mcp-server-qnap-qvs

MCP server for QNAP Virtualization Station (QVS) — manage virtual machines, snapshots, disks, and more on your QNAP NAS via the QVS REST API.

Note: This is not an official QNAP product. The QVS REST API is undocumented — this project is based on reverse-engineering the web UI and the qnap-qvs-sdk-for-go project.

Prerequisites

Before you start, you need:

1. QNAP NAS with an x86 CPU (Intel or AMD with VT-x/AMD-V). ARM models do not support Virtualization Station.

2. Virtualization Station installed from the QNAP App Center.

3. Admin credentials — the username and password you use to log into the QNAP web UI. The server uses these to authenticate with the Virtualization Station API.

4. Network access — the machine running the server needs HTTPS access to your NAS (port 443 by default).

5. Python 3.10+ on the machine running the server.

Optional: QEMU Guest Agent

If you want the server to report VM IP addresses (via get_vm_ips and get_overview), install the QEMU guest agent inside each VM:

# For Ubuntu/Debian VMs:
sudo apt install qemu-guest-agent
sudo systemctl enable --now qemu-guest-agent

Without the guest agent, IP-related tools will return a helpful message explaining what's needed. Everything else works without it.

Related MCP server: vSphere MCP Server

Compatibility

Features

39 tools across 7 categories:

• VM lifecycle — start, shutdown, force-stop, reset, suspend, resume

• VM management — create, update settings (CPU, memory, name, auto-start), delete, clone, export, import

• VM info — details, state, IPs, adapters, graphics/VNC, CD-ROMs, USBs

• Disk & ISO — list disks, resize, delete, mount/unmount ISOs, scan for ISOs, download ISOs from URL

• Snapshots — list, create, revert, delete

• Analysis — resource overview dashboard (host CPU/RAM utilization, per-VM summary with networking), QVS audit logs, shutdown progress

• Safety — all destructive operations require explicit confirm=true

Install

# Via uvx (recommended)
uvx mcp-server-qnap-qvs

# Or via pip
pip install mcp-server-qnap-qvs

# Or via Docker (for remote/NAS deployment)
docker pull ghcr.io/arnstarn/mcp-server-qnap-qvs:latest

How Authentication Works

There are two separate authentication layers:

1. Server ↔ QNAP NAS (required)

The server authenticates to your QNAP's Virtualization Station API using your NAS admin credentials. This happens automatically — you just provide the credentials via environment variables:

Most QNAP devices use self-signed certificates, so QNAP_VERIFY_SSL=false is typical. Set it to true if you've installed a valid certificate.

2. MCP Client ↔ Server (SSE mode only)

When running in SSE mode (remote/Docker), the server requires a Bearer token so only authorized MCP clients can connect:

• If you set MCP_AUTH_TOKEN: use that same value as the Bearer token in your MCP client config.

• If you don't set it: the server generates a random token on startup and prints it to the log. Copy it from there.

• Stdio mode (local, default): no token needed — the MCP client runs the server as a local process.

Configuration

Option A: Local Mode (stdio)

The server runs on your machine. Claude Code spawns it as a subprocess — no network, no token needed.

Claude Code (~/.claude.json):

{
  "mcpServers": {
    "qnap-qvs": {
      "command": "uvx",
      "args": ["mcp-server-qnap-qvs"],
      "env": {
        "QNAP_HOST": "your-nas.local",
        "QNAP_USERNAME": "admin",
        "QNAP_PASSWORD": "your-password",
        "QNAP_VERIFY_SSL": "false"
      }
    }
  }
}

Claude Desktop (claude_desktop_config.json): same format as above.

Option B: Remote Mode (SSE)

The server runs on the NAS (or any Docker host) and MCP clients connect over the network.

Start the server:

# Via Docker (recommended for NAS deployment)
docker run -d \
  -p 8445:8445 \
  -e QNAP_HOST=localhost \
  -e QNAP_USERNAME=admin \
  -e QNAP_PASSWORD=your-password \
  -e QNAP_VERIFY_SSL=false \
  -e MCP_AUTH_TOKEN=your-secret-token \
  ghcr.io/arnstarn/mcp-server-qnap-qvs:latest

# Or via Docker Compose
cp .env.example .env  # Edit .env with your credentials
docker-compose up -d

# Or directly with env vars
MCP_TRANSPORT=sse MCP_AUTH_TOKEN=your-secret-token mcp-server-qnap-qvs

When running on the NAS itself, set QNAP_HOST=localhost since the server and the API are on the same machine.

