Keyword gap between two domains

You are wiring up the agntdata "SEO" API to use this endpoint: Keyword gap between two domains.

1. CONNECT over MCP (preferred). Add the superagnt MCP server, then let the client
   run OAuth on first tool call — no token to paste:
     claude mcp add --scope user --transport http superagnt https://mcp.superagnt.com/mcp
     claude mcp login superagnt
   MCP endpoint: https://mcp.superagnt.com/mcp
   After connecting, the tool you want is named exactly:
     data_seo_keyword_gap
   Call agnt_tools_search or agnt_tools_list_enabled to confirm it is available.

2. REST fallback (if you are not using MCP):
     POST https://api.agntdata.dev/keyword-gap
     Header: Authorization: Bearer <YOUR_AGNTDATA_API_KEY>
   Required parameters:
    - target1 (string, required) — First domain (e.g. your domain), no protocol.
    - target2 (string, required) — Second domain (e.g. a competitor), no protocol.
   Optional parameters:
    - location_code (integer, optional) — Geo target as a location code. Default 2840 (United States).
    - language_code (string, optional) — Two-letter language code. Default 'en'.
    - limit (integer, optional) — Max intersecting keywords to return. Default 100.
    - offset (integer, optional) — Pagination offset.
    - filters (array, optional) — Optional filter expression as [field, operator, value] triples joined by 'and'/'or'. Operators: =, <>, <, <=, >, >=, in, not_in, like, not_like. Recipe (their wins, your gaps): [["first_domain_serp_element.rank_absolute",">",20],"and",["second_domain_serp_element.rank_absolute","<=",10]].
    - order_by (array, optional) — Sort rules.

3. COST & KEY. This endpoint is priced per call in credits, and each successful response reports its own cost in its meta.costCents field. Only successful calls are charged.
   Get an agntdata API key at https://app.agntdata.dev.

4. TEST. Connect the server (or set the key), discover the tool
   (data_seo_keyword_gap), run one minimal call with just the required parameters,
   and report back the shape of the JSON response (top-level fields).

Reference (machine-readable variant): https://superagnt.com/docs/apis/seo/endpoints/keyword_gap.md

{
  "name": "keyword_gap",
  "description": "Compares two domains' organic rankings keyword by keyword. Each row carries keyword_data plus first_domain_serp_element (target1's ranking) and second_domain_serp_element (target2's) with rank_absolute, rank_group and the ranked URL. The classic gap query is: competitor ranks well, you don't — filters: [[\"first_domain_serp_element.rank_absolute\",\">\",20],\"and\",[\"second_domain_serp_element.rank_absolute\",\"<=\",10]] with target1 = you, target2 = the competitor (a missing element means that domain does not rank at all). Cost scales with rows; the default 100 is enough for most gap analyses.",
  "parameters": {
    "type": "object",
    "properties": {
      "target1": {
        "type": "string",
        "description": "First domain (e.g. your domain), no protocol."
      },
      "target2": {
        "type": "string",
        "description": "Second domain (e.g. a competitor), no protocol."
      },
      "location_code": {
        "type": "integer",
        "description": "Geo target as a location code. Default 2840 (United States).",
        "default": 2840
      },
      "language_code": {
        "type": "string",
        "description": "Two-letter language code. Default 'en'.",
        "default": "en"
      },
      "limit": {
        "type": "integer",
        "minimum": 1,
        "maximum": 1000,
        "default": 100,
        "description": "Max intersecting keywords to return. Default 100."
      },
      "offset": {
        "type": "integer",
        "minimum": 0,
        "description": "Pagination offset."
      },
      "filters": {
        "type": "array",
        "items": {},
        "description": "Optional filter expression as [field, operator, value] triples joined by 'and'/'or'. Operators: =, <>, <, <=, >, >=, in, not_in, like, not_like. Recipe (their wins, your gaps): [[\"first_domain_serp_element.rank_absolute\",\">\",20],\"and\",[\"second_domain_serp_element.rank_absolute\",\"<=\",10]]."
      },
      "order_by": {
        "type": "array",
        "items": {
          "type": "string"
        },
        "description": "Sort rules."
      }
    },
    "required": [
      "target1",
      "target2"
    ]
  }
}