge-mcp   - Comprehensive logging to files and systemd journal

• Auto-restart on failureOnce the server is running, AI assistants can use the following tools:

Common Problems

7. Enables and starts the service

Service fails to start:

• Ensure deluge-console is installed: which deluge-console#### 1. get_running_torrents

• Check Python version: python3 --version (needs 3.12+)

• Verify installation: deluge-mcp status --verbose## Usage

Permission denied:Get information about all torrents currently in Deluge.

• Service runs as root for system access

• Installation requires sudo for system directories### Running the Server

• Use deluge-mcp install (not sudo deluge-mcp install)

Returns: Detailed information including torrent names, states, progress,

Port conflicts:

• Default port 58880 may be in use#### Stdio Mode (default)download/upload speeds, seeds, peers, and ETA.

• Change with: deluge-mcp run --port 8080

• Service port configured in systemd file```bash

Developmentpython -m deluge_mcp.mainExample output:

Local Development```

git clone https://github.com/abi-jey/deluge-mcp# Or using the CLIName: Ubuntu 22.04 LTS

cd deluge-mcp

pip install -e .deluge-mcp runID: abc123...

deluge-mcp run --verbose

``````State: Downloading



### Testing ToolsDown Speed: 5.2 MB/s

```bash

# Test individual tools#### HTTP Streamable Mode (SSE)Up Speed: 1.1 MB/s

fastmcp run src/deluge_mcp/main.py:mcp --transport http --port 8080

```bashProgress: 45.3%

# Verify MCP compatibility

fastmcp validate src/deluge_mcp/main.py:mcp# Development with default port (58880)Seeds: 124 (200)

python -m deluge_mcp.main --transport sse --port 58880Peers: 45 (100)

License

ETA: 00:15:23

MIT License - see LICENSE file for details.

Or using the CLI```

Contributing

deluge-mcp run --transport sse --port 58880

1. Fork the repository

2. Create a feature branch#### 2. add_torrent_magnet

3. Make your changes

4. Add tests if applicable # Custom port

5. Submit a pull request

deluge-mcp run --transport sse --port 8080Add a new torrent to Deluge using a magnet URL.

Links

- **Repository**: https://github.com/abi-jey/deluge-mcp

- **FastMCP Framework**: https://gofastmcp.com/**Parameters**:

- **Model Context Protocol**: https://modelcontextprotocol.io/

- **Deluge BitTorrent Client**: https://deluge-torrent.org/### Managing the Service- `magnet_url` (string): The magnet URL starting with "magnet:"



```bash**Returns**: Confirmation message with the result of the operation.

# Start the service

sudo systemctl start deluge-mcp**Example**:

```python

# Stop the serviceadd_torrent_magnet("magnet:?xt=urn:btih:...")

sudo systemctl stop deluge-mcp# Returns: "Torrent added successfully. Output: ..."

Check service status

sudo systemctl status deluge-mcp### CLI Commands

Restart the serviceThe deluge-mcp command provides several subcommands for managing the server:

sudo systemctl restart deluge-mcp

Install as Daemon Service

Disable auto-start on boot

sudo systemctl disable deluge-mcpInstall deluge-mcp as a systemd service that starts automatically on boot:

Enable auto-start on boot```bash

sudo systemctl enable deluge-mcpdeluge-mcp install

### Viewing LogsOptions:

- `--port`, `-p`: Specify the HTTP server port (default: 8080)

The service provides multiple logging options:- `--force`, `-f`: Force installation on non-Ubuntu systems



```bash**System Requirements Check**:

# Application logs (stdout)- Verifies the system is running Ubuntu

sudo tail -f /var/log/deluge-mcp/deluge-mcp.log- Checks that `deluge-console` is installed and accessible

- Creates a systemd service file

# Error logs (stderr)- Enables and starts the service

sudo tail -f /var/log/deluge-mcp/deluge-mcp-error.log

**Example**:

# Systemd journal```bash

sudo journalctl -u deluge-mcp -f# Install with default settings

deluge-mcp install

# All logs since last boot

sudo journalctl -u deluge-mcp -b# Install on custom port

deluge-mcp install --port 9090

# Last 100 lines

sudo journalctl -u deluge-mcp -n 100# Force install on non-Ubuntu system (not recommended)

```deluge-mcp install --force

```

## Available Tools

#### Check Service Status

### 1. `get_running_torrents`

Check if the daemon service is running:

Get information about all torrents currently running in Deluge.

```bash

**No parameters required.**deluge-mcp status

```

**Returns**: Detailed information including:

- Torrent namesThis shows whether the service is active and displays detailed status information.

