Unity Editor Control
Two MCP Servers — Use the Right One
vb-unity (Script Generation — 22 tools, 258 actions)
Generates C# editor scripts. 3-step workflow: generate -> recompile -> invoke menu item.
Use for: VFX setup, audio pipelines, scene configuration, terrain, UI generation, gameplay systems, bulk content creation, procedural generation.
Key tools: unity_vfx, unity_audio, unity_ui, unity_scene, unity_gameplay, unity_game, unity_content, unity_world, unity_editor (recompile, screenshot)
unity-mcp (Direct Editor Control — 60+ tools)
Real-time editor manipulation. Immediate results, no script generation needed.
Use for: Play mode control, console log reading, scene queries, GameObject inspection, live debugging, test running, batch property changes.
Key tools:
| Tool |
Purpose |
editor-application-set-state |
Start/stop/pause play mode |
console-get-logs |
Read runtime errors and logs |
scene-get-data / scene-list-opened |
Query scene state |
gameobject-find / gameobject-modify |
Find and change GameObjects |
editor-selection-get/set |
Control editor selection |
screenshot-game-view / screenshot-scene-view |
Capture views |
script-execute |
Run C# code directly (Roslyn) |
reflection-method-call |
Call methods on live objects |
batch-execute |
Multiple ops in one round-trip |
run-tests |
Execute and read test results |
When to Use Which
| Task |
Use |
Why |
| Create brand VFX for all 10 types |
vb-unity |
Bulk generation |
| Check if VFX plays correctly |
unity-mcp |
Instant play mode + console |
| Set up terrain with lighting |
vb-unity |
Full pipeline |
| Query current scene during debug |
unity-mcp |
Immediate read |
| Modify 50 GameObject properties |
unity-mcp |
batch_execute |
| Generate procedural dungeon |
vb-unity |
Worldbuilding tools |
| Run tests and read results |
unity-mcp |
Console access |
| Check compile errors |
unity-mcp |
console-get-logs |
| Take screenshot for visual QA |
Either |
Both support screenshots |
| Recompile after vb-unity script |
unity-mcp |
Faster than vb-unity recompile |
Workflow Integration
1. Use vb-unity to GENERATE (VFX, audio, UI, scenes)
2. Use unity-mcp to VERIFY (play mode, console, screenshots)
3. Fix issues found, repeat
Requirements
- Unity Editor must be running with VeilBreakers3D project loaded
- unity-mcp bridge must be installed (IvanMurzak/Unity-MCP package)
- vb-unity connects via generated scripts; unity-mcp connects via WebSocket (port 8080)
