Amazon Research JS

Amazon Research JS: keywords/share of voice API

Amazon Research JS: keywords/share of voice API.

MCP tool name

nexscope_data_js_keywords_share_of_voice

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-share-of-voice-1",
  "method": "tools/call",
  "params": {
    "name": "nexscope_data_js_keywords_share_of_voice",
    "arguments": {
      "keyword": "portable charger",
      "marketplace": "us"
    }
  }
}

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
`keyword`	`string`	required	Keywords to be searched Example: {}

Response fields

Treat structuredContent as the programmatic API response payload.

Name	Type	Required	Description
`costToken`	`integer`	optional	Number of tokens consumed Example: {}
`shareOfVoice`	`object`	optional	Share of Voice data subject Example: {}
`id`	`string`	optional	Resource ID Example: {}
`type`	`string`	optional	Fixed value `share_of_voice` Example: {}
`estimated30DaySearchVolume`	`integer`	optional	Exact match search volume over the past 30 days Example: {}
`exactSuggestedBidMedian`	`number`	optional	Median PPC bid (USD) Example: {}
`productCount`	`integer`	optional	Total number of items in the first 3 pages of search results Example: {}
`updatedAt`	`string`	optional	Data update time Example: {}
`topAsinsModelStartDate`	`string`	optional	TOP ASIN click/conversion data window start date Example: {}
`topAsinsModelEndDate`	`string`	optional	TOP ASIN click/conversion data window end date Example: {}
`brands`	`array`	optional	Brand SOV detailed list Example: {}
`topAsins`	`array`	optional	TOP 3 ASIN click conversion list Example: {}
`brand`	`string`	optional	brand name Example: {}
`organicProducts`	`integer`	optional	Number of items in organic search results Example: {}
`sponsoredProducts`	`integer`	optional	The number of products in the ad slot Example: {}
`combinedProducts`	`integer`	optional	Comprehensive product quantity Example: {}
`organicBasicSov`	`number`	optional	Natural search basics SOV (0–1) Example: {}
`organicWeightedSov`	`number`	optional	Natural search weighted SOV (0–1) Example: {}
`sponsoredBasicSov`	`number`	optional	Ad search basics SOV (0–1) Example: {}
`sponsoredWeightedSov`	`number`	optional	Ad Search Weighted SOV (0–1) Example: {}
`combinedBasicSov`	`number`	optional	Comprehensive Basic SOV (0–1) Example: {}
`combinedWeightedSov`	`number`	optional	Comprehensive weighted SOV (0–1) Example: {}
`organicAveragePosition`	`number`	optional	Average organic search ranking position Example: {}
`sponsoredAveragePosition`	`number`	optional	Ad search average position Example: {}
`combinedAveragePosition`	`number`	optional	Overall average ranking position Example: {}
`organicAveragePrice`	`number`	optional	Average price of natural search items Example: {}
`sponsoredAveragePrice`	`number`	optional	Average price of advertised search products Example: {}
`combinedAveragePrice`	`number`	optional	Comprehensive product average price Example: {}
`asin`	`string`	optional	ASIN number Example: {}
`name`	`string`	optional	Product name Example: {}
`brand`	`string`	optional	brand name Example: {}
`clicks`	`integer`	optional	Clicks (30-day window) Example: {}
`conversions`	`integer`	optional	Conversions (30-day window) Example: {}
`conversionRate`	`number`	optional	Conversion rate (0-1) Example: {}

Examples

Example arguments

{
  "keyword": "portable charger",
  "marketplace": "us"
}

Example structuredContent

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