Individual skill

validate-vst3-editorhost

Test VST3 plugin UIs (.vst3 bundles) using Steinberg's EditorHost without a full DAW. Use when user says "test the plugin UI", "open in editorhost", "show the .vst3 editor", or wants to visually inspect the VST3 editor. For functional validation use validate-vst3 instead.

plugins/audio-plugin-validators/skills/validate-vst3-editorhost/SKILL.md

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Feb 11, 2026
License
MIT

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# VST3 EditorHost

Minimal VST3 host for testing plugin UIs without a full DAW.

## Plugin Install Locations

`editorhost` accepts a direct path to a `.vst3` bundle.

| Platform | User Location | System Location |
|----------|--------------|-----------------|
| macOS | `~/Library/Audio/Plug-Ins/VST3/` | `/Library/Audio/Plug-Ins/VST3/` |
| Windows | `%LOCALAPPDATA%\Programs\Common\VST3\` | `C:\Program Files\Common Files\VST3\` |
| Linux | `~/.vst3/` | `/usr/lib/vst3/` or `/usr/local/lib/vst3/` |