Skip to content
CSA Loom — the Microsoft Fabric experience for Azure tenants where Fabric isn't yet available: lakehouses, warehouses, notebooks, semantic models, Activator rules, Data Agents, across Commercial, GCC, GCC-High, and DoD IL5

Tutorial: Vector store editor

CSA Loom vector-store editor — verified working against a live console by the UAT harness on 2026-07-01.

Open the editor

  1. Sign in to your CSA Loom Console (for example https://<your-console-host>).
  2. Open or create a workspace from the Workspaces page.
  3. Click + New item and choose Vector store from the catalog.
  4. The editor opens at /items/vector-store/<id>:

Vector store editor

What this editor does

A Vector store is a backend-agnostic vector index — Cosmos vCore, AI Search, or PostgreSQL pgvector — for similarity search and RAG grounding. In Loom you pick a backend and define an index spec, which persists to item state; a live similarity test is deferred to v3.x.

Getting started

  1. Pick a backend — Choose Cosmos vCore, AI Search, or pgvector based on existing data gravity.
  2. Define the index — Set dimensions, distance metric, and fields in the create-index form.
  3. Save the spec — Save persists the index spec to item state; live similarity test is deferred to v3.x and disclosed.
  4. Ground RAG — Use the store for similarity search behind a prompt flow or data agent.

Learn more

Verified by the UAT harness