What is windows-mcp CLAUDE.md?

A repository guide for Claude Code, an AI coding assistant, working on the Windows-MCP project. It documents the project, its Python development commands, architecture, and coding conventions.

Use it when asking Claude Code to develop, format, lint, test, or understand the Windows-MCP Python server.

It gives the coding assistant the project context and the correct commands, so its changes and checks fit the repository. It also explains how the code is organised.

How 13888285815/windows-mcp configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to 13888285815/windows-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/13888285815/windows-mcp/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/13888285815/windows-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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/13888285815/windows-mcp/claude-md/github.svg)](https://agentmods.dev/instructions/13888285815/windows-mcp/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/13888285815/windows-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/13888285815/windows-mcp/claude-md/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/instructions/13888285815/windows-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/13888285815/windows-mcp/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 869 This file is loaded in full into every session.

When invoked 869 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 original No closer match found 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	$0.00869	$0.00869
Opus 5	$0.00434	$0.00434
Sonnet 5	$0.00174	$0.00174
Haiku 4.5	$0.00087	$0.00087

Measured 8d ago against content hash 208cdea761f4, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

windows-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 8d 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.

CLAUDE.md · 61 lines

How it starts

The opening of the file, as written. The whole thing — 61 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

Project Overview

Windows-MCP is a Python MCP (Model Context Protocol) server that bridges AI LLM agents with the Windows OS, enabling direct desktop automation. It exposes 16 tools (App, Shell, Screenshot, Snapshot, Click, Type, Scroll, Move, Shortcut, Wait, Scrape, MultiSelect, MultiEdit, Clipboard, Process, Notification) via FastMCP.

Build & Development Commands

uv sync                    # Install dependencies
uv run windows-mcp         # Run the MCP server
ruff format .              # Format code
ruff check .               # Lint code
ruff check --fix .         # Lint and auto-fix
pytest                     # Run all tests (if tests/ exists)
pytest tests/test_foo.py   # Run a single test file

Package manager: UV (not pip). Python: 3.13+. Build backend: Hatchling.

Architecture

The codebase follows a layered service architecture under src/windows_mcp/:

Entry point — __main__.py: Registers all 15 MCP tools on a FastMCP server instance. Uses an async lifespan to initialize Desktop, WatchDog, and Analytics services. Each tool function delegates to Desktop methods. The @with_analytics decorator wraps tools for telemetry.

Desktop service — desktop/service.py: High-level orchestrator. Manages window operations (launch, resize, switch), screenshots, mouse/keyboard actions, and clipboard. Interfaces with Tree service for UI element discovery. desktop/views.py defines data models: DesktopState, Window, Size, BoundingBox, Status.

Tree service — tree/service.py: Captures the Windows accessibility tree from active and background windows. Identifies interactive elements and scrollable areas. Uses ThreadPoolExecutor for multi-threaded UI traversal. tree/views.py defines TreeElementNode, ScrollElementNode, TreeState. tree/config.py has control type configurations.

UIAutomation wrapper — uia/: Low-level abstraction over the Windows UIAutomation COM API via comtypes. core.py wraps the main automation object, controls.py has control-specific logic, patterns.py wraps UIAutomation patterns, enums.py has COM enumerations, events.py handles event subscriptions.

Read the full file on GitHub · 61 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.

8d ago First seen · 61 lines · 869 tokens per session scan A 208cdea761f4

Subscribe to this mod's changes

windows-mcp CLAUDE.md is an instructions file published in the GitHub repository 13888285815/windows-mcp (0 stars, last pushed 5mo ago), licensed MIT. It adds 869 tokens to every session, about $0.0043 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 2026-08-31.

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windows-mcp: Instructions file for Claude Code