Open, edit, and run System Modeler graphs directly in Visual Studio Code (or Cursor). Graphs are stored as .graph.json files in your package folder.
Before you start, confirm that:
In the Explorer panel, click any .graph.json file in your package folder.
System Modeler opens inside the IDE and shows the graph canvas. A connection status message appears in the status bar at the bottom of the screen.

Editing works the same as in the System Modeler add-in: add nodes from the Library, connect ports with wires, and configure node properties in the Details panel.
Press Ctrl+S (Windows) / Command+S (macOS) to save. The file is saved to the package folder on disk.
With a graph open, click Save and run the graph on the toolbar, or press Ctrl+R (Windows) / Command+R (macOS).
The graph runs against the active Fusion document. Results appear in the Diagnostics tab and, for Log nodes, in the Fusion console.
Create new graphs through the System Modeler canvas, not by creating files manually in the Explorer. See Create a new graph for steps. The new .graph.json file appears in your package folder automatically.