NativePort

Superpowers for your agent

Find the real best price

A pile of dozens of identical mint stand mixers, each with a white price tag showing a real price from the sample, from $252 to $684.95; on top, the winner with a red $249.99 tag, a red superhero cape with a squiggly N draped beside it and a plush-sized cloth eye mask hanging from the tag

Let your agent compare Amazon, Google Shopping, eBay and store pages, and know where anything you want to buy is really cheapest.

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Any agent that can connect an MCP server uses the same NativePort key.

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Sample analysis

Price Comparison of the KitchenAid Artisan KSM150PS Stand Mixer

1 / 8
01 · Where and whatSep 26, 2026 · US stores and Amazon

738 offers for one mixer. 381 were the KSM150PS.

The product: KitchenAid Artisan Series 5-quart tilt-head stand mixer, model KSM150PS, in any color (the color is the last letters: KSM150PSER is Empire Red).

SourceOffers readUnique, with a priceExact KSM150PS
Google Shopping (no Amazon offer in it)11910867
Amazon: every seller, 32 colors133101101
Amazon search72343
eBay listings345237183
Walmart, Home Depot search696427
All: 47 stores, 6 Amazon sellers, 192+ eBay sellers738544381

How an offer counts as the KSM150PS: on Amazon, the model number on each color's own page (all 32 read KSM150PS plus a color code, 120 V); elsewhere, an AI model read each title for the model, the size and what's in the box (inferred).

Set aside: 63 bundles or special bowls, 66 other models, 28 parts, 5 imports built for 220 V, 1 not a price.
02 · The answerCheapest real offers, shipping included

Amazon's lowest new price is $479. An eBay seller has it new for $252.

OfferTotalvs list
Refurbished from KitchenAid, the brand's own store$249.99−50%
New from an eBay seller with 1,000 ratings, 99.6% positive$252.21
$225 + $27.21 shipping		−50%
New on Walmart's own page (Google Shopping showed $499)$399.99−20%
New on Amazon, its lowest price (7 of its 32 colors)$479−4%
New from 13 big stores: Home Depot, Target, Lowe's, Wayfair, Macy's…$499.95–$499.990%
List price $499.99 on KitchenAid.com. Totals as each store showed them. The KitchenAid and eBay pages were opened and checked (model, condition, price), Walmart's for its price; Amazon's from each color's own page.
03 · The spreadOutside eBay, cheapest first

33 stores and sellers, one mixer: $249.99 to $684.95

Store (new unless marked)ShippingTotalvs list
KitchenAid (refurbished)Free$249.99−50%
Home Outlet DirectFree$379.99−24%
Walmart (its page; Google showed $499), Beach Camera on WalmartFree$399.99−20%
Arbor$49.99$429.98−14%
Best BuyFree$449.99−10%
Amazon.com (Matte Black), Beach Camera on Amazon, Zanduco.comFree$479−4%
Home Depot, Lowe's, Target + 17 more (3 of them on Amazon)Free$499.95–$499.990%
2 more stores$11.99–$27.70$497.69–$511.980% to +2%
Always Quality on Amazon and WalmartFree–$33.14$583.13–$599.87+17% to +20%
SANE Sewing & Housewares$9.95$684.95+37%
Cheapest new offer per store or seller with shipping shown. A store page we opened overrides Google's price.
04 · Amazon, color by color32 pages, 101 offers

Amazon lists 32 colors of the KSM150PS. None is under $479 new.

Cheapest new offer per color, any seller (27 in stock, 5 unavailable)
$4797 colors
$4891 color
$4993 colors
$499.9513 colors
$499.993 colors
Other ways to buy it on AmazonOffersTotal
New, sold by Amazon itself23$479–$499.99
Refurbished or Renewed6$402.53–$499.99
Used, all above the new price3$559.87–$633.50
Each color's page and its list of every seller, read on Sep 26, 2026 for a New York delivery address. 22 of the 72 Amazon search results were ads, none for this mixer.
05 · What drives the gapMedian total vs list, exact mixer

Refurbished costs 50% less. New costs list price on Amazon and big stores.