- States (downloading, seeding, paused, etc.)

- Download/upload speeds#### Uninstall Daemon Service

- Progress percentage

- Seeds and peersRemove the systemd service:

- ETA (estimated time remaining)

```bash

**Example output**:deluge-mcp uninstall

Name: Ubuntu 22.04 LTS Desktop

ID: abc123def456...This will:

State: Downloading- Stop the running service

Down Speed: 5.2 MB/s- Disable automatic startup

Up Speed: 1.1 MB/s- Remove the service file

Progress: 45.3%- Reload systemd configuration

Seeds: 124 (200)

Peers: 45 (100)#### Managing the Service

ETA: 00:15:23

Size: 3.6 GB / 8.0 GBAfter installation, you can manage the service using standard systemd commands:

Ratio: 0.25

# Check status

### 2. `add_torrent_magnet`sudo systemctl status deluge-mcp



Add a new torrent to Deluge using a magnet URL.# Stop the service

sudo systemctl stop deluge-mcp

**Parameters**:

- `magnet_url` (string, required): The magnet URL starting with "magnet:"# Start the service

sudo systemctl start deluge-mcp

**Returns**: Confirmation message with the result of the operation.

# Restart the service

**Example**:sudo systemctl restart deluge-mcp

```

Tool: add_torrent_magnet# View logs

Input: {sudo journalctl -u deluge-mcp -f

  "magnet_url": "magnet:?xt=urn:btih:..."```

}

Output: "Torrent added successfully!## Architecture



Output: Torrent added to download list."### Async Subprocess Execution

```

All Deluge operations run asynchronously using Python's `asyncio` module:

## Architecture

```python

### Componentsasync def run_deluge_command(command: str) -> str:

    process = await asyncio.create_subprocess_shell(

1. **MCP Server (`main.py`)**:         f'deluge-console "{command}"',

   - Handles MCP protocol communication        stdout=asyncio.subprocess.PIPE,

   - Supports stdio and SSE transports        stderr=asyncio.subprocess.PIPE,

   - Registers and executes tools    )

   - Comprehensive logging for debugging    stdout, stderr = await process.communicate()

    # ...

2. **Deluge Integration**:```

   - Uses `deluge-console` command-line interface

   - Runs commands asynchronously via `asyncio.create_subprocess_exec`This ensures the MCP server remains responsive even during long-running operations.

   - Parses command output and returns structured data

   - Example commands:### Transport Mode

     - Get torrents: `deluge-console "info"`

     - Add magnet: `deluge-console "add <magnet_url>"`The server uses FastMCP's HTTP streamable transport:



3. **CLI (`cli.py`)**:```python

   - Built with Typer frameworkapp.run(transport="streamable-http")

   - Handles service installation with full venv setup```

   - Validates system requirements (root, Ubuntu, deluge-console)

   - Configures logging and service parametersThis allows AI assistants to connect to the server over HTTP and stream responses 

efficiently.

### Service Architecture

### Command Execution

**Production Service Setup:**

- **Location**: `/opt/deluge-mcp/`The server executes commands by invoking `deluge-console` as a subprocess:

- **Virtual Environment**: `/opt/deluge-mcp/venv/`

- **Logs**: `/var/log/deluge-mcp/`- **Get torrents**: `deluge-console "info"`

  - `deluge-mcp.log`: Standard output- **Add magnet**: `deluge-console "add <magnet_url>"`

  - `deluge-mcp-error.log`: Error output

- **Port**: 58880 (SSE transport)This approach ensures compatibility with existing Deluge installations and 

- **User**: rootdoesn't require direct API integration.

