Catalog — Browse

Lazy-loaded tree rooted at Source → Workspace/Metastore → Schema/Domain → Asset.

Endpoint

GET /api/catalog/browse?source=<source>&path=<a|b|c>

Source	Empty path	One segment	Two segments	Three segments
unity-catalog	Metastores (federated, deduped)	Catalogs (in workspace)	Schemas (in catalog)	Tables + Volumes
onelake	Workspaces	Items (lakehouse, warehouse, …)	—	—
purview	Business domains	Data products in domain	—	—

Path segments are pipe-separated (path=adb-…|main|bronze) so the segments themselves can contain dots and dashes safely.

Response shape

{ "ok": true, "nodes": [ { "id": "main", "label": "main", "kind": "catalog", "hasChildren": true, "meta": {…} } ] }

hasChildren: false nodes are leaf assets. Clicking a leaf opens the detail page in a new tab.

UI

/catalog/browse → tabs to switch source, lazy-loaded indented list with disclosure triangles. No third-party tree library — the bundle keeps shipping Monaco + Fluent UI + MSAL only.