Metrics for specific keywords

You are wiring up the superagnt "SEO" API to use this endpoint: Metrics for specific keywords.

1. CONNECT over MCP (preferred). No token to paste either way.
   On Claude (claude.ai, the desktop app, or Claude Code signed in with a Claude
   account), the server is a connector: give the user this link, they click Add
   and approve:
     https://claude.ai/customize/connectors/yours?modal=add-custom-connector&connectorName=superagnt&connectorUrl=https%3A%2F%2Fmcp.superagnt.com%2Fmcp&open_in_browser=1
   Any other MCP client (or Claude Code signed in with an API key): add the server
   and let the client run the browser sign-in:
     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_overview
   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.superagnt.com/keyword-overview
     Header: Authorization: Bearer <YOUR_AGNTDATA_API_KEY>
   Required parameters:
    - keywords (array, required) — The exact keywords to look up (1-700). Cost scales with the number of keywords.
   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'.

3. COST & KEY. This endpoint is metered — pricing varies by request, from $0.05 per call. Only successful calls are charged.
   Get a superagnt API key at https://app.superagnt.com.

4. TEST. Connect the server (or set the key), discover the tool
   (data_seo_keyword_overview), 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://www.superagnt.com/docs/apis/seo/endpoints/keyword_overview.md

{
  "name": "keyword_overview",
  "description": "Returns full metrics for the exact keywords you pass: search volume, CPC and competition (keyword_info), keyword difficulty (keyword_properties.keyword_difficulty), trend history and SERP characteristics. Use this when you already know the keywords and need their numbers; use keyword_ideas when you need to discover keywords.",
  "parameters": {
    "type": "object",
    "properties": {
      "keywords": {
        "type": "array",
        "items": {
          "type": "string"
        },
        "maxItems": 700,
        "description": "The exact keywords to look up (1-700). Cost scales with the number of keywords."
      },
      "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"
      }
    },
    "required": [
      "keywords"
    ]
  }
}