Best Amazon MCP servers for Cursor in 2026

Helium 10 MCP is the Amazon seller MCP to pick for keyword research, ads queries, and P&L inside Cursor. Keepa MCP is the pick for Buy Box and price history, and it requires a Keepa API subscription rather than Keepa Pro alone. Jungle Scout MCP sits on Cobalt marketplace intelligence and still ships no public Cursor JSON. Trends MCP is the pick for live Amazon Best Seller boards plus Amazon search-interest history, with a Cursor block that sets transport to "http". These jobs do not collapse into one winner. The comparison below uses vendor pages fetched on 10 September 2026.

Which Amazon MCP actually fits the job?

Pick the connector for the object the agent must return. Helium 10 MCP returns Cerebro-style keywords, listing scores, inventory health, and ads rows for a logged-in Helium 10 user. Keepa MCP returns decoded price histories, Product Finder queries, and category best-seller lists billed in Keepa tokens. Jungle Scout MCP answers category share and whitespace questions from Cobalt, after a demo. SmartScout MCP is a Business Snapshot or Enterprise Full Access add-on on that vendor's pricing grid. Trends MCP returns ranked Amazon Best Seller boards and amazon keyword growth. It does not estimate ASIN revenue.

Helium 10 wins the seller-ops query. Keepa wins the price-history query. Trends MCP wins the "what is climbing the Toys Games Best Seller board this week" query. Ranking Trends MCP first on reverse-ASIN work would be false.

What Helium 10 MCP installs in Cursor

Helium 10 published a paste-ready Cursor block on GitHub. That is new relative to the August 2026 landing page, which still described Claude, ChatGPT, and custom agents without a mcp.json sample. The README (accessed 10 September 2026) tells Cursor users to add this and omit headers so the client can run OAuth:

{
  "mcpServers": {
    "helium10-mcp": {
      "url": "https://mcp.helium10.com/mcp"
    }
  }
}

API token auth is not supported yet. Headless and CI setups that cannot open a browser are out. The same README lists 32 named tools across keyword research, product research, brand analytics, keyword tracking, listings, P&L, inventory, and a five-step ads query flow. The Helium 10 MCP landing page instead markets "40+ MCP tools." Cite both; do not flatten to 32 or 40+.

Access is gated on Diamond. The 10 September 2026 pricing grid shows Platinum at $129 monthly / $99 yearly (Saves $360) and Diamond at $359 / $279 (Saves $960). Enterprise prints $1,499 on both the monthly and yearly toggles. Diamond's feature list includes "Helium 10 MCP: Included free (up to 1,000 calls)." The comparison grid also marks MCP as an add-on starting at $50/mo. The MCP landing FAQ and the 2 September 2026 product post both say Diamond customers get MCP at no extra cost. Buyers should treat the 1,000-call cap and the $50 add-on as live grid copy until checkout matches one of those lines.

Named research tools that show up in a Diamond session include analyze_keywords (up to 200 keywords), get_keywords_by_asin, get_keywords_by_keyword, search_products, search_amazon_brand_analytics, listing score tools, eight P&L variants, and execute_ads_query as the terminal ads step. That is seller-account data. It is not a public Best Seller board.

Keepa MCP still needs an API subscription

Keepa's official MCP is hosted at https://keepa.com/mcp over Streamable HTTP. The 10 September 2026 docs page states an active Keepa API subscription is required; Keepa Pro in the browser is a different SKU. Tool calls spend the same tokens as REST. Claude.ai custom connectors cannot connect yet because those clients are OAuth-only; Keepa lists OAuth as planned.

The Cursor block on Keepa's MCP docs has a url and a Bearer header. It does not set transport:

{
  "mcpServers": {
    "keepa": {
      "url": "https://keepa.com/mcp",
      "headers": { "Authorization": "Bearer YOUR_API_KEY" }
    }
  }
}

Keepa Pro, verified from keepa.js (PROMO_PRICE_PRO_MONTH:29) and the English FAQ pack the same day, is 29 EUR per month or 290 EUR per year (12 months for the price of 10). Euro billing only. Dedicated API plans start separately; Pro already generates 1 token per minute, and dedicated API plans start at 20 tokens per minute. Do not treat the unofficial npx keepa-mcp-server package as the official host. The official server is the one on keepa.com.

