Orbination AI Desktop Vision & Control

Give AI assistants eyes and hands. A native Windows MCP server that lets AI see the screen, read UI elements, click buttons, type text, and control any application — with built-in OCR, dark theme support, window occlusion detection, and batch action sequencing.

Built for Claude Code by Leia Enterprise Solutions for the Orbination project.

AI coding assistants are blind. They generate code but can never see the result. They can't compare a design mockup to a running app. They can't click through a UI to test it. This server fixes that.

What It Does

This MCP server bridges the gap between AI and your desktop. Instead of working blind with just text, the AI can:

• See — Take screenshots, run OCR on any window (auto-enhances dark themes), detect window occlusion

• Read — Detect every UI element (buttons, inputs, text, tabs, checkboxes) with exact positions via Windows UIAutomation

• Interact — Click elements by text (UIAutomation + OCR fallback), navigate menus, fill forms, type and paste text

• Navigate — Open apps, switch windows, focus tabs, navigate browser URLs

• Understand — Scan the entire desktop: window visibility %, occlusion detection, uncovered desktop regions

• Batch — Execute multi-step UI workflows in a single call with run_sequence

What's New in v2.0

• Window Occlusion Detection — Grid-based analysis showing which windows are truly visible (visibility %) and which are hidden behind others

• Desktop Region Detection — Flood-fill algorithm to find uncovered screen areas

• Shared OcrService — Centralized OCR with automatic dark theme enhancement (invert + contrast boost) — single-pass, not two

• PrintWindow API — Capture window content even when obscured by other windows

• click_element — UIAutomation first, then OCR for dark themes, web apps, iframes

• run_sequence — Batch multiple UI actions (click, type, paste, hotkey, wait, focus, OCR click) in a single MCP call

• click_menu_item — Navigate parent > child menus with smooth mouse movement to keep submenus open

• DPI Awareness — Per-monitor DPI for correct coordinates on multi-monitor setups with mixed scaling

• Embedded AI Instructions — Server sends tool usage guidelines on MCP connection, teaching AI to prefer OCR over screenshots

Architecture

AI Client (Claude Code / Claude Desktop)
         │
         │  MCP / stdio
         ▼
    ┌─────────────────────────────┐
    │       MCP Server            │
    │   (ServerInstructions)      │
    └─────────┬───────────────────┘
              │
    ┌─────────┼──────────────────────────────────────┐
    │         │         │          │          │       │
    ▼         ▼         ▼          ▼          ▼       │
 Mouse    Keyboard   Screen    Vision    Composite   │
 Tools     Tools     Tools     Tools      Tools      │
                       │          │          │       │
              ┌────────┼──────────┼──────────┘       │
              ▼        ▼          ▼                  │
          Win32     UIAuto-    OcrService            │
          Native    mation     (dark theme)          │
              │        │                             │
              ▼        ▼                             │
         DesktopScanner    NativeInput               │
         (occlusion,       (SendInput,               │
          regions)          clipboard)               │
              │               │                      │
              └───────┬───────┘                      │
                      ▼                              │
               Windows OS                            │
               (Desktop, Windows, Apps)              │
    └────────────────────────────────────────────────┘

Single native .NET 8 executable. No Python. No Node.js. No browser drivers. Direct Windows API access.

Requirements

• Windows 10/11

• .NET 8 SDK

Build

cd DesktopControlMcp
dotnet build -c Release

Or publish as a single file:

dotnet publish -c Release -r win-x64 --self-contained false

Setup with Claude Code

Add the MCP server to your Claude Code configuration:

claude mcp add desktop-control -- "C:\path\to\DesktopControlMcp.exe"

Or add it manually to your MCP config file:

{
  "mcpServers": {
    "desktop-control": {
      "command": "C:\\path\\to\\DesktopControlMcp\\bin\\Release\\net8.0-windows\\DesktopControlMcp.exe",
      "args": []
    }
  }
}

Tools (45+)

Vision & Element Detection

Interaction

Batch & Composite Actions

Mouse & Keyboard

Window & App Management

Screenshots & OCR

Utilities

Embedded AI Instructions

The server sends tool usage guidelines automatically on every MCP connection via ServerInstructions. This teaches AI clients the optimal workflow without requiring any configuration files:

Observation Priority: ocr_window > get_window_details > list_windows > scan_desktop > screenshot_to_file

Action Priority: click_element > click_menu_item > run_sequence > paste_text > mouse_click

The key insight: OCR and UIAutomation return exact text and coordinates — the AI knows exactly what to click. Screenshots require vision processing and guessing. OCR-first workflows are faster, cheaper, and more reliable.

Window Occlusion Detection

The server uses a grid-based occlusion analysis (24px cells) to determine which windows are truly visible:

Chrome (chrome) [71] @ -2060,-1461 3456x1403        ← 100% visible
VS Code (Code) [45] @ -1500,-800 1200x900           ← 65% visible
Explorer (explorer) [20] @ -1400,-700 800x600        ← 0% visible [OCCLUDED]

The AI knows which windows it can interact with and which are hidden. Combined with desktop region detection (flood-fill to find uncovered screen areas), the AI has a complete spatial understanding of the desktop.

