Try the Kroger categories API

- `categories[]` is a flat list — every leaf category a shopper can browse to from Kroger's own site menu. 321 entries across 7 departments (Fresh, Grocery, Beer/Wine/Liquor, Health/Beauty/Baby, Cleaning/Household, Home/Electronics/Toys, Pet) at time of writing. - Each entry's `category_id` and `slug` are directly usable as `kroger-category`'s own `category_id` and `slug` query parameters. - `department` is a convenience field equal to `breadcrumb[0]`. - `breadcrumb` is the full department > aisle > category path. Kroger's own menu sometimes repeats a level's name at the next level down (e.g. "Fresh Fruit & Vegetables" as both an aisle group and its own sole subgroup); that repetition is collapsed so the breadcrumb reads cleanly without losing a real hierarchy level. - `departments` lists the top-level departments that contributed at least one category, in Kroger's own menu order. Kroger's site menu carries 12 top-level entries in total; the other 5 ("Popular", "Seasonal Favorites", "Our Brands", "Gift Cards", "Explore More") are marketing shortcuts with no category-browse links and are correctly excluded rather than padding the list with unusable entries. - The same `category_id` can legitimately appear more than once, cross-listed under different departments with a different display `slug` (e.g. Kroger's own menu lists id `05017` as both "Bacon & Breakfast Sausage" under Fresh > Meat and under Grocery > Breakfast). Both entries are kept — neither is a duplicate to collapse away. - **Known gap, not silently covered up**: Kroger's search API accepts `category_id` values coarser than any entry returned here — the originally-shipped `kroger-category` example (`slug=pet`, `category_id=27`) is a top-level department id, one level up from every leaf id this endpoint enumerates (Kroger's own menu links to a `/d/pet-supplies` landing page for "Shop All Pet" instead of a `/pl/` category id). That coarser department-id space is not enumerated by this endpoint. Every `slug`/`category_id` pair this endpoint does return works with `kroger-category`.