Get Supported Countries

You are wiring up the superagnt "Facebook" API to use this endpoint: Get Supported Countries.

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_facebook_get_supported_countries
   Call agnt_tools_search or agnt_tools_list_enabled to confirm it is available.

2. REST fallback (if you are not using MCP):
     GET https://api.superagnt.com/get_supported_countries
     Header: Authorization: Bearer <YOUR_AGNTDATA_API_KEY>
   Required parameters:
    - (none)
   Optional parameters:
    - (none)

3. COST & KEY. Each successful call costs $0.008 in credits. 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_facebook_get_supported_countries), 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/social/facebook/endpoints/Get_Supported_Countries.md

{
  "name": "get_supported_countries",
  "description": "The get_supported_countries endpoint retrieves a list of all available country codes that can be used in other endpoints, such as filtering ads by country. This ensures that you are using valid country codes when making requests.",
  "parameters": {
    "type": "object",
    "properties": {},
    "required": []
  }
}