Dark Theme OCR Enhancement

Many modern apps use dark themes where standard OCR fails. The server automatically detects dark backgrounds and enhances images before OCR:

1. Sample pixel luminance across the image

2. If average luminance < 100 → dark theme detected

3. Invert colors + boost contrast (1.4x) — single pass

4. Run OCR on enhanced image

This works automatically on ocr_window, ocr_screen_region, ocr_find_text, and click_element's OCR fallback.

Multi-Monitor Support

Full multi-monitor support out of the box with per-monitor DPI awareness:

• Auto-detects all monitors — positions, sizes, primary screen via get_screen_info

• Virtual desktop mapping — coordinates span the full virtual desktop, including negative coordinates for left/top monitors

• DPI-aware — correct coordinates on mixed-scaling setups (e.g. 100% on one monitor, 150% on another)

• Cross-monitor screenshots — screenshot_to_file captures all screens, screenshot_region targets any region

• Window-aware — windows on any monitor are detected with correct positions

• Taskbar scanning — reads both Shell_TrayWnd (primary) and Shell_SecondaryTrayWnd (secondary monitors)

How UIAutomation Works

Unlike screenshot-based tools that guess what's on screen, this server reads the actual UI element tree exposed by Windows. Every button, input field, text label, tab, and checkbox is detected with:

• Exact position and size (bounding rectangle)

• Text/label (what the element says)

• Control type (button, input, text, checkbox, etc.)

• Automation ID (developer-assigned identifier)

• Supported patterns (can it be clicked? typed into? toggled?)

UIAutomation + OCR Fallback

click_element combines both strategies. UIAutomation first (fast, structured), OCR fallback (universal):

click_element "Save"
  → UIAutomation: found "Save" button → click via Invoke pattern ✓

click_element "OK"  (dark web dialog)
  → UIAutomation: not found
  → OCR: capture window → enhance dark theme → find "OK" text → click center ✓

Limitation: Custom-Rendered Apps

Applications that render their own UI canvas (Flutter, Electron with custom rendering, game engines) may expose fewer elements to UIAutomation. The OCR fallback handles these cases automatically.

Token-Efficient by Design

Every MCP tool call costs tokens. This server is engineered to minimize token usage:

Structured Data Instead of Screenshots

Most desktop automation tools send full screenshots for every action — each one costs thousands of tokens. This server returns compact structured text:

[button] "Save" @ 450,320
[input] "Search..." @ 200,60
[tab-item] "Settings" @ 120,35

Batch Operations

• run_sequence executes multiple actions in one call (click, type, paste, hotkey, wait, focus)

• fill_form fills multiple form fields in a single call

• scan_desktop returns screens + windows + elements + taskbar in one response

• click_menu_item navigates parent > child menus in one call

Smart Caching

Scan results are cached for 30 seconds. Individual windows can be refreshed with refresh_window instead of a full scan_desktop. The scanner uses UIAutomation's CacheRequest to batch-fetch all properties in a single cross-process call.

Project Structure

DesktopControlMcp/
├── Program.cs                    # MCP server entry + DPI awareness + ServerInstructions
├── NativeInput.cs                # Low-level mouse/keyboard via SendInput
├── Native/
│   └── Win32.cs                  # P/Invoke: EnumWindows, PrintWindow, window management
├── Models/
│   └── SceneData.cs              # Data models: windows (with occlusion), elements, regions
├── Services/
│   ├── DesktopScanner.cs         # Desktop scanning + occlusion analysis + region detection
│   ├── OcrService.cs             # Shared OCR engine with dark theme auto-enhancement
│   └── UiAutomationHelper.cs     # Element interaction patterns
└── Tools/
    ├── VisionTools.cs            # scan, find, click (with OCR fallback), list windows
    ├── CompositeTools.cs         # run_sequence, click_menu_item, navigate, open app
    ├── MouseTools.cs             # Mouse control
    ├── KeyboardTools.cs          # Keyboard control
    └── ScreenTools.cs            # Screenshots, OCR tools, PrintWindow capture

Examples

See the examples/ folder for real-world workflows:

• Visual UI Comparison — AI opens an HTML design and a Flutter app side by side, clicks through both, and identifies every visual difference

• Automated UI Testing — AI tests login flows, form validation, and navigation by clicking through any app — no test scripts needed

• Multi-App Workflows — AI orchestrates across browser, code editor, database tool, and desktop apps in a single workflow

Quick Install

Option A: Download pre-built binary

1. Download from Releases

2. Extract the zip

3. Add to Claude Code:

claude mcp add desktop-control -- "C:\path\to\DesktopControlMcp.exe"

Option B: Build from source

git clone https://github.com/amichail-1/Orbination-AI-Desktop-Vision-Control.git
cd Orbination-AI-Desktop-Vision-Control/DesktopControlMcp
dotnet build -c Release
claude mcp add desktop-control -- "bin\Release\net8.0-windows\DesktopControlMcp.exe"

Contributing

Contributions welcome. Open an issue or submit a PR.

License

MIT