Project Sync — Metadata Inspector

A read-only inspector that walks the current Live Set and shows everything the Extensions SDK exposes in a collapsible tree.

Useful as:

• a quick reference while you're building your own extension (what does the SDK actually return for my set?), and
• a starting point — fork it as the data-collection half of a real "project sync" (export to file, post to a server, diff against a previous snapshot, etc.).

What it shows

Walks context.application.song and every reachable SDK object:

• Environment — storageDirectory, tempDirectory, language.
• Song — tempo, gridQuantization (+ triplet flag, decoded label), scale (rootNote, scaleName, scaleMode, scaleIntervals), and counts.
• Tracks (regular, returns, main) — name, mute, solo, arm, mutedViaSolo, groupTrack, plus:
  • Mixer — volume, panning, every send (each with current value, min, max, default, quantization, value items).
  • Devices — recursive. For RackDevice / DrumRack, each chain (and each chain's mixer + devices). For Simpler, the loaded sample.filePath. Every device parameter is dumped with its live value (async-fetched).
  • Clip slots — every slot, with its clip if any.
  • Take lanes — name + clips.
  • Arrangement clips — full clip data.
• Clips — for audio clips: filePath, warping, decoded warpMode, warp marker count. For MIDI clips: every note (pitch, startTime, duration, velocity, …).
• Scenes — name, tempo, signatureNumerator/Denominator.
• Cue points — name, time.

Because device-parameter values are async, the dialog gathers behind a progress bar; large sets with many devices take a moment.

Usage

1. Enable Developer Mode in Live's Preferences → Extensions.
2. npm install
3. npm start -- --live "/Applications/Ableton Live Beta.app"
4. In Live, right-click a scene, audio track, MIDI track, or audio clip → "Project Sync: Inspect metadata…".
5. The dialog opens with a tree of everything the SDK could see. Use:
   • the filter box (cmd-F) to grep keys and values,
   • Expand / Collapse all,
   • Copy JSON to copy the whole snapshot to the clipboard for diffing or sharing.

Files

• src/extension.ts — registers the context-menu actions; walks the Song object graph, builds a plain JSON snapshot, opens the dialog.
• src/project-sync.html — themed dark tree viewer with filter and copy.
• build.ts — esbuild bundling, with the .html text loader.