A set of global development rules for a workspace that includes Unity, React, FastMCP, Blender, and other integrations. It emphasizes factual reasoning, explicit unfinished behavior, error handling, and detailed logging.

Use it to guide architecture and implementation decisions, enforce explicit errors and unfinished states, and shape logging and exception handling in supported projects.

It sets consistent expectations for code quality and behavior across several projects and tools. It also discourages silent failures, placeholders, and unhandled errors.

architect — Cursor rule for Cursor by sandraschi/virtualization-mcp

Install

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.

Clone the repo

git clone --depth 1 https://github.com/sandraschi/virtualization-mcp

Made for: Cursor.

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.

README.md

[![agentmods](https://agentmods.dev/badge/rules/sandraschi/virtualization-mcp/architect/github.svg)](https://agentmods.dev/rules/sandraschi/virtualization-mcp/architect)

Your own site

<a href="https://agentmods.dev/rules/sandraschi/virtualization-mcp/architect"><img src="https://agentmods.dev/badge/rules/sandraschi/virtualization-mcp/architect/github.svg" alt="Measured on agentmods" height="20"></a>

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.

Your own site · 80×15

<a href="https://agentmods.dev/rules/sandraschi/virtualization-mcp/architect"><img src="https://agentmods.dev/badge/rules/sandraschi/virtualization-mcp/architect.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 1,196 This file is loaded in full into every session.

When invoked 1,196 The same file — it is already loaded in full.

Security scan C 1 finding. A grade says what 26 rules found in the file — not that it is safe.

Origin 94% 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.

Model	Per session	Once invoked
Fable 5.1	$0.01196	$0.01196
Opus 5.5	$0.00478	$0.00478
Sonnet 5.5	$0.00239	$0.00239
Haiku 4.5	$0.00120	$0.00120

Measured 1mo ago against content hash c8c62620c5e4, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade C, and why

architect scanned grade C with 1 finding 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.

Recursive force deletehighDestructive command

rm -rf with a variable or a broad path is one typo away from removing the wrong tree.

- **FORBIDDEN**: `&&`, `||`, `mkdir -p`, `rm -rf`, `cp -r`.

Origin

This is a copy

94% identical to architect — 1 line 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.

.cursor/rules/architect.mdc · 65 lines

How it starts

The opening of the file, as written. The whole thing — 65 lines — stays where its author put it; the contents beside it link to each section on GitHub.

🛠️ System Context & Environment

Root Directory: D:/dev/repos
Owner/GitHub: sandraschi
Hardware: Local RTX 4090 (24GB) + 64GB RAM | OCuLink-optimized.
Inference: DeepSeek-R1-Vibe (32B Reasoning Distill).
Integrations: Unity, Blender, Calibre, Plex, and others. See D:\Dev\repos\mcp-central-docs\integrations\README.md (or mcp-central-docs/integrations/ in workspace).

🧠 Core Partner Mindset (Materialist/Reductionist)

Zero-Inference Rule: Prioritize technical truth over agreement. Challenge sub-optimal logic.
Anti-Gaslight: No mocks, no placeholders. All code must be functional.
Implementation Lifecycle: During early prototype work, temporary placeholders must be explicit. Before release, every placeholder must be either implemented or return explicit not_implemented plus clear UI Under construction labeling.
No Conversation Fluff: No emojis, apologies, or "rah-rah." Be academic and direct.
Slop (LDDO) Prevention: High-density code only. Use early returns and guard clauses.
Disciplined Programming: ZERO uncaught exceptions. Extensive try-except/try-catch blocks. No silent failures.
Extensive Logging: Use proper logger modules. NO naked print() or Console.Log() statements.

🔌 FastMCP 2.14.4 Engineering (Backend)

Framework: Use FastMCP 2.14.4 and Python 3.13+.
Pattern: Leverage @mcp.tool() for side effects and @mcp.resource() for data loading.
Context Usage: Mandatory ctx: Context parameter to utilize ctx.info() and ctx.report_progress().
Dialogic returns: Tool responses must be conversational (dialogic); support sampling and AI/agentic workflows per FastMCP 2.14+.
Packaging: Create .mcpb packages in the dist/ folder. All bundles must be dependency-free, containing extensive prompt templates and valid manifest.json examples.
Deployment: Design for "Local-First" compatibility with the sandraschi GitHub hub.

🎨 React & Tailwind Standards (Frontend)

Architecture: Functional components with TypeScript interfaces. Avoid Enums; use Const Objects/Maps.
Styling: Tailwind CSS ONLY. Use cn() utility for conditional classes. No inline CSS.
Mobile-First: Responsive by default using sm:, md:, lg: breakpoints.
Hooks: Logic must be encapsulated in custom hooks; keep UI components "Beautiful and Dumb."

Read the full file on GitHub · 65 lines

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.

1mo ago First seen · 65 lines · 1,196 tokens per session scan C c8c62620c5e4

Subscribe to this mod's changes

architect is a cursor rule published in the GitHub repository sandraschi/virtualization-mcp (16 stars, last pushed 2d ago), licensed MIT. It adds 1,196 tokens to every session, about $0.0048 per session on Opus 5.5. A static security scan graded it C with 1 finding (recursive force delete). It is 94% identical to architect, differing in 1 line, and is treated as a copy.

hyper-v mcp-server sandbox virtual-box virtualization webapp

architect

Getting it into your agent

Wrote this? Show the measurements

What it costs to keep this loaded

Grade C, and why

Recursive force deletehighDestructive command

This is a copy

How it starts

🛠️ System Context & Environment

🧠 Core Partner Mindset (Materialist/Reductionist)

🔌 FastMCP 2.14.4 Engineering (Backend)

🎨 React & Tailwind Standards (Frontend)

What this file has done since we first saw it

Other cursor rules, from other repositories

architect

architect

architect

about-codebase

runwhen-infrastructure

validate-design-early