Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add skills/sandraschi/virtualization-mcp/virtualization-expertnpx skills add sandraschi/virtualization-mcp --skill virtualization-expertgit clone --depth 1 https://github.com/sandraschi/virtualization-mcpWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/sandraschi/virtualization-mcp/virtualization-expert)<a href="https://agentmods.dev/skills/sandraschi/virtualization-mcp/virtualization-expert"><img src="https://agentmods.dev/badge/skills/sandraschi/virtualization-mcp/virtualization-expert.svg" alt="Measured on agentmods" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00021 | $0.00346 |
| Opus 5 | $0.00010 | $0.00173 |
| Sonnet 5 | $0.00004 | $0.00069 |
| Haiku 4.5 | $0.00002 | $0.00035 |
Grade A, and why
virtualization-expert scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
Virtualization expert skill
When helping with virtual machines (VirtualBox, Hyper-V), use the Virtualization MCP server's tools in this order.
1. Discovery and lifecycle
- List VMs: Use the VM lifecycle portmanteau to list all VMs (VirtualBox and Hyper-V when on Windows).
- Details: Get VM info (name, state, memory, CPUs) before starting or changing a VM.
- Start / stop / pause / resume: Use the appropriate lifecycle operations; prefer graceful stop.
- Snapshots: Create snapshots before risky changes; list and restore when needed.
- Clone: Use full or linked clone as appropriate.
Confirm before destructive actions (delete VM, force stop).
2. Storage
- Disks: List virtual disks; create VDI/VMDK/VHD as needed.
- Controllers: Manage IDE, SATA, SCSI, NVMe controllers; attach/detach storage.
- Shared folders: Configure host–guest shared folders when needed.
3. Networking
- Adapters: Configure NAT, Bridged, Host-only, or Internal networking.
- Port forwarding: Set up NAT port forwarding for services.
- Host-only networks: Create or use host-only networks for host–guest communication.
Best practices
- Confirm the target VM or host when multiple exist.
- For production VMs, recommend a snapshot before major changes.
- Point users to the webapp dashboard for live console view and multi-provider management.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 3d ago First seen · 36 lines · 21 tokens per session scan A 07bd0dbba58e
virtualization-expert is a skill published in the GitHub repository sandraschi/virtualization-mcp (14 stars, last pushed 5d ago), licensed MIT. It adds 21 tokens to every session and 346 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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