Pull ranked Amazon Best Sellers Top Rated and by-category lists as JSON, then check keyword demand with the same Amazon source.
Live data as of 2026-07-29
The Amazon Best Sellers API on Trends MCP returns live ranked product lists for Amazon Best Sellers Top Rated and Amazon Best Sellers by Category through one get_top_trends call each. A July 29, 2026 pull returned 25 Top Rated rows and 25 by-category rows (as_of 2026-07-27), with #1 Top Rated held by Amazon Basics 20-Pack AA Alkaline Batteries. Pair ranks with get_growth on source amazon to separate shelf leaders from rising search demand. Free access starts at 100 requests per month.
From the Trends MCP pull of July 29, 2026 (feed as_of_ts 2026-07-27T04:01:42+00:00), the Top Rated board and category winners look like this:
| Rank | Product (short) | Feed |
|---|---|---|
| 1 | Amazon Basics 20-Pack AA Alkaline Batteries | Top Rated |
| 2 | Amazon Basics AAA Alkaline Batteries, 36-Count | Top Rated |
| 3 | Crocs Unisex-Adult Classic Clog | Top Rated |
| 4 | Amazon Basics Microfiber 4 Piece Bed Sheet Set, Full, Dark Gray | Top Rated |
| 5 | Queen Size 4 Piece Sheet Set, White | Top Rated |
| 6 | essence Lash Princess False Lash Effect Mascara | Top Rated |
| 7 | Gildan Men's Crew T-Shirts, Multipack G1100 | Top Rated |
| 8 | Affresh Washing Machine Cleaner, 6 Tablets | Top Rated |
| 11 | Tide PODS laundry detergent pacs, 112 Count | Top Rated |
| 18 | Bounty Paper Towels Quick Size, 16 Family Rolls | Top Rated |
| 25 | STANLEY Quencher H2.0 Tumbler 30 oz, Rose Quartz 2.0 | Top Rated |
| 1 | Nespresso Capsules Vertuo Variety Pack, 30 Count | Grocery Gourmet Food |
| 1 | EUHOMY Countertop Ice Maker, 26lbs/24Hrs | Appliances |
| 1 | Pampers Swaddlers Size 5, 132 Count | Baby |
| 1 | Owala FreeSip Stainless Steel Water Bottle 24 oz Very, Very Dark | Kitchen Dining |
Growth follow-ups on the same pull (source amazon, latest successful points dated 2026-06-30) show why ranks alone mislead. Crocs Classic Clog rose +73.31% over 30 days (volume 82,146 vs 47,423) and +3603.7% over 3 months (volume 82,146 vs 2,233). Stanley Quencher rose +48.25% over 30 days (volume 41,423) and +23.36% over 3 months. Tide PODS gained only +5.22% over 30 days at volume 731,616, then slipped -0.23% over 3 months. essence Lash Princess rose +3.75% (30D) and +9.5% (3M). Bounty Paper Towels was nearly flat at +0.99% (30D) and -4.18% (3M).
Two call shapes cover most Amazon bestseller research. get_top_trends with type Amazon Best Sellers Top Rated returns the cross-category ranked list. The same tool with type Amazon Best Sellers by Category returns category-tagged winners; optional category filters that feed. get_growth with source amazon and a product keyword returns period growth, including absolute volume when the pipeline has it.
{
"mode": "get_top_trends",
"type": "Amazon Best Sellers Top Rated",
"limit": 25,
"offset": 0
}
{
"mode": "get_growth",
"source": "amazon",
"keyword": "Crocs Classic Clog",
"percent_growth": ["30D", "3M"]
}
On July 29, 2026, both bestseller feeds accepted limit 25 and returned count 25. Offset 25 on the by-category feed returned another 25 rows, including #2 Health Household (Scott ComfortPlus Toilet Paper) and #2 Kitchen Dining (STANLEY Quencher 30 oz).
Amazon Product Advertising API is built for affiliate product lookups: price, availability, images, and reviews for known ASINs. It does not expose a documented Best Sellers leaderboard endpoint for open research use. Trends MCP stores ranked snapshots and returns them as [rank, title] or [rank, title, category] pairs, so a dashboard can refresh without scraping HTML.
Three practical differences show up in production. First, output shape: ranks arrive pre-sorted, not as raw product search hits. Second, history for demand: keyword growth on source amazon covers multi-month windows (48 data points were available for Crocs, Stanley, Tide, essence, and Bounty on the July 29 pull). Third, auth: one Trends MCP key covers Amazon ranks plus Google, TikTok, Reddit, and YouTube feeds. For ASIN-level catalog fields, keep Product Advertising API; for "what is winning the Best Sellers board today," use the Trends MCP feeds.
E-commerce teams scan Top Rated for cross-category shelf pressure, then open by-category rows when a niche (Baby, Grocery, Kitchen Dining) matters more than the global list. Content and SEO teams turn #1 and #2 titles into comparison briefs when 30-day Amazon search growth exceeds roughly 40%, the bar Stanley (+48.25%) and Crocs (+73.31%) cleared on June 30, 2026 data. Investors treat sudden 3-month spikes with tiny baselines cautiously: Crocs' +3603.7% sat on a March baseline volume of only 2,233.
A short loop used in practice: pull Top Rated at limit 25, pull by-category at limit 25, pick 3 overlapping brand keywords, then run get_growth with ["30D", "3M"]. That is 5 requests. On the free plan (100 requests/month), the loop fits a daily weekday cadence with room left for other sources. See the broader Amazon trends API for keyword time series, and Amazon search trends for demand-focused workflows.
Amazon Best Sellers titles are long retail strings, not clean brand codes. Duplicate ranks appear when the same SKU wins multiple category slots; blink plus plan appeared at Top Rated ranks 9 and 10 on the July 27 as_of snapshot. Growth windows can fail for short presets: every 7D Amazon growth call on July 29, 2026 returned collapsed_range because recent and baseline resolved to the same monthly point. Prefer 30D and 3M for Amazon keywords until denser daily history is available.
Coverage is a ranked feed, not a full catalog scrape. Items outside the returned page need a higher limit (max 200) or offset pagination. Absolute volumes exist for many Amazon keywords (Tide PODS recent_volume 731,616) but are not a substitute for Amazon's private sales figures. Treat ranks as attention and assortment signals, then confirm with inventory and margin data from your own stack.
Trends MCP prices by request, not by Amazon SKU. Free: 100 requests/month. Starter: $19/month for 1,000. Pro: $49/month for 5,000. Business: $199/month for 25,000. Annual billing saves 20%. One get_top_trends page is one request; one get_growth call is one request even when multiple periods ride along. Current plan tables live on pricing. For the full source map, see data sources.
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