Amazon Research JS: product database/query API

Use Amazon Research JS: product database/query API through Nexscope with documented parameters, structured results and API key authentication.

CostRecent Avg. 131 · Range 67–133 credits / call

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POST · https://api.nexscope.ai/js/product-database/queryMCP · nexscope_data_js_product_database_query

Amazon Research JS

What this API does

Use Amazon Research JS: product database/query API through Nexscope with documented parameters, structured results and API key authentication. The request accepts marketplace, includeKeywords, excludeKeywords, categories, minPrice. Its documented result includes productDatabaseList, id, title, brand, category, breadcrumbPath, price, approximate30DayUnitsSold.

Amazon Research JS: product database/query API API use cases

Inspect a candidate product

To inspect a candidate product, a marketplace analyst submits marketplace and includeKeywords to Amazon Research JS: product database/query API. The returned productDatabaseList, id, title help inspect the documented attributes of the candidate product.

Compare listing details

A marketplace analyst uses Amazon Research JS: product database/query API with marketplace and includeKeywords to compare listing details. The returned productDatabaseList, id, title help compare product details with another shortlisted listing.

Prepare product evidence for a sourcing review

For this workflow, a marketplace analyst calls Amazon Research JS: product database/query API with marketplace and includeKeywords to prepare product evidence for a sourcing review. The result helps record product facts before a sourcing discussion.

Amazon Research JS: product database/query API API FAQ

What does the Amazon Research JS: product database/query API API return?

Use Amazon Research JS: product database/query API through Nexscope with documented parameters, structured results and API key authentication. The documented output includes productDatabaseList, id, title, brand, category, breadcrumbPath, price, approximate30DayUnitsSold. It corresponds to the supplied marketplace, includeKeywords, excludeKeywords, categories, minPrice. Optional fields can be absent; a missing value should not be interpreted as a measured zero. Example values illustrate the response shape, rather than live account results.

How many credits does the Amazon Research JS: product database/query API API cost?

The current documented cost is Recent Avg. 131 · Range 67–133 credits / call. This is the same cost shown at the top of this page. If a range or estimate is displayed, the final charge depends on the request. Review your available credits and the pricing page before calling the API, and check API usage records for the actual charge.

How do I call the Amazon Research JS: product database/query API API from my app or an MCP client?

Send a POST request to https://api.nexscope.ai/js/product-database/query with your API key as a Bearer token and the JSON inputs shown in API integration. In a compatible MCP client such as Claude or Cursor, connect Nexscope and call nexscope_data_js_product_database_query. The same documented request parameters apply; use Online test to review a request before adding it to your app.

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Endpoint

https://api.nexscope.ai/js/product-database/query

MCP method

nexscope_data_js_product_database_query

Step 1 of 3 · Authenticate

Authentication

All run endpoints require a user API key. Send it as a bearer token in the Authorization header.

Authorization: Bearer nk-xxxxxxxxxxxxxxxxx

Missing or invalid API keys return an authentication error. Manage keys from .

Step 2 of 3 · Send a request

POSThttps://api.nexscope.ai/js/product-database/query

Run an API

Send a JSON request body using the parameters described below.

Example request

Replace YOUR_API_KEY, then run this command in your terminal.

curl -X POST 'https://api.nexscope.ai/js/product-database/query' \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "includeKeywords": "yoga mat",
  "marketplace": "us",
  "maxPrice": 50,
  "minRating": 4,
  "minSales": 300,
  "needCount": 20,
  "sort": "-sales"
}'

Step 3 of 3 · Inspect the result

Check the response

Read code for the request status and data for the result. Open the parameter and response reference for the full field definitions.

HTTP status codes

Code	Description
200	HTTP request completed. Check JSON code; only 0 indicates business success or acceptance.
400	Request JSON or required API parameters are invalid.
401	API key is missing, invalid, or cannot be matched to a user.
5xx	API execution or upstream service failed.

View parameters & response Try online

All categories/ Amazon Research JS

POSThttps://api.nexscope.ai/js/product-database/query

Run this API

Send a JSON request to execute this API and receive the documented response payload.

