# EXTRA — Open Source Computer Use AI for Windows (yantraOS)

> EXTRA is a high-speed, token-efficient, open-source Computer Use AI bridge for Windows 10 and 11, created by yantraOS. It acts as an open-source alternative to GPT Astra 6 and closed vision-heavy computer use agents by providing direct Win32 and Model Context Protocol (MCP) desktop automation.

EXTRA enables AI models and agentic workflows (including Claude, OpenAI Codex, Google Antigravity, OpenCode, agy, Cursor, Windsurf, Devin, and Cline) to see, click, type, snap windows, and manipulate the Windows desktop in real-time with sub-3ms latency, zero coordinate drift, and up to 225× lower token costs compared to traditional screenshot-loop computer use.

## Core Capabilities
- **Sub-3ms Frame Capture**: High-speed DXGI GPU desktop streaming replaces sluggish screenshot poll loops.
- **Drift-Free Desktop Actions**: Direct native Win32 message dispatch and COM accessibility trees eliminate OCR misclicks and coordinates drift.
- **Fast-Path Application Automations**: Instant programmatic interaction for Calculator, Notepad, Paint, and File Explorer prevents human-slow character-by-character typing.
- **Standard Model Context Protocol (MCP)**: Native JSON-RPC MCP server with zero closed wrappers, compatible with any MCP client.
- **Local-First & Sovereign**: Runs 100% locally on your machine with zero telemetry and zero external proxy dependencies.

## Real-World Benchmark: Open Source Alternative to GPT Astra 6
In an audited 7-stage Windows 11 adversarial benchmark (live web research, currency normalization, error detection, data analysis, Microsoft Paint visualizations, and window snapping):
- **GPT Astra 6 Ultra (Codex app)**: Failed at Stage 1 due to browser URL verification stalls. Consumed 900,000 tokens costing **~$9.00 USD**. Generated 0 verified deliverables.
- **Gemini 3.8 Flash + EXTRA**: Completed all 7 stages autonomously live on screen in 10m 48s. Consumed only ~8% of standard quota, costing **~$0.04 USD** (a 225× cost reduction). Generated all 5 required files with 100% prompt compliance.

## Quick Installation
Run this one-line command in Windows PowerShell (Run as Administrator):
```powershell
irm https://extra.yantraos.com/install.ps1 | iex
```

## Model Context Protocol (MCP) Configuration
Add EXTRA to your MCP configuration file (`claude_desktop_config.json`, Cursor, Antigravity, or Cline):
```json
{
  "mcpServers": {
    "extra": {
      "command": "extra",
      "args": ["serve"]
    }
  }
}
```

## Tool Definitions
- `extra_launch(app_name, args)`: Foreground application launcher with window focus guarantee.
- `extra_click(x, y, button, double_click)`: Sub-pixel coordinate and UI Automation element clicker.
- `extra_type(text, cpm)`: Direct Win32 keyboard input injection.
- `extra_hotkey(keys)`: Windows keyboard shortcuts and window snap commands (`win+left`, `win+right`).
- `extra_screenshot(monitor_index, crop_box)`: Real-time GPU DXGI frame capture.
- `extra_focus_window(window_title)`: Foreground window switching by title substring.
- `extra_inspect_ui(x, y)`: Windows UI Automation accessibility element inspector.

## Documentation & Links
- [Official Website](https://extra.yantraos.com)
- [GitHub Repository](https://github.com/AIYantra/extra)
- [Full LLM Context & Architecture Documentation](https://extra.yantraos.com/llms-full.txt)
- [Audited Task Prompt](https://extra.yantraos.com/benchmark/task_prompt.md)
- [Verified Executive Briefing](https://extra.yantraos.com/benchmark/data/briefing.txt)
- [yantraOS Sovereign Operating System](https://yantraos.com)