- **Transport**: SSE (Server-Sent Events)

## Development

**Why Root?**

### Project Structure

The service runs as root to:

- Ensure reliable access to Deluge daemon```

- Manage system-wide service dependenciesdeluge-mcp/

- Write to system log directories├── src/

- Survive system restarts with proper permissions│   └── deluge_mcp/

│       ├── main.py          # MCP server and tools

**Security Hardening:**│       └── cli.py           # CLI interface

├── pyproject.toml           # Dependencies and config

The systemd service includes:├── README.md               # This file

- `NoNewPrivileges=true`: Prevents privilege escalation└── LICENSE                 # License information

- `PrivateTmp=true`: Isolated /tmp directory```

- Automatic restart on failure

- Proper working directory isolation### Adding New Tools



### Async Command ExecutionTo add a new MCP tool, define an async function in `main.py` and decorate it 

with `@app.tool()`:

All Deluge operations run asynchronously using Python's `asyncio`:

```python

```python@app.tool()

async def run_deluge_command(command: str) -> dict[str, Any]:async def my_new_tool(param: str) -> str:

    process = await asyncio.create_subprocess_exec(    """

        "deluge-console",    Description of what the tool does.

        command,    

        stdout=asyncio.subprocess.PIPE,    Args:

        stderr=asyncio.subprocess.PIPE,        param: Description of the parameter

    )    

    stdout, stderr = await process.communicate()    Returns:

    # Process results...        Description of the return value

```    """

    output = await run_deluge_command(f"some-command {param}")

This ensures the MCP server remains responsive during long-running operations.    return output

```

## Troubleshooting

### Running Tests

### Service Not Starting

```bash

1. Check service status:poetry run pytest

```bash```

sudo systemctl status deluge-mcp

```## Security Considerations



2. View recent logs:- The daemon service runs with user-level permissions (not root)

```bash- `deluge-console` commands are executed through subprocess with proper escaping

# Check application logs- Magnet URLs are validated before processing

sudo tail -n 100 /var/log/deluge-mcp/deluge-mcp.log- Service installation requires sudo privileges only for systemd operations



# Check error logs## Troubleshooting

sudo tail -n 100 /var/log/deluge-mcp/deluge-mcp-error.log

### deluge-console not found

# Check systemd journal

sudo journalctl -u deluge-mcp -n 100Ensure Deluge is installed:

``````bash

sudo apt-get install deluge-console

3. Verify deluge-console is accessible:which deluge-console  # Should return a path

```bash```

which deluge-console

deluge-console info### Permission errors during daemon installation

```

The installation requires sudo access to create systemd service files. Make sure 

4. Test the service venv:your user has sudo privileges.

```bash

sudo /opt/deluge-mcp/venv/bin/python -c "import deluge_mcp; print('OK')"### Service fails to start

```

Check the service logs:

### Installation Issues```bash

sudo journalctl -u deluge-mcp -n 50

**"Must be run as root" error:**```

```bash

# Use sudoCommon issues:

sudo deluge-mcp install- Deluge daemon not running

```- Python environment not properly configured

- Port conflicts

**"deluge-console not found" error:**

```bash### Ubuntu check fails

# Install deluge

sudo apt-get updateThe daemon installation is designed for Ubuntu systems with systemd. If you're 

sudo apt-get install deluge-consoleon a different Linux distribution, you can use `--force` flag, but you may need 

to manually adapt the service configuration.

# Verify installation

which deluge-console## Contributing

```

Contributions are welcome! Please feel free to submit a Pull Request.

**"Not supported on this system" error:**

- Only Ubuntu/Debian systems are supported## License

- Check your OS: `cat /etc/os-release`

See the [LICENSE](LICENSE) file for details.

### Permission Issues

## Authors

The service runs as root, but if you have permission issues:

- abi_jey (git@public.abja.dev)

```bash

# Verify service venv ownership## Links

sudo ls -la /opt/deluge-mcp/

- [Model Context Protocol](https://modelcontextprotocol.io/)

# Verify log directory ownership- [FastMCP](https://github.com/jlowin/fastmcp)

sudo ls -la /var/log/deluge-mcp/- [Deluge BitTorrent Client](https://deluge-torrent.org/)

- [Typer CLI Framework](https://typer.tiangolo.com/)

# Recreate if neededMCP server to automate deluge

sudo rm -rf /opt/deluge-mcp /var/log/deluge-mcp
sudo deluge-mcp install
```

### Connection Issues

Make sure Deluge daemon is running:
```bash
# Check if deluged is running
ps aux | grep deluged
sudo systemctl status deluged

