Amazon Research JS

Amazon Research JS: keywords/by keyword API

Amazon Research JS: keywords/by keyword API.

MCP tool name

nexscope_data_js_keywords_by_keyword

MCP endpoint

https://api.nexscope.ai/mcp

JSON-RPC method

tools/call

Authentication

Use OAuth 2.1 Authorization Code with PKCE and the mcp:tools scope. API keys remain supported as a compatibility option.

Authorization: Bearer nk-xxxxxxxxxxxxxxxxx

If authentication fails, ask the user to open API Access and copy a valid key.

Call this MCP tool

Initialize an MCP 2025-11-25 Streamable HTTP session at https://api.nexscope.ai/mcp, then use tools/call.

{
  "jsonrpc": "2.0",
  "id": "data-js-keywords-by-keyword-1",
  "method": "tools/call",
  "params": {
    "name": "nexscope_data_js_keywords_by_keyword",
    "arguments": {
      "marketplace": "us",
      "needCount": 20,
      "searchTerms": "yoga mat"
    }
  }
}

MCP 2025-11-25 · Streamable HTTP

Progress is delivered on the original POST SSE response. GET SSE carries notifications; reconnecting must query existing asynchronous work rather than submit again.

Arguments

Name	Type	Required	Description
`marketplace`	`string`	required	Target market code. Optional values: `us`, `uk`, `de`, `in`, `ca`, `fr`, `it`, `es`, `mx`, `jp` Example: us
`searchTerms`	`string`	required	Seed keyword (single keyword string) Example: {}
`needCount`	`integer`	optional	Return the total number of results Example: {}
`sort`	`string`	optional	Sorting field, defaults to descending order by exact search volume Example: -monthly_search_volume_exact
`minMonthlySearchVolumeExact`	`integer`	optional	Exact search volume minimum Example: {}
`maxMonthlySearchVolumeExact`	`integer`	optional	Exact search volume cap Example: {}
`minMonthlySearchVolumeBroad`	`integer`	optional	Broad search volume minimum Example: {}
`maxMonthlySearchVolumeBroad`	`integer`	optional	Broad search volume cap Example: {}
`minWordCount`	`integer`	optional	Minimum number of keywords (used to filter long-tail words) Example: {}
`maxWordCount`	`integer`	optional	Key words maximum number of words Example: {}
`minOrganicProductCount`	`integer`	optional	Minimum number of natural ranking products Example: {}
`maxOrganicProductCount`	`integer`	optional	Maximum number of natural ranking products Example: {}

Response fields

Treat structuredContent as the programmatic API response payload.

Name	Type	Required	Description
`costToken`	`integer`	optional	Number of tokens consumed Example: {}
`keywordInfoList`	`array`	optional	Keyword information list Example: {}
`name`	`string`	optional	Keyword name Example: {}
`country`	`string`	optional	market code Example: {}
`monthlySearchVolumeExact`	`integer`	optional	Average monthly exact match search volume Example: {}
`monthlySearchVolumeBroad`	`integer`	optional	Average monthly broad match search volume Example: {}
`monthlyTrend`	`number`	optional	Monthly search volume percentage change Example: {}
`quarterlyTrend`	`number`	optional	Quarterly search volume percentage change Example: {}
`dominantCategory`	`string`	optional	Category with the highest proportion in search results Example: {}
`relevancyScore`	`integer`	optional	Relevance score to seed word Example: {}
`easeOfRankingScore`	`integer`	optional	Ease of ranking score (the higher, the easier it is to rank) Example: {}
`organicProductCount`	`integer`	optional	Number of naturally ranked products Example: {}
`sponsoredProductCount`	`integer`	optional	Advertising product quantity Example: {}
`ppcBidExact`	`number`	optional	Exact match PPC recommended bid (USD) Example: {}
`ppcBidBroad`	`number`	optional	Broad match PPC recommended bid (USD) Example: {}
`spBrandAdBid`	`number`	optional	Sponsored Brand Ad Recommended Bid (USD) Example: {}
`recommendedPromotions`	`integer`	optional	Recommended promotional gift quantity Example: {}

Examples

Example arguments

{
  "marketplace": "us",
  "needCount": 20,
  "searchTerms": "yoga mat"
}

Example structuredContent

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