Spec42SysML v2 you can work with

Open, local-first tooling for SysML v2 and KerML — edit with live feedback, understand structure and behavior beyond the source, and keep the same analysis engine in the editor, CI, and assistant workflows.

Get Started

What's Included

✎

Edit with confidence

Live diagnostics, navigation, completion, and formatting for SysML v2 and KerML — across multi-file models and bundled libraries.

◈

See what the model means

Model Explorer, diagram views, and Feature Inspector turn textual SysML into structure, wiring, behavior, and resolved semantics.

✓

Same checks everywhere

One analysis engine for VS Code, CLI, GitHub Actions, and assistant tools — so editor feedback and automation stay aligned.

⧉

Local-first by design

Language server, standard library, and Elan8 domain/method libraries ship with Spec42. Your models stay in your workspace.