Aletyx Automation Design for VS Code

Design, run, analyze, and improve business decisions without leaving your editor.

Aletyx Automation Design turns Visual Studio Code into a serious DMN workspace. Build decision models visually, work with FEEL confidently, exercise decisions against real inputs, review changes at model level, and use AI to accelerate the work while you remain in control of every edit.

Built for developers who ship decisions

Visual DMN authoring — Create and maintain DRDs, decision tables, boxed expressions, data types, decision services, and included models in a polished graphical editor.
FEEL that feels like code — Get completion, diagnostics, definition navigation, and evaluated values on hover for faster debugging.
Run before you ship — Execute multiple input rows locally, inspect outputs, and pin expected results as regression checks with immediate pass/fail feedback.
Review semantic changes — Understand model, node, data-type, expression, row, column, and cell changes with focused highlights and granular accept/revert actions.
Find decision-table problems early — Validation and analysis surface gaps, overlaps, missing rules, and actionable details beside the editor.
AI-assisted modeling — Ask Aletyx AI to explain, analyze, or modify a model. Proposed edits arrive as reviewable changes rather than silent rewrites.
A workspace that matches VS Code — Light, dark, and high-contrast-aware UI with an integrated dock for Validation, Analysis, Changes, and Run.

See it in action

Ask Aletyx AI to create realistic test inputs, then send them directly to the integrated runner.


Pin expected outputs as regression checks and see pass/fail feedback immediately.	Inspect live evaluation values on hover to debug decision logic faster.

Start in seconds

Install the extension and open a .dmn or .dmns file.
Edit visually, then use Run to exercise the decision against your inputs.
Open Analysis to investigate decision-table findings.
Open Aletyx AI when you want help understanding or changing the model.

The extension also recognizes .bpmn and .bpmn2 files.

Aletyx AI Assistant

Use the gear in the Assistant header—or run Aletyx: Set AI Assistant API Key from the Command Palette—to add or replace your key. The credential is stored in VS Code Secret Storage and is supplied only to the local decision backend.

AI-generated model edits are presented in Changes, where you can inspect and accept or revert them before they become part of your model.

Local decision backend

The bundled backend starts automatically when a supported model opens. It requires Java 17 or newer. If Java is not available through JAVA_HOME or PATH, configure Aletyx › Decision Suite › Backend: Java Home in VS Code Settings.

Your local model files remain in your workspace. Content is sent to an Aletyx offering only when you explicitly use a connected feature such as the AI Assistant.

Commands

Aletyx: Set AI Assistant API Key
Aletyx: Clear AI Assistant API Key
Aletyx: Restart Decision Backend
Aletyx: Stop Decision Backend

See the complete 10.2.0 changelog.