Open tester

Endpoint

Method	`POST`
Path	`https://api.nexscope.ai/js/product-database/query`
Auth	`Bearer API key`
Content-Type	`application/json`

Request parameters

Name	Type	Required	Description
`marketplace`	`string`	required	Target market code. Optional values: `us`, `uk`, `de`, `in`, `ca`, `fr`, `it`, `es`, `mx`, `jp` Example: us
`includeKeywords`	`string`	optional	Title/ASIN contains keywords, comma separated, up to 100 items, each item can be up to 50 characters
`excludeKeywords`	`string`	optional	Title/ASIN excluded keywords, comma separated, up to 100 items, each item can be up to 50 characters
`categories`	`string`	optional	Main category names, separated by commas, must match the standard category names of the corresponding site. Examples of US sites: Appliances, Arts Crafts & Sewing, Automotive, Baby, Beauty & Personal Care, Books, CDs & Vinyl, Cell Phones & Accessories, Clothing Shoes & Jewelry, Collectibles & Fine Art, Computers, Digital Music, Electronics, Garden & Outdoor, Grocery & Gourmet Food, Handmade, Health Household & Baby Care, Home & Kitchen, Industrial & Scientific, Kindle Store, Kitchen & Dining, Movies & TV, Musical Instruments, Office Products, Pet Supplies, Sports & Outdoors, Tools & Home Improvement, Toys & Games, Video Games, etc.; other sites have corresponding local category names
`minPrice`	`number`	optional	lowest price
`maxPrice`	`number`	optional	highest price
`minSales`	`integer`	optional	Minimum monthly sales
`maxSales`	`integer`	optional	Highest monthly sales
`minRevenue`	`number`	optional	minimum monthly income
`maxRevenue`	`number`	optional	highest monthly income
`minReviews`	`integer`	optional	Minimum number of comments
`maxReviews`	`integer`	optional	Highest number of comments
`minRating`	`number`	optional	Lowest rating (1.0-5.0)
`maxRating`	`number`	optional	Highest rating (1.0-5.0)
`minWeight`	`number`	optional	Minimum weight (lbs)
`maxWeight`	`number`	optional	Maximum weight (lbs)
`minRank`	`integer`	optional	Lowest BSR Rank
`maxRank`	`integer`	optional	Highest BSR Rank
`minLqs`	`integer`	optional	Minimum LQS score (1-10)
`maxLqs`	`integer`	optional	Highest LQS score (1-10)
`minSellers`	`integer`	optional	Minimum number of sellers
`maxSellers`	`integer`	optional	Maximum number of sellers
`minNet`	`number`	optional	minimum net profit
`maxNet`	`number`	optional	highest net profit
`sellerTypes`	`string`	optional	Seller types, separated by commas. Optional values: `amz` (Amazon self-operated), `fba`, `fbm`
`productTiers`	`string`	optional	Product size hierarchy, separated by commas. Optional values: `oversize`, `standard`
`excludeTopBrands`	`boolean`	optional	Whether to exclude top brands
`excludeUnavailableProducts`	`boolean`	optional	Whether to exclude unpurchasable items
`minUpdatedAt`	`string`	optional	Data update start date (YYYY-MM-DD)
`maxUpdatedAt`	`string`	optional	Data update deadline (YYYY-MM-DD)
`needCount`	`integer`	optional	The total number of results to be returned, automatic paging within the API
`sort`	`string`	optional	Sort field. Available options `name` `-name` `category` `-category` `revenue` `-revenue` `sales` `-sales` `price` `-price` `rank` `-rank` `reviews` `-reviews` `lqs` `-lqs` `sellers` `-sellers` `-`. A leading `-` sorts in descending order Example: name

Code example

{
  "includeKeywords": "yoga mat",
  "marketplace": "us",
  "maxPrice": 50,
  "minRating": 4,
  "minSales": 300,
  "needCount": 20,
  "sort": "-sales"
}

Response example

Platform response envelope. code 0 indicates success or acceptance; data contains the business result.

{
  "code": 0,
  "cost": "-1",
  "data": {},
  "msg": null,
  "time": "2026-01-01 00:00:00",
  "traceId": null,
  "ts": "0"
}

Response fields

Response field reference (41 fields)