Refurbished · 18 · $249.99−50%
Used · 84 · $276.96−45%
Open box, eBay · 18 · $379.63−24%
New, eBay sellers 1,000+ at 99%+ · 33 · $380.74−24%
New, smaller eBay sellers · 54 · $399.99−20%
New, shops rated on Google · 5 · $499.950%
New, on Amazon · 95 · $499.950%
New, big stores · 22 · $499.950%
Label · offers · median total with shipping (price when shipping isn't shown). Not in a bar: 20 Walmart search results (seller not shown), 2 Walmart marketplace offers, 12 eBay listings without a condition, 10 new offers without a seller rating.
06 · CatchesWhat the cheapest numbers hide

Four traps between the search and the real price

−$99Google lags the store

Walmart's page for the mixer read $449.99 on Sep 25 and $399.99 the next morning, 10 hours later, while Google Shopping still showed $499. The other 14 pages read on both days didn't move.

+$79Same seller, pricier on Amazon

Beach Camera, a seller on both, lists the white KSM150PS new at $399.99 on Walmart and $479 on Amazon, free shipping on both.

#14Shipping reshuffles the list

The cheapest new eBay listing by price ($220) falls to #14 of 85 once its $99.10 shipping is added. 102 of the 320 offers that show shipping charge for it.

8Too good to be true (inferred)

“New” offers at $91.42–$216.99 from 5 shops we couldn't verify, 57%–82% under list. And a $28.99 “price” that is a rent-to-own payment.

Shops we couldn't verify are not named. Flags are ours, not a verdict on any shop.
07 · RecommendationFor this mixer, today

Pay about $250, not $479 on Amazon

  1. Best value: refurbished from KitchenAid, $249.99 with free shipping and free 60-day returns.
  2. Best new: an eBay seller with 1,000 ratings at 99.6%, $252.21 with shipping; the listing says new, model KSM150PSBM.
  3. New from a big store: Walmart's page, $399.99; Google Shopping showed $499 with free delivery.
  4. On Amazon: $479 new is its floor; skip its used offers, priced above new.
  5. Skip: “new” under $220 from shops you can't verify, 220 V imports, and totals that hide shipping.
Prices read on Sep 26, 2026. They move (slide 06): check the page before you buy.
08 · MethodHow this was made

108 calls, 50 cents

  • Google Shopping: 3 searches (plain, refurbished, used; 81 offers) and the full store list for 4 products (38 offers).
  • Amazon: 3 searches (72 results), then the page and the list of every seller for each of its 32 colors (133 offers).
  • eBay: 2 searches of 120 listings, and the search page sorted by price with shipping (105 listings).
  • Store and eBay listing pages: 18 opened to read the live price, model and condition (Lowe's, Macy's and Crate & Barrel didn't load). Walmart and Home Depot search pages.
  • An AI model labeled 454 offers from their titles in 8 calls; 101 Amazon offers matched by the model number on the page.
Real run on Sep 26, 2026; collection took about 3 minutes.
Price

Pay per call

CallPrice
Store or listing page: live price, model, condition$0.00211 per page
Store search results$0.00211 per page
eBay search, cheapest first$0.00211 per page
Amazon search results$0.002638 per page
Amazon product page: price, model, stock, rating$0.002638 per product
Every seller of an Amazon product, with condition and shipping$0.002638 per product
Google Shopping offers$0.0264 per search
The stores selling one product, with totals and store ratings$0.0264 per product
eBay listings with shipping and seller rating$0.0264 per search

Billed per call at the price shown. Full breakdown: pricing.

Questions
What is NativePort?

An MCP for instant access to 30+ AI agent tools. With a single account, your agent gets all of them, and you pay per call.

What happens to my NativePort key?

You connect NativePort to your agent once; the key never goes in the chat, and your agent uses it only to call NativePort.

What does it look at?

Public prices and listings: Amazon, Google Shopping, eBay, and stores' own product and search pages. It doesn't log in, add to cart, buy anything or see your accounts.

Which agents can use it?

Any agent that can connect an MCP server: Muse, OpenAI, Claude, Hermes, OpenClaw, Instinct and others, with the same NativePort key.

Give your agent this superpower

New accounts get $1 of credit.