GET/costco/categoriesapiKey1 credit/request
Returns Costco category slugs and product counts relevant to an optional search term, each slug usable directly with GET /costco/search's category filter. Public data sourced from Costco's own search backend.
Optional: query.
Sampled 14 Oct 2026: 50 items. Filled in every item: slug, name, count. In the sample: count: 4 to 408, median 13; name: “Appliances” and 49 other values.
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GET/costco/product/{id}apiKey3 credits/request
Returns a Costco product's detail: title, description, manufacturer, image, price, stock status, and rating. Public data sourced from Costco's own product backend.
Required: id.
Sampled 14 Oct 2026: 9 fields returned with a value. In the sample: price: 1,399.99; manufacturer: “LG ELECTRONICS USA INC”; image_url: gdx-assets.costco.com; buyable: true; title: 102 characters; description: 753 characters; rating: 4.43; rating_count: 479.
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GET/costco/product/{id}/availabilityapiKey1 credit/request
Returns a Costco product's stock and estimated-delivery status for a delivery destination. Public data sourced from Costco's own fulfillment backend.
Required: id, postal_code, state.
Sampled 14 Oct 2026: 6 fields returned with a value. In the sample: supplier_available_date: 2026-10-14; availability: “INSTOCK”; available_for_sale: true; fulfilled_by: “Innovel”; estimated_delivery_date: 2026-10-16.
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GET/costco/product/{id}/reviewsapiKey3 credits/request
Returns a page of a Costco product's reviews: title, text, rating, author, and recommendation for each. Public data sourced from Costco's own review platform.
Required: id.
Sampled 14 Oct 2026: 20 items. Filled in every item: id, text, rating, submitted_at. Not in every item: title (18), author (19), recommended (11). In the sample: submitted_at: 2025-04-26 to 2026-09-24; rating: 1 to 5, median 4; recommended: true in 11 of 11; text: median 528 characters.
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GET/costco/searchapiKey3 credits/request
Returns public Costco products matching a text query and/or a category slug: title, brand, model, image, and rating for each result. GDX is primary; if GDX is blocked, query-only searches may return explicitly partial product-sitemap results.
Optional: query, category.
Sampled 14 Oct 2026: 24 items. Filled in every item: id, url, title, brand, model, image_url, categories. Not in every item: rating (23), rating_count (23). In the sample: brand: Whirlpool (6), LG (5), Samsung (4) and 5 more; rating: 3.03 to 4.55, median 4.09; title: “LG 20 cu. ft. Top Freezer Refrigerator” and 23 other values; url: costco.com; categories: median 3 entries; model: “LTCS20020V” and 23 other values; image_url: gdx-assets.costco.com and 1 other host; rating_count: 11 to 2,008, median 410.
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GET/costco/warehousesapiKey1 credit/request
Returns Costco warehouses near a latitude/longitude, sorted by distance: name, address, and distance for each. Public data sourced from Costco's own warehouse locator backend.
Required: latitude, longitude.
Sampled 14 Oct 2026: 47 items. Filled in every item: id, name, type, address_line1, city, state, postal_code, latitude and 2 more. In the sample: state: WA (30), BC (10), OR (7); distance_miles: 0.08 to 173.08, median 85.27; name: “Seattle” and 46 other values; city: “SEATTLE” and 44 other values.
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