curl --request GET \
  --url http://localhost:3000/api/v1/providers/ \
  --header 'x-api-key: <api-key>'

[
  {
    "id": "prov_1",
    "company": "Proveedor SAC",
    "contactName": "Juan Pérez",
    "email": "contacto@proveedor.com"
  }
]