What is mcp-windows-screenshots CLAUDE.md?

A project guide for an MCP server that lets Claude access screenshots stored in Windows folders from WSL2, the Linux environment that runs alongside Windows. It documents the server's commands, build process, and available tools.

Use it to list recent screenshots and their metadata, retrieve a selected screenshot by path or image data, view configured screenshot directories, build the TypeScript source, and run the server locally.

It removes the need to manually find and copy Windows screenshot paths into the assistant. It also gives developers a repeatable way to build, run, and connect the server while testing changes.

How rubinsh/mcp-windows-screenshots configures Claude Code

Reuse

Borrowing it

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

Clone the repo

git clone --depth 1 https://github.com/rubinsh/mcp-windows-screenshots

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/rubinsh/mcp-windows-screenshots/claude-md/github.svg)](https://agentmods.dev/instructions/rubinsh/mcp-windows-screenshots/claude-md)

Your own site

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

Per session 527 This file is loaded in full into every session.

When invoked 527 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	$0.00527	$0.00527
Opus 5	$0.00264	$0.00264
Sonnet 5	$0.00105	$0.00105
Haiku 4.5	$0.00053	$0.00053

Measured 9d ago against content hash c682c51c0d53, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

mcp-windows-screenshots 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 9d 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 · 66 lines

What it actually says

CLAUDE.md

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

Project Overview

This is an MCP (Model Context Protocol) server that enables Claude to access Windows screenshots from WSL2 environments. It's designed to simplify screenshot sharing by eliminating the need for manual file path navigation.

Development Commands

# Install dependencies
npm install

# Build TypeScript to JavaScript
npm run build

# Development mode with auto-rebuild
npm run dev

# Test the server locally
node dist/index.js

MCP Server Architecture

Transport: stdio-based communication
Tools Provided:
- list_screenshots: Lists recent screenshots with metadata
- get_screenshot: Retrieves a specific screenshot (path or base64 content)
- list_directories: Shows all configured screenshot directories
Entry Points:
- cli.js: NPX entry point that spawns the server
- src/index.ts: Main server implementation

Testing the MCP Server

To test changes locally before publishing:

# Build and test with Claude Code
npm run build
claude mcp add windows-screenshots-dev node /path/to/project/dist/index.js

# Remember to remove test server after testing
claude mcp remove windows-screenshots-dev

Publishing to NPM

# Bump version in package.json
npm version patch  # or minor/major

# Publish (build runs automatically via prepublishOnly)
npm publish

# Test the published version
npx mcp-windows-screenshots@latest

Common Development Tasks

Adding new screenshot directories: Modify getScreenshotDirectories() in src/index.ts
Changing file patterns: Update the glob patterns in list_screenshots tool
Adding new MCP tools: Follow the pattern in server.setRequestHandler()
Debugging MCP communication: Errors go to stderr, use console.error() for debugging

Important Notes

This is an MCP server meant to be installed via claude mcp add command
Users install it with: claude mcp add windows-screenshots -- npx mcp-windows-screenshots@latest
Environment variables (WINDOWS_USERNAME, MCP_SCREENSHOT_DIRS) are passed via -e flags during installation
The server runs as a subprocess of Claude Code and communicates via stdio

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.

9d ago First seen · 66 lines · 527 tokens per session scan A c682c51c0d53

Subscribe to this mod's changes

mcp-windows-screenshots CLAUDE.md is an instructions file published in the GitHub repository rubinsh/mcp-windows-screenshots (6 stars, last pushed 1y ago), licensed MIT. It adds 527 tokens to every session, about $0.0026 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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