Keepa can pull category best sellers as a tokenized API list. That is still ASIN research. Trends MCP's Amazon Best Sellers feeds are ranked boards with official category strings such as Toys Games and Electronics, default limit 25, max 200.

Jungle Scout MCP stays behind a Cobalt demo

Jungle Scout's MCP page (fetched 10 September 2026) ties the connector to Cobalt. New customers submit a demo form. Existing Jungle Scout or Cobalt customers ask a CSM. The page lists Claude, ChatGPT, Gemini, Copilot, and approved internal environments, with availability varying by platform. No Cursor mcp.json appears on that page or on the public pricing page.

Jungle Scout's public pricing page still hides Catalyst monthly SKUs behind "View Catalyst Pricing." Do not invent $49 / $79 / $149 Catalyst numbers from third-party roundups. The same page offers a 7-day money-back line for Catalyst and a Cobalt demo for brands. The MCP page cites 40,000 active seller engagements and 18% of Amazon's GMV. Jungle Scout's pricing page uses a different GMV line (18x GMV coverage). Cite both. The MCP does not replace Cobalt; it extends Cobalt into a chat client.

SmartScout is the other brand-map connector. On 10 September 2026, smartscout.com/pricing shows monthly Basic $49, Essentials $119, Business $299, and yearly Basic $29, Essentials $99, Business $239. Snapshot MCP is a Business-row item. Full Access MCP sits on the Enterprise card. Extra users are $49 on Basic, Essentials, and Business. The pricing page does not paste a Cursor JSON block. The OAuth connector host is https://mcp.smartscout.com/.

AMZScout publishes a Cursor block that is a third JSON dialect. The 10 September 2026 install page requires a paid Skill + MCP plan and a Bearer key from the purchase email:

{
  "mcpServers": {
    "amzscout": {
      "type": "streamable-http",
      "url": "https://chatbot.amzscout.net/mcp",
      "headers": { "Authorization": "Bearer YOUR_AMZSCOUT_API_KEY" }
    }
  }
}

Token-pack dollars on AMZScout were not re-verified on a live SKU grid this run. Check current Skill + MCP pricing on the vendor site before budgeting.

Cursor JSON that actually pastes

Four public Cursor shapes exist. Mixing them is the usual connect failure.

Trends MCP, from docs.md on 10 September 2026, uses the API host plus an explicit HTTP transport. That block is also on the Cursor setup page:

"trends-mcp": {
  "url": "https://api.trendsmcp.ai/mcp",
  "transport": "http",
  "headers": { "Authorization": "Bearer YOUR_API_KEY" }
}

Claude.ai Connectors use a different host (OAuth on the www MCP path). That host is not interchangeable with api.trendsmcp.ai. Windsurf uses serverUrl instead of Cursor's url + transport. VS Code uses "type": "http". Copying Keepa's no-transport block into a Trends MCP entry, or Helium 10's no-header OAuth URL into a Bearer host, will not authenticate.

Amazon-specific Trends MCP calls sit on two surfaces. Keyword history uses get_growth or get_time_series with source set to amazon and a product or category phrase. Live boards use get_top_trends with type set to Amazon Best Sellers Top Rated or Amazon Best Sellers by Category. Category boards need an official name. docs.md lists 26: Appliances, Apps Games, Arts Crafts Sewing, Automotive, Baby, Beauty Personal Care, Books, Camera Photo, Clothing Shoes Jewelry, Computers Accessories, Electronics, Grocery Gourmet Food, Handmade Products, Health Household, Home Kitchen, Industrial Scientific, Kitchen Dining, Musical Instruments, Office Products, Patio Lawn Garden, Pet Supplies, Software, Sports Outdoors, Tools Home Improvement, Toys Games, Video Games. The same docs file still says official names live on data-sources.md. data-sources.md on 10 September 2026 lists 20 live feeds and omits all four by Category boards, including Amazon Best Sellers by Category. Use the 26 strings from docs.md.

