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validate-vst3

Validate VST3 plugins (.vst3 bundles) using Steinberg's official validator tool. Use when user says "run VST3 validator", "validate VST3", "test the .vst3", or needs Steinberg-specific test suites. Prefer this over pluginval for multi-bus VST3 plugins.

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

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Feb 11, 2026
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# VST3 Validator

## Plugin Install Locations

The `validator` accepts a direct path, but `validator -list` only scans standard locations.

| 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/` |

## Instructions