hermes-hyprland-plugin (v3.0 - Zero Mouse Stealing Edition)

Warning

Experimental & Under Active Development This compositor plugin and setup are under active, experimental development and are not a final-grade production product. Due to the rapid evolution of Wayland, Hyprland APIs, and D-Bus/AT-SPI protocols, some components or features may occasionally break, fail to target properly, or require manual adjustments on different hardware and software configurations. Use with caution in production workflows.

A high-performance C++ Hyprland compositor plugin that exposes window geometries, active focus states, and direct cursor warps via a Unix domain socket /tmp/hermes-hyprland.sock.

When paired with our Python Coordinate Fusion Engine, it maps absolute screen targets for client-side applications (like Chrome, Zen Browser, Thunar, etc.) by combining compositor-level window coordinates with D-Bus AT-SPI accessibility trees.

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Architectural Breakthrough: Coordinate Fusion

Modern Wayland client applications (GTK, Qt, Electron, Chromium) are mathematically sandboxed—they do not know their absolute position on the physical screen for security reasons. As a result, accessibility frameworks (AT-SPI) report element coordinates relative to the window frame origin $(0, 0)$.

To bypass this Wayland limitation and achieve absolute pixel-perfect desktop automation, this system implements Coordinate Fusion:

$$\text{Absolute Target } X = X_{\text{Window}} + X_{\text{Element}}$$ $$\text{Absolute Target } Y = Y_{\text{Window}} + Y_{\text{Element}}$$

By combining the compositor's window origin (ground truth) with relative D-Bus element boundaries, we resolve target coordinates in less than 1 millisecond with 100% targeting precision, entirely bypassing slow, vision-based coordinate guessing.

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IPC Socket API (/tmp/hermes-hyprland.sock)

Communicate with the plugin by sending JSON payloads over the active Unix Domain Socket.

Action	Parameters	Returns	Description
ping	None	{ "success": true, "message": "..." }	Health check verifying the socket is responsive.
get_windows	None	{ "success": true, "windows": [...] }	Enumerates mapped window classes, titles, addresses, geometries, and focus states.
get_cursor	None	{ "success": true, "cursor": { "x", "y" } }	Retrieves the real-time mouse coordinate.
get_active	None	{ "success": true, "class", "title", "x", "y", "width", "height" }	Returns properties of the currently focused window.
get_clickable_regions	class (optional)	{ "success": true, "windows": [...] }	Retrieves compositor-level subsurfaces and active input regions.
move_cursor	x, y	{ "success": true, "x", "y" }	Warps the mouse pointer directly to absolute screen coordinate (x, y).
focus_window	class or title	{ "success": true, "focused": "..." }	Focuses the matching window via the compositor focus state manager.

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Installation & Build (Arch Linux)

1. Install Dependencies

sudo pacman -S hyprland nlohmann-json libdrm pixman cmake

2. Compile the C++ Plugin

cmake -B build -DCMAKE_BUILD_TYPE=Release
cmake --build build

This produces build/hermes-hyprland.so (size ~220KB).

3. Load the Plugin into the Active Session

hyprctl plugin load ./build/hermes-hyprland.so

4. Configure Autostart at Boot

Add the following line to ~/.config/hypr/hyprland.conf:

plugin = /home/captain/hermes-hyprland-plugin/build/hermes-hyprland.so

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The Python Fusion Module (hermes_hyprland_fusion.py)

Our repository contains a standalone coordinate fusion client. It maps active compositor layouts to local D-Bus elements.

Verification Run

Verify the socket, D-Bus bridges, and live calculations with:

chmod +x hermes_hyprland_fusion.py
./hermes_hyprland_fusion.py

Script Usage Snippet

from hermes_hyprland_fusion import CoordinateFusionEngine

# Initialize the engine
engine = CoordinateFusionEngine()

# Get all accessible UI elements with absolute coordinates fused!
elements = engine.get_clickable_elements(target_app_class="thunar")
for el in elements[:5]:
    cx, cy = el.center()
    print(f"Index #{el.index}: {el.role} '{el.label}' at absolute screen position: X={cx}, Y={cy}")

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Native Hermes Agent Integration

The coordinate fusion engine is fully integrated inside the Hermes Agent at /home/captain/.hermes/hermes-agent/tools/computer_use/:

1. hyprland_backend.py: Adapts coordinates, screenshotting (via grim), SOM bubble overlays (via Pillow), and input injection (via ydotool) into the ComputerUseBackend standard.
2. tool.py: Mounts the Hyprland driver switch block and configures OS validation.

Launching the Agent

To start Hermes with absolute, visionless coordinate targeting enabled:

export HERMES_COMPUTER_USE_BACKEND=hyprland
python3 cli.py

This allows the agent to navigate folders, click menus, type text, and scroll in under 5 milliseconds per action with absolute accuracy.

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License

This project is licensed under the MIT License. Developed by xCaptaiN09.