Discover companies

You are wiring up the superagnt "Lead APIs" API to use this endpoint: Discover companies.

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_agnt_companies_discover
   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/companies/discover
     Header: Authorization: Bearer <YOUR_AGNTDATA_API_KEY>
   Required parameters:
    - (none)
   Optional parameters:
    - query (string, optional) — Free-text query (e.g. "AI startups in healthcare"). Combine with `filters` or use alone.
    - filters (object, optional) — Filter object. Supported keys (each is an array unless noted): `industries` (array of industry strings — e.g. ["Computer Software", "Internet"]); `headcount` (string range bucket — one of "1-10", "11-50", "51-200", "201-500", "501-1000", "1001-5000", "5001-10000", "10001+"); `company_type` (array — e.g. ["educational", "government", "nonprofit", "private", "public", "self_employed"]); `technology` (array of technology slugs — e.g. ["stripe", "salesforce"]); `country` (array of ISO-3166 alpha-2 codes — e.g. ["US", "GB"]). Use the keys above exactly as written; flat aliases like `industry` (singular), `headcount_min`, or `headcount_max` are ignored and yield empty results. Example: `{ "industries": ["Computer Software"], "headcount": "1001-5000", "country": ["US"] }`.

3. COST & KEY. This endpoint is metered — pricing varies by request, from $0.01 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_agnt_companies_discover), 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/lead/agnt/endpoints/companies_discover.md

{
  "name": "companies_discover",
  "description": "Find companies matching a set of criteria. Pass either a natural-language `query` or structured `filters` (industry, headcount, location, technology, funding, keywords, …). Returns paginated company summaries.",
  "parameters": {
    "type": "object",
    "properties": {
      "query": {
        "type": "string",
        "minLength": 1,
        "description": "Free-text query (e.g. \"AI startups in healthcare\"). Combine with `filters` or use alone."
      },
      "filters": {
        "type": "object",
        "additionalProperties": {},
        "description": "Filter object. Supported keys (each is an array unless noted): `industries` (array of industry strings — e.g. [\"Computer Software\", \"Internet\"]); `headcount` (string range bucket — one of \"1-10\", \"11-50\", \"51-200\", \"201-500\", \"501-1000\", \"1001-5000\", \"5001-10000\", \"10001+\"); `company_type` (array — e.g. [\"educational\", \"government\", \"nonprofit\", \"private\", \"public\", \"self_employed\"]); `technology` (array of technology slugs — e.g. [\"stripe\", \"salesforce\"]); `country` (array of ISO-3166 alpha-2 codes — e.g. [\"US\", \"GB\"]). Use the keys above exactly as written; flat aliases like `industry` (singular), `headcount_min`, or `headcount_max` are ignored and yield empty results. Example: `{ \"industries\": [\"Computer Software\"], \"headcount\": \"1001-5000\", \"country\": [\"US\"] }`."
      }
    },
    "required": []
  }
}