Name	Type	Required	Description
`costToken`	`integer`	optional	Number of tokens consumed
`productDatabaseList`	`array`	optional	Product data list
`id`	`string`	optional	Product unique identifier
`title`	`string`	optional	product title
`brand`	`string`	optional	brand name
`category`	`string`	optional	Main category
`breadcrumbPath`	`string`	optional	Full classification path
`price`	`number`	optional	Current selling price (USD)
`approximate30DayUnitsSold`	`integer`	optional	Estimated sales in the past 30 days
`approximate30DayRevenue`	`number`	optional	Estimated revenue for the last 30 days (USD)
`productRank`	`integer`	optional	BSR Ranking
`reviews`	`integer`	optional	Total number of comments
`rating`	`number`	optional	Average rating (1.0-5.0)
`listingQualityScore`	`integer`	optional	Listing Quality Score (LQS, 1-10)
`numberOfSellers`	`integer`	optional	Number of sellers on sale
`sellerType`	`string`	optional	Seller type (amz/fba/fbm)
`imageUrl`	`string`	optional	Product main image URL
`dateFirstAvailable`	`string`	optional	Date first put on shelves
`weightValue`	`number`	optional	Product weight
`weightUnit`	`string`	optional	weight unit
`lengthValue`	`number`	optional	length
`widthValue`	`number`	optional	Width
`heightValue`	`number`	optional	height
`dimensionsUnit`	`string`	optional	Dimensional unit
`parentAsin`	`string`	optional	Parent ASIN
`isParent`	`boolean`	optional	Is it the parent body?
`isVariant`	`boolean`	optional	Is it a variant?
`isStandalone`	`boolean`	optional	Is it an independent product?
`isAvailable`	`boolean`	optional	available for purchase
`buyBoxOwner`	`string`	optional	Buy Box holds seller name
`buyBoxOwnerSellerId`	`string`	optional	Buy Box holds seller ID
`updatedAt`	`string`	optional	Data update time
`feeBreakdown`	`object`	optional	Fee details: `fbaFee` (FBA fee), `referralFee` (referral fee), `variableClosingFee` (variable settlement fee), `totalFees` (total fee)
`subcategoryRanks`	`array`	optional	Subcategory BSR ranking list, each containing `subcategory`, `rank`, `id`
`type`	`string`	optional	Resource type
`variants`	`array`	optional	Variation list
`upcList`	`array`	optional	UPC code list
`eanList`	`array`	optional	EAN code list
`isbnList`	`array`	optional	ISBN code list
`gtinList`	`array`	optional	GTIN code list
`dateFirstAvailableIsEstimated`	`boolean`	optional	Is the release date an estimate?

Responses

Code	Description
200	HTTP request completed. Check JSON code; only 0 indicates business success or acceptance.
400	Request JSON or required API parameters are invalid.
401	API key is missing, invalid, or cannot be matched to a user.
5xx	API execution or upstream service failed.

Data source, freshness, and limitations

Source, freshness, coverage, rate limits, and estimation notes are not specified in this API definition unless they appear in the request or response field documentation above. Do not assume official marketplace data or real-time freshness when it is not explicitly documented.

Step 1 of 2 · Connect your MCP client

MCP

V2 recommended

Connect remote agents through the standard MCP 2025-11-25 Streamable HTTP endpoint. Use OAuth 2.1 Authorization Code with PKCE, or an API key for compatibility.

POST https://api.nexscope.ai/mcp
MCP-Protocol-Version: 2025-11-25
Content-Type: application/json

Authentication

OAuth clients request the mcp:tools scope. The endpoint's 401 response advertises protected-resource metadata for authorization discovery.

Step 2 of 2 · Call the tool

Call a tool

{
  "jsonrpc": "2.0",
  "id": "tool-call-1",
  "method": "tools/call",
  "params": {
    "name": "nexscope_data_js_product_database_query",
    "arguments": {
      "includeKeywords": "yoga mat",
      "marketplace": "us",
      "maxPrice": 50,
      "minRating": 4,
      "minSales": 300,
      "needCount": 20,
      "sort": "-sales"
    }
  }
}

Legacy MCP v1

Existing API-key clients can continue using the compatibility endpoint. New integrations should use MCP v2.

GET / POST /mcp/legacy

Online test

Execute the current API with your API key and JSON payload. Online tests use this site's configured API environment; the Endpoint and copyable examples use the public integration address.

88 credits / callAPI usage records

Try it

Send a real request with the same contract shown in the reference.

Endpoint

/js/product-database/query

MCP method

nexscope_data_js_product_database_query

API key*

JSON payload*

cURL

curl -X POST \
  https://api.nexscope.ai/js/product-database/query \
  -H "Authorization: Bearer nk-..." \
  -H "Content-Type: application/json" \
  -d '{ "includeKeywords": "yoga mat", "marketplace": "us", "maxPrice": 50, "minRating": 4, "minSales": 300, "needCount": 20, "sort": "-sales" }'

Response

No response yet. Run the request to see the response here.

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What this API does

Amazon Research JS: product database/query API API use cases

Inspect a candidate product

Compare listing details

Prepare product evidence for a sourcing review

Amazon Research JS: product database/query API API FAQ

What does the Amazon Research JS: product database/query API API return?

How many credits does the Amazon Research JS: product database/query API API cost?

How do I call the Amazon Research JS: product database/query API API from my app or an MCP client?

Authentication

Run an API

Example request

Check the response

HTTP status codes

Run this API

Endpoint

Request parameters

Code example

Response example

Response fields

Responses

Data source, freshness, and limitations

MCP

Call a tool

Legacy MCP v1

Online test

Try it

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