Keywords · MCP TOOL

batch_keyword_difficulty

Score up to ten keywords for one store and country.

Set up your assistant · Authentication and errors

When to use it

Compare a shortlist ranked by opportunity rather than issuing separate requests for every term. Check failed for terms that could not be scored.

Parameters

Name	Type	Required	Default	Allowed values	Description
`keywords`	string[]	Yes	`—`	—	Store search terms to score together. Minimum items: 1. Maximum items: 10. Item minimum length: 1. Item maximum length: 80.
`country`	string	No	`"us"`	—	Two-letter storefront country code. Minimum length: 2. Maximum length: 2.
`source`	string	No	`"apple_mobile"`	apple_mobile, google_mobile, ios, android	Store: apple_mobile/ios or google_mobile/android.
`topAppsLimit`	integer	No	`3`	—	Maximum ranking apps per keyword. Minimum: 0. Maximum: 50.
`includeTopApps`	boolean	No	`false`	—	Include ranking app profiles.

Defaults and constraints come from the published Zod input schema. “—” means no schema default or no enum restriction. Use JSON values of the listed type; additional handler rules are described above.

Example prompts

Compare sleep sounds and white noise in the US App Store.

Example call

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "batch_keyword_difficulty",
    "arguments": {
      "keywords": [
        "sleep sounds",
        "white noise"
      ],
      "country": "us"
    }
  }
}

Example result

Illustrative, abridged JSON-RPC result. Only selected fields are shown; empty arrays illustrate a response with no rows. These are not current catalog observations. Parse the JSON inside content[].text.

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "content": [
      {
        "type": "text",
        "text": "{\"data\":[],\"failed\":[]}"
      }
    ]
  }
}

Free vs paid results

Free keeps keyword difficulty but hides popularity, traffic and opportunity. Ranking apps at positions 1–10 keep their identities; positions 11+ are locked. Revenue estimates are hidden. Basic and Pro unlock these fields.

Paid access does not fill coverage gaps or unknown values. Returned plan metadata and lock notes explain redaction where applicable. Read the full Free data policy.

Rate limits and usage credit

Plan	Calls per tool / day	All tools / week
Free	5	50
Basic	100	700
Pro	300	2,500

Days reset at 00:00 UTC. The combined ISO week resets Monday at 00:00 UTC. Every served tool call counts, including cached reads. Failed or refused calls are released along with any charge. Compare plans.

After either allowance, Basic and Pro can opt in to pay $0.05 in usage credit per call to batch_keyword_difficulty. A call exceeding both windows is charged once. Free is refused past its allowances; paid plans without opt-in or enough credit are also refused with HTTP 402 / JSON-RPC -32004.

Credential request throttles and, for live keyword work, store-work throttles also apply. Follow retry instructions in the error reference.