# Start deluged if needed
sudo systemctl start deluged

# Enable auto-start
sudo systemctl enable deluged
```

### Port Conflicts

If port 58880 is already in use:

```bash
# Check what's using the port
sudo lsof -i :58880
sudo netstat -tulpn | grep 58880

# Edit service file to use different port
sudo nano /etc/systemd/system/deluge-mcp.service
# Change: --port 58880 to your desired port

# Reload and restart
sudo systemctl daemon-reload
sudo systemctl restart deluge-mcp
```

### Debug Logging

To enable DEBUG level logging:

1. Edit the source files to change logging level:
```python
# In main.py or cli.py
logging.basicConfig(level=logging.DEBUG, ...)
```

2. Reinstall the service:
```bash
sudo deluge-mcp uninstall
sudo deluge-mcp install
```

3. Or modify the systemd service temporarily:
```bash
sudo systemctl edit deluge-mcp
# Add: Environment="PYTHONUNBUFFERED=1"
sudo systemctl restart deluge-mcp
```

## Configuration

### Service Configuration

Key configuration values are defined in `cli.py`:
```python
SERVICE_PORT = 58880          # Default port for SSE transport
SERVICE_VENV_PATH = Path("/opt/deluge-mcp/venv")  # Service venv
SERVICE_LOG_PATH = Path("/var/log/deluge-mcp")     # Log directory
```

To change these, edit `src/deluge_mcp/cli.py` before installation.

### Deluge Configuration

The server uses default deluge-console behavior. Configure Deluge connection:

**System-wide (for root service):**
```bash
# Configuration file
/var/lib/deluged/.config/deluge/console.conf
```

**User-specific (for development):**
```bash
# Configuration file
~/.config/deluge/console.conf
```

### Transport Modes

**Stdio (Standard Input/Output):**
- Default mode
- Suitable for local testing
- Direct communication via stdin/stdout

**SSE (Server-Sent Events):**
- HTTP-based communication
- Runs on port 58880 by default
- Suitable for production deployment
- Allows remote MCP client connections

## Development

### Project Structure

```
deluge-mcp/
├── src/
│   └── deluge_mcp/
│       ├── __init__.py
│       ├── main.py          # MCP server and tools
│       └── cli.py           # CLI interface
├── pyproject.toml           # Dependencies and config
├── README.md               # This file
└── LICENSE                 # License information
```

### Adding New Tools

To add a new MCP tool:

1. Add the tool to the `list_tools()` function:
```python
Tool(
    name="my_new_tool",
    description="Description of what the tool does",
    inputSchema={
        "type": "object",
        "properties": {
            "param": {
                "type": "string",
                "description": "Parameter description",
            }
        },
        "required": ["param"],
    },
)
```

2. Handle the tool in `call_tool()`:
```python
elif name == "my_new_tool":
    param = arguments.get("param", "")
    result = await run_deluge_command(f"some-command {param}")
    # Return TextContent with result
```

### Testing Locally

```bash
# Activate venv
source .venv/bin/activate

# Run in stdio mode for testing
python -m deluge_mcp.main

# Or run in SSE mode
python -m deluge_mcp.main --transport sse --port 58880

# Test with curl
curl http://localhost:58880/sse
```

## Uninstalling

To completely remove the service:

```bash
# Uninstall the service (requires sudo)
sudo deluge-mcp uninstall

# Optionally remove venv and logs
sudo rm -rf /opt/deluge-mcp /var/log/deluge-mcp
```

## Contributing

Contributions are welcome! Please:
1. Fork the repository
2. Create a feature branch
3. Make your changes
4. Submit a pull request

## License

See the [LICENSE](LICENSE) file for details.

## Authors

- abi_jey (git@public.abja.dev)

## Links

- [Model Context Protocol](https://modelcontextprotocol.io/)
- [MCP Python SDK](https://github.com/modelcontextprotocol/python-sdk)
- [Deluge BitTorrent Client](https://deluge-torrent.org/)
- [Typer CLI Framework](https://typer.tiangolo.com/)
- [Repository](https://github.com/abi-jey/deluge-mcp)