Connect your MCP client:

{
  "mcpServers": {
    "qnap-qvs": {
      "url": "http://your-nas.local:8445/sse",
      "headers": {
        "Authorization": "Bearer your-secret-token"
      },
      "transportType": "sse"
    }
  }
}

Option C: QNAP Container Station

1. Open Container Station on your QNAP NAS

2. Pull ghcr.io/arnstarn/mcp-server-qnap-qvs:latest or import the docker-compose.yml

3. Set environment variables (QNAP_HOST=localhost, QNAP_USERNAME, QNAP_PASSWORD, MCP_AUTH_TOKEN)

4. The server runs on port 8445 — connect from any MCP client on your network

Option D: QPKG (App Center)

Install the QPKG directly on your QNAP NAS. It runs as a Docker container via Container Station.

Step 1: Add the repository

1. Open App Center on your QNAP

2. Click the Settings icon (gear, top-right)

3. Go to App Repository

4. Add this URL:

   https://raw.githubusercontent.com/arnstarn/mcp-server-qnap-qvs/main/qpkg/repo.xml

5. Click Apply

Step 2: Install

1. Search for "MCP QVS Server" in App Center

2. Click Install

3. Wait for the Docker image to download (first install only)

Step 3: Configure credentials

The QPKG creates a .env file with placeholder values. You need to edit it with your actual QNAP credentials.

SSH into your NAS and edit the .env file:

ssh your-username@your-nas.local

# Find the install path
QPKG_DIR=$(getcfg mcp-server-qnap-qvs Install_Path -f /etc/config/qpkg.conf)

# Edit the .env file (use vi, nano, or echo)
cat > "$QPKG_DIR/.env" << 'EOF'
QNAP_HOST=localhost
QNAP_PORT=443
QNAP_USERNAME=your-admin-username
QNAP_PASSWORD=your-admin-password
QNAP_VERIFY_SSL=false
MCP_AUTH_TOKEN=pick-any-secret-string-here
EOF

# Restart the service to pick up the new config
/etc/init.d/mcp-server-qnap-qvs.sh restart

Replace your-admin-username and your-admin-password with the credentials you use to log into the QNAP web UI. The MCP_AUTH_TOKEN is any secret string you choose — you'll use it as the Bearer token in your MCP client config.

Step 4: Connect your MCP client

{
  "mcpServers": {
    "qnap-qvs": {
      "url": "http://your-nas.local:8445/sse",
      "headers": {
        "Authorization": "Bearer pick-any-secret-string-here"
      },
      "transportType": "sse"
    }
  }
}

Use the same MCP_AUTH_TOKEN value you set in Step 3.

Updating: When a new version is released, the App Center will show an update. Or pull the latest Docker image manually:

ssh your-username@your-nas.local
CS_DIR=$(getcfg container-station Install_Path -f /etc/config/qpkg.conf)
${CS_DIR}/bin/docker pull ghcr.io/arnstarn/mcp-server-qnap-qvs:latest
/etc/init.d/mcp-server-qnap-qvs.sh restart

Environment Variables Reference

Available Tools

Read-Only (14 tools)

VM Lifecycle (6 tools)

VM Management (6 tools)

Disks & ISOs (6 tools)

Snapshots (4 tools)

Safety

All destructive operations require confirm=true. Without it, the tool returns a preview of what it would do — no changes are made. This prevents accidental VM deletions, shutdowns, or snapshot reverts.

Troubleshooting

"QEMU guest agent is not installed or not running"

The get_vm_ips tool and the IP section of get_overview require the QEMU guest agent running inside the VM. Install it:

# Ubuntu/Debian
sudo apt install qemu-guest-agent && sudo systemctl enable --now qemu-guest-agent

# CentOS/RHEL
sudo yum install qemu-guest-agent && sudo systemctl enable --now qemu-guest-agent

All other tools work without the guest agent.

"VM is not running"

IP addresses can only be retrieved from running VMs. Start the VM first with start_vm.

Connection refused / timeout

• Verify the NAS is reachable: curl -k https://your-nas.local:443

• Check that Virtualization Station is installed and running in the QNAP App Center

• If using a non-default HTTPS port, set QNAP_PORT accordingly

Login failed

• Verify your credentials work on the QNAP web UI

• The username and password are for the QNAP system admin account (the same one you use to log into QTS/QuTS hero)

Development

git clone https://github.com/arnstarn/mcp-server-qnap-qvs.git
cd mcp-server-qnap-qvs
pip install -e ".[dev]"

# Run tests
pytest

# Lint
ruff check src/ tests/

# Build QPKG (requires Docker)
docker build -t qpkg-builder -f qpkg/Dockerfile.builder .
docker run --rm -v "$(pwd)/qpkg:/work" qpkg-builder

API Reference

The QVS REST API is not officially documented. This project's API knowledge comes from:

• tmeckel/qnap-qvs-sdk-for-go — Go SDK auto-generated from QNAP's internal OpenAPI specs

• QTS HTTP API Authentication v5.1.0 — Official QNAP auth docs

• Browser DevTools inspection of the Virtualization Station web UI

License

MIT