Extending Items
Extend turns page-grain Items into the connected analytical entities used for cross-store comparison. It publishes Products, exact Variants, source Listings, observed Offers, review aggregates, Stores, and Change events.
Extend is in beta. Matching quality depends on the identifiers, normalized options, and product evidence available in the source Items.
How Extend runs
Extend runs automatically on a regular basis over eligible enriched data. It is not a customer-created job and there is no general public Extend mutation endpoint.
Use Extend > Graph to inspect the latest recorded run and the current Product-to-Variant-to-Listing-to-Offer relationship counts.
Inspect changes
Use Extend > Changes to inspect recently published changes. The current dashboard supports one-hour and one-day windows plus filters for entity, aspect, and action.
Entities include Product, Variant, Listing, Offer, Store, and Review. Actions include added, changed, removed, and reappeared.
Changes are also available to the constrained query endpoint and dashboard
agent as extralt.changes. The underlying final entity tables are not exposed
through that generic SQL query tool.
Interpret the graph correctly
- A Product is a canonical family, not an observed page.
- A Variant is the exact cross-store matching unit.
- A Listing is one Store and source SKU identity linked to a Variant.
- An Offer is an append-only seller, price, availability, and stock observation for a Listing.
- A Store currently means an organization-scoped host and country pair.
See the data model, semantic model, and query semantics before building analysis over these entities.