Default limit is 25, max 200. Free-plan boards return the top 10 and pin offset at 0. Climbers use sort "rank_change" and a window of 1d, 3d, 7d, 14d, or 30d. An Amazon example that still teaches the job next month:

{
  "mode": "get_top_trends",
  "type": "Amazon Best Sellers by Category",
  "category": "Toys Games",
  "sort": "rank_change",
  "window": "7d",
  "limit": 10
}

docs.md prices MCP get_top_trends at 1 credit per 10 requested rows, max 10 credits per call. REST is 1 request per call. The HTML pricing FAQ on the same day says one successful API or MCP call equals one request. Cite the split. Do not assume a limit of 100 is one credit.

Public Trends MCP SKUs on 10 September 2026: Free $0 / 100 requests; Starter $19 / 1,000; Pro $49 / 5,000; Business $199 / 25,000. Annual billing saves 20%. HTML yearly as billed: Starter $16/mo ($192/year), Pro $39/mo ($468), Business $159/mo ($1,910), with a "2 months free" toggle. HTML Free history is 90 days, top 10, 24-hour delay. Starter is 1 year, top 25, no delay. Pro is 2+ years, top 100 per feed. Business is the full archive. Keyword alerts: 10 / 50 / 250. docs.md still describes about 5 years of weekly history with no plan split. HTML cards say 35+ data sources; the HTML FAQ on the same page says 40+ sources; the homepage still says 21 platforms for get_top_trends; docs.md, llms.txt, and the MCP schema list 24 live feeds including the four by-Category boards. Do not flatten those counts.

A seller who needs Cerebro plus ads in Cursor should pay for Helium 10 Diamond and paste the no-header URL. A researcher who needs Keepa charts should buy the API plan and paste Keepa's Bearer block. An agent that must watch Amazon Best Seller climbers next to Google and TikTok belongs on Trends MCP. Amazon trend workflows in Cursor walk through that last path without pretending it is Black Box.

FAQ

Does Helium 10 MCP work on Platinum?

The MCP landing FAQ and the 2 September 2026 product post both restrict MCP to Diamond at no extra cost. Platinum on 10 September 2026 is $129/mo or $99/yr and does not list MCP in the same "included free" Diamond row. The pricing grid also shows an MCP add-on starting at $50/mo. Confirm at checkout which of those three lines is the live entitlement.

Can Keepa Pro call the MCP without an API key?

No. Keepa's MCP docs require an active API subscription and a Bearer access key from the API page. Keepa Pro at 29 EUR/mo or 290 EUR/year is the browser toolkit. Official MCP docs also note that Claude.ai custom connectors cannot connect yet.

Does Trends MCP return ASIN sales estimates?

No. source: "amazon" is search-interest history for a phrase. get_top_trends Amazon feeds are ranked Best Seller boards. Helium 10 search_products and Jungle Scout Cobalt are the ASIN estimate surfaces in this set. Trends MCP's Amazon edge is the live board plus the same agent calling Google, TikTok, and YouTube.

Why do the Cursor JSON blocks disagree on transport?

Helium 10 is OAuth: URL only, no headers, no transport. Keepa is Bearer on Streamable HTTP without a transport key. AMZScout sets "type": "streamable-http". Trends MCP's Cursor sample sets "transport": "http" plus a Bearer header. Those are four dialects. Copy the block that matches the host.

Is Jungle Scout MCP included with Catalyst?

The public MCP page says the connector is powered by Cobalt. Getting started is a demo form or a CSM, not a Catalyst self-serve toggle. Catalyst monthly prices remain behind a separate pricing page. If the job is Cobalt category share in chat, budget for a Cobalt conversation rather than a Catalyst card.

Sources (accessed 10 September 2026): Helium 10 MCP GitHub README, Helium 10 MCP landing, Helium 10 pricing, Helium 10 MCP product post, Keepa MCP docs, Jungle Scout MCP, SmartScout pricing, AMZScout Cursor install.