curl --request GET \
  --url https://api.x.com/2/tweets/search/stream/rules/counts \
  --header 'Authorization: Bearer <token>'

{
  "data": {
    "all_project_client_apps": [
      {
        "client_app_id": "<string>",
        "rule_count": 123
      }
    ],
    "cap_per_client_app": 123,
    "cap_per_project": 123,
    "client_app_rules_count": {
      "client_app_id": "<string>",
      "rule_count": 123
    },
    "project_rules_count": 123
  },
  "errors": [
    {
      "detail": "<string>",
      "status": 123,
      "title": "<string>",
      "type": "<string>"
    }
  ]
}