virtualization-mcp: Instructions file for Claude Code

CLAUDE.md

virtualization-mcp CLAUDE.md is an instructions file for Claude Code from sandraschi/virtualization-mcp. It costs 293 tokens per session, scanned A, a copy of virtualization-mcp AGENTS.md, MIT.

Project instructions for a tool that manages VirtualBox and Hyper-V virtual machines, Windows Sandbox environments, snapshots, and installation tests. It also describes the project’s entry points, dashboard, scripts, and test commands.

In plain words
What is it for?
Use them when developing VM management features, Windows Sandbox scripts, the web dashboard, or fleet installation tests.
Why use it?
They give an AI coding agent the project structure and expected development standards. This makes it easier to modify the right files and verify changes with the repository’s checks.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: mentions Claude Code; mentions AGENTS.md; mentions Codex.

This is sandraschi/virtualization-mcp's own configuration. It tells Claude Code how to work on virtualization-mcp itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything virtualization-mcp configures →

Reuse

Borrowing it

Nothing to install: this file belongs to sandraschi/virtualization-mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/sandraschi/virtualization-mcp/master/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/sandraschi/virtualization-mcp

Made for: Claude Code.

Wrote 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.

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README.md
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Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

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Your own site · 80×15
<a href="https://agentmods.dev/instructions/sandraschi/virtualization-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/sandraschi/virtualization-mcp/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 293 This file is loaded in full into every session.
When invoked 293 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 86% copy Near-identical to another mod in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00293 $0.00293
Opus 5.5 $0.00117 $0.00117
Sonnet 5.5 $0.00059 $0.00059
Haiku 4.5 $0.00029 $0.00029

Measured 1mo ago against content hash dafd68c6ed3e, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

virtualization-mcp CLAUDE.md 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 1mo 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.

Origin

This is a copy

86% identical to virtualization-mcp AGENTS.md — 11 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

CLAUDE.md · 36 lines

What it actually says

virtualization-mcp — Claude Code Guide

Overview

VirtualBox and Hyper-V VM management, Windows Sandbox bringup, snapshots, and fleet install testing via FastMCP 3.2.

Entry Points

  • uv run virtualization-mcp → virtualization_mcp.all_tools_server:main

Standards

  • FastMCP 3.2+ portmanteau tool pattern — tools use operation enum param
  • Responses: structured dicts with success, message, domain-specific fields
  • Dual transport: stdio (Claude Desktop) + HTTP (MCP_TRANSPORT=http)
  • See mcp-central-docs for fleet-wide coding standards

Key Files

  • README.md — user overview
  • INSTALL.md — Options A–D
  • AGENTS.md — Codex agent context
  • scripts/Launch-ConsumerSandbox.ps1 — nearly naked fleet install tests
  • scripts/Launch-DevInfraSandbox.ps1 — dev stack sandbox
  • webapp/ — dashboard (10700/10701)
  • assets/sandbox/ — WSB scripts

Commands

uv run pytest tests/ -q
uv run ruff check .
just serve
just dev
Changes

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.

  1. 1mo ago First seen · 36 lines · 293 tokens per session scan A dafd68c6ed3e

Subscribe to this mod's changes

virtualization-mcp CLAUDE.md is an instructions file published in the GitHub repository sandraschi/virtualization-mcp (17 stars, last pushed today), licensed MIT. It adds 293 tokens to every session, about $0.0012 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 86% identical to virtualization-mcp AGENTS.md, differing in 11 lines, and is treated as a copy.

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