Hosts Revit

Revit Features

Revit is the main supported RevitDevTool v3.0 experience.

Supported Versions

The current build matrix supports Autodesk/Revit configurations from 2022 through 2027:

Revit version	Target framework
2022-2024	net48
2025-2026	net8.0-windows
2027	net10.0-windows

What You Can Do In Revit

• run Python scripts that call the Revit API;
• install Python dependencies from script metadata;
• debug Python in VSCode;
• run compiled Revit add-ins;
• run C# .csx, F# .fsx, and IronPython scripts;
• inspect logs and Python stack traces;
• visualize temporary Revit geometry;
• expose selected tools through MCP;
• run pytest-style checks that need Revit context;
• search and run commands through Command Browser;
• watch memory usage when diagnosing heavy scripts.

Good Use Cases

Use case	Recommended page
Quick Python automation	Modern Python Scripting
Revit API add-in development	.NET Assembly Execution
Fast C# or F# experiment	Scripting Runtimes
Visual geometry debugging	Visualization Overview
AI-assisted tool access	AI Tool Integration
Tests that need Revit API context	PyTest Bridge

Revit API Context

Revit API calls must run in a valid Revit API context. Scripts launched through RevitDevTool are designed for that. Modeless UI or background work still needs to marshal Revit API calls back through the provided Revit execution path.

Geometry Visualization

Visualization is currently a Revit DirectContext3D feature. Geometry traced or printed by scripts can be shown temporarily in the active view without creating model elements.

Supported geometry categories include:

• XYZ/points
• curves and polylines
• bounding boxes/outlines
• meshes
• faces
• solids
• planes

See Visualization Overview.

Revit-Specific Caveats

• Revit API behavior cannot be fully validated by pure unit tests.
• Some workflows need a live Revit session.
• Geometry visualization is tied to active Revit view/rendering state.
• net48 compatibility still matters for Revit 2022-2024.
• Python/IronPython behavior depends on installed runtimes and enterprise machine restrictions.