Sorry for the delay with this. Hook supports linking individual documents of InDesign but not in the context of the entire library of InDesign. If you access an individual document, it should work.
On Link-friendly Mac Apps – Hookmark we say:
- InDesign: √ with single document. Its book documents and library are not yet compatible with Hook.
also in release notes of Hook version 1.1.2 (2595) is now available - Releases - Hook Productivity Forum
- Hook also works with Adobe InDesign single-document windows. InDesign book and library windows are not yet supported by Hook.
Sorry that didn’t click in my head when I first looked at this topic. In general the compatible apps page should list limitations, potentially linking to a page or forum post that describes the integration in more detail if special considerations apply.