SysML v2 Editor for Visual Studio Code

SysML v2 Editor is a lightweight extension developed by Change Vision, Inc., designed for engineers and developers working with SysML v2. It enables fast, syntax-aware model editing, with key productivity features such as real-time validation, symbol navigation, and optional diagram visualization.

Learn more: Visit the official website

Key Features

• Syntax Highlighting
• Syntax Validation
• Quick Navigate to Definition
• Outline View
• Diagram Generation (Optional)

Quick Start

• Enable “SysMLv2 Editor by Change Vision, Inc.”
• Open a folder or ‘.sysml’ file to get started

Free Trial

New users can enjoy a 20-day free trial with access to all features. Note: The trial period is shared with Astah SysML. If you have already used your Astah SysML trial, you won’t be able to use this editor’s trial unless you have a valid license. Need help with your trial? Contact us at sysmlv2@change-vision.com

Licensing

A valid license for Astah SysML is required to use this extension after the trial period ends.

Model Library Support

The SysML v2 Editor includes a built-in model library (sysml.library) that corresponds to the standard library provided by the SysML-v2-Release.

Known Limitation: Initialization Load Time

Upon activation, the extension loads a large set of model library files. This initialization may take just over 10 seconds. During this time, editor support features may be temporarily inactive. Please wait briefly after startup while the extension finishes loading.

Requirements for diagram rendering (Optional)

GraphViz and PlantUML are required for diagram visualization. If these tools are not installed, on-screen instructions will guide you through the setup. Feedback & Support

We value your feedback!

Please submit feature requests or bug reports with as much detail as possible - steps to reproduce, environment details, and screenshots (if applicable) all help us improve. Email: sysmlv2@change-vision.com

Developed by Change Vision, Inc.

Change Vision is the company behind the Astah modeling suite, trusted by thousands of engineers worldwide in embedded, systems, and safety-critical domains.

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