Try the Shopify Collections API

- Valid empty result pages return `200` with an empty `collections` array. - Blocked pages, malformed JSON, and missing `collections` roots return upstream errors. - For some storefronts, the response includes `transport_mode: "ssr_embedded"`, and `title` is a best-effort derivation from the handle (hyphens become spaces, each word title-cased) — **not** the storefront's real display name. `products_count` and other fields not available for these storefronts are omitted, never fabricated. `transport_mode` is omitted entirely for other stores. - In this fallback mode, `handle` is derived from the last path segment of the collection URL and is not guaranteed unique: some storefronts nest gender/audience-scoped sub-collections under the same final segment (for example `/collections/all-products/womens` and `/collections/legacy/womens` both derive `handle: "womens"`). Use the item's own `url` to identify a specific nested collection rather than assuming `handle` alone round-trips through `GET /shopify/collections/{handle}/products`. `transport_mode` allowed values: `ssr_embedded` (only ever present, never any other value; omitted for the classic transport).