curl --request GET \
  --url https://api.example.com/webhooks/stats \
  --header 'X-API-Key: <api-key>'

{
  "total_webhooks": 123,
  "active_webhooks": 123,
  "total_deliveries": 123,
  "successful_deliveries": 123,
  "failed_deliveries": 123,
  "success_rate": 123
}