windows-automation

name	windows-automation
description	Guidance for semantic-first Windows automation with the bundled windows-mcp server. Use when automating desktop apps, choosing UI Automation vs screenshots, or handling DPI and multi-monitor issues.
domain	windows-automation
confidence	high
source	plugin

Context

This plugin bundles the Windows MCP Server for Windows-only desktop automation. The server is strongest when you let Windows expose semantic UI information instead of guessing from screenshots.

Preferred workflow

1. Use window_management to find or activate the target window.
2. Use ui_find, ui_read, ui_click, and ui_type for normal controls.
3. Use file_save for Save / Save As flows instead of sending raw keyboard shortcuts.
4. Only fall back to screenshot_control, mouse_control, or keyboard_control when the UI Automation tree is missing or the target is a custom canvas.

Patterns

Semantic-first automation

• Prefer element names, control types, automation IDs, and window handles over screen coordinates.
• Re-check the UI tree after dialogs, page changes, or tab switches.
• Treat screenshots as discovery or fallback tools, not the primary control surface.

Screenshot fallback

• Use screenshot_control when the app is a game, canvas, OpenGL surface, or other custom-drawn UI.
• If you need coordinates, get them from the annotated screenshot output first.
• Expect coordinate-based automation to be more fragile across DPI, layout, and monitor changes.

Multi-monitor and DPI

• Use monitor-aware tools instead of assuming the primary display.
• Negative coordinates are normal on virtual desktops with monitors positioned left or above the primary display.
• Keep work window-relative when possible to avoid DPI and layout drift.

Browsers and signed-in sessions

• Treat Edge and Chrome page content like any other semantic UI surface: start with window_management, then use ui_find, ui_click, ui_type, and ui_read against visible text or ARIA labels.
• For authenticated or SSO-only sites, reuse an existing signed-in browser window/session first before launching the URL again.
• Do not interpret a Chromium launcher helper exiting immediately as a failed launch until you check whether the existing browser session already opened or focused the target page.
• Keep browser chrome (address bar, tabs, profile menus, extension flyouts) as best-effort; page content is the strong path.

Windows security boundaries

• UAC prompts and elevated windows are on a secure boundary. Non-elevated automation cannot interact with them.
• If a tool reports an elevation mismatch, re-run the MCP server at the same privilege level as the target app.

Anti-patterns

• Do not start with screenshot clicks when a normal desktop app exposes accessible controls.
• Do not save files with raw Ctrl+S if a Save As dialog might appear.
• Do not assume coordinates are stable across machines, themes, or display scaling.