ARA Sleuth

Visualize and compare ARA2 host behavior across DAWs.

ARA Sleuth is a free, open-source debug tool for ARA2 plugin developers. It runs as a VST3 plugin, intercepts all ARA API calls from the host, and displays them on a real-time timeline — making undocumented DAW differences visible.

ARA Sleuth main interface

Key Features

  • Real-time event timeline with thread-lane visualization and hierarchical spans
  • Side-by-side session comparison for cross-DAW analysis
  • Auto-analyzed session summary: instance roles, creation order, persistentID format
  • Defensive design — never crashes, logs unexpected DAW behavior instead
  • Session save/load (JSON) with DAW metadata for offline review
  • Category-based event filtering with detailed argument logging