Use POST https://www.wixapis.com/stores-reader/v1/products/query to query products from a V1 store.
Basic query (all products):
CRITICAL: In V1, filter and sort are JSON-encoded strings, not objects — unlike V3 where they are plain objects.
Query with filter and sort:
Query by product IDs:
| Feature | Catalog V1 | Catalog V3 |
|---|---|---|
| Query endpoint | POST /stores-reader/v1/products/query | POST /stores/v3/products/query |
| Filter/sort | JSON-encoded strings | Plain objects |
| Additional fields | Not applicable | Enum values like DESCRIPTION, URL |
/stores/v3/ endpoints on a CATALOG_V1 site — they return 428 Precondition Required.