Click on "Install Server".
Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state.
In the chat, type @ followed by the MCP server name and your instructions, e.g., "@Qt Pilot Launch myapp.py, click the 'submit_button', and capture a screenshot of the result."
That's it! The server will respond to your query, and you can continue using it as needed.
Here is a step-by-step guide with screenshots.
An MCP server for headless Qt/PySide6 GUI testing. Enables AI assistants like Claude to visually test and interact with Qt desktop applications.
Repository: github.com/neatobandit0/qt-pilot
Launch Qt apps headlessly via Xvfb virtual display
Capture screenshots for visual verification
Simulate interactions: clicks, hovers, keyboard input
Widget discovery by object name
App health monitoring with stderr capture
Full Qt introspection via QTest and Qt APIs
Related MCP server: desk-mcp
git clone https://github.com/neatobandit0/qt-pilot.git ~/.claude/plugins/qt-pilot
pip install -r ~/.claude/plugins/qt-pilot/requirements.txtCopy the plugin to your Claude plugins directory:
cp -r qt-pilot ~/.claude/plugins/Then add to your ~/.claude.json:
{
"mcpServers": {
"qt-pilot": {
"type": "stdio",
"command": "python3",
"args": ["/path/to/qt-pilot/server/main.py"]
}
}
}pip install mcp PySide6Also requires Xvfb for headless display:
# Debian/Ubuntu
sudo apt install xvfb
# RHEL/CentOS/Fedora
sudo yum install xorg-x11-server-Xvfb
# macOS (via Homebrew)
brew install xquartzlaunch_appLaunch a Qt application headlessly.
# Script mode
launch_app(script_path="/path/to/test_gui.py")
# Module mode
launch_app(module="myapp.main", working_dir="/path/to/project")capture_screenshotCapture the current window.
capture_screenshot(output_path="/tmp/screenshot.png")click_widgetClick a widget by its object name.
click_widget(widget_name="submit_button", button="left")hover_widgetHover over a widget.
hover_widget(widget_name="menu_item")type_textType text into a widget or focused widget.
type_text(text="hello world", widget_name="search_input")
type_text(text="hello") # Types into currently focused widgetpress_keySimulate a key press with optional modifiers.
press_key(key="Enter")
press_key(key="S", modifiers=["Ctrl"]) # Ctrl+S
press_key(key="Tab")find_widgetsList widgets matching a name pattern.
find_widgets(name_pattern="*") # All named widgets
find_widgets(name_pattern="btn_*") # Widgets starting with "btn_"get_widget_infoGet detailed widget information.
get_widget_info(widget_name="submit_button")
# Returns: type, visible, enabled, size, position, text, checked state, etc.get_app_statusCheck if the application is still running and get diagnostics.
get_app_status()
# Returns: {"running": true, "exit_code": null, "stderr": "", "display": ":99"}wait_for_idleWait for the Qt event queue to settle after actions.
click_widget(widget_name="load_button")
wait_for_idle(timeout=5.0) # Wait for async operations to complete
capture_screenshot()close_appClose the running application.
close_app()For widget interactions to work, your Qt application must:
Set object names on interactive widgets:
button = QPushButton("Click Me")
button.setObjectName("my_button") # Required for widget discoveryUse QApplication (not QCoreApplication)
Show at least one window
┌─────────────────────────────┐
│ AI Assistant (Claude) │
└─────────────┬───────────────┘
│ MCP Protocol (stdio)
▼
┌─────────────────────────────┐
│ MCP Server (main.py) │
│ - Tool definitions │
│ - Process management │
└─────────────┬───────────────┘
│ Unix Socket (IPC)
▼
┌─────────────────────────────┐
│ Test Harness (harness.py) │
│ - Runs inside Xvfb │
│ - QTest interactions │
│ - Widget introspection │
├─────────────────────────────┤
│ Your Qt Application │
└─────────────────────────────┘# 1. Launch a test app
launch_app(module="myapp.main", working_dir="/path/to/project")
# 2. List available widgets
find_widgets()
# 3. Interact with the UI
click_widget(widget_name="login_button")
wait_for_idle()
# 4. Type into a field
type_text(text="user@example.com", widget_name="email_input")
press_key(key="Tab")
type_text(text="password123", widget_name="password_input")
# 5. Submit and capture result
click_widget(widget_name="submit_button")
wait_for_idle(timeout=3.0)
capture_screenshot(output_path="/tmp/result.png")
# 6. Clean up
close_app()Ensure the widget has setObjectName() called
Use find_widgets() to list available widget names
Call launch_app() first
Check that the script/module path is correct
Use get_app_status() to check for errors
The stderr field contains crash information
Ensure the application creates and shows a window
Use wait_for_idle() after launch for window to render
MIT License - see LICENSE file.
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