Domains linking to competitors but not you

You are wiring up the superagnt "SEO" API to use this endpoint: Domains linking to competitors but not you.

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_backlink_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.superagnt.com/backlink-gap
     Header: Authorization: Bearer <YOUR_AGNTDATA_API_KEY>
   Required parameters:
    - targets (array, required) — Competitor domains whose backlink sources to intersect (1-20).
   Optional parameters:
    - exclude_targets (array, optional) — Domains the referring sites must NOT already link to. Put your own domain here.
    - limit (integer, optional) — Max referring domains to return. Default 100.
    - offset (integer, optional) — Pagination offset.
    - filters (array, optional) — Optional filter expression, e.g. minimum domain rank.
    - order_by (array, optional) — Sort rules, e.g. ["1.rank,desc"].

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_backlink_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://www.superagnt.com/docs/apis/seo/endpoints/backlink_gap.md

{
  "name": "backlink_gap",
  "description": "Finds domains that link to one or more competitor targets but NOT to the excluded target (you). The output is a ready-made link-building prospect list; chain it with an email-finder tool to turn rows into outreach. Response shape: each row's referring domain lives at items[].domain_intersection[\"1\"], [\"2\"], ... keyed by the 1-based index of your `targets` array, with that referring domain's own authority score in `rank` (0-1000ish, higher is stronger; this is the referring domain's rank, a different metric from the target-domain rank in backlinks_summary). Default sort is rank descending. When ranking prospects, check referring_domains and backlinks together — a huge backlink count with few referring domains usually means sitewide boilerplate links, not authority.",
  "parameters": {
    "type": "object",
    "properties": {
      "targets": {
        "type": "array",
        "items": {
          "type": "string"
        },
        "minItems": 1,
        "maxItems": 20,
        "description": "Competitor domains whose backlink sources to intersect (1-20)."
      },
      "exclude_targets": {
        "type": "array",
        "items": {
          "type": "string"
        },
        "maxItems": 10,
        "description": "Domains the referring sites must NOT already link to. Put your own domain here."
      },
      "limit": {
        "type": "integer",
        "minimum": 1,
        "maximum": 1000,
        "default": 100,
        "description": "Max referring domains to return. Default 100."
      },
      "offset": {
        "type": "integer",
        "minimum": 0,
        "description": "Pagination offset."
      },
      "filters": {
        "type": "array",
        "items": {},
        "description": "Optional filter expression, e.g. minimum domain rank."
      },
      "order_by": {
        "type": "array",
        "items": {
          "type": "string"
        },
        "description": "Sort rules, e.g. [\"1.rank,desc\"]."
      }
    },
    "required": [
      "targets"
    ]
  }
}