# List System Users

Set the `system` parameter to `true` to view system users too. These users are required for administration purposes and cannot be changed or deleted.

{% hint style="info" %}
**Note:** The sample UUID in all following request examples is `498ae72f-411f-11eb-9d07-046c59cc737e`.
{% endhint %}

## Endpoint

Use the following endpoint to get a list of all users, including system users, in your PostgreSQL cluster:

`https://api.ionos.com/databases/postgresql/clusters/{clusterId}/users?system=true`

{% hint style="info" %}
**Note:** The sample UUID is `498ae72f-411f-11eb-9d07-046c59cc737e`.
{% endhint %}

## Request

```bash
curl --request GET \
    --user "clientname@ionos.com:Mb2.r5oHf-0t" \
```

## Response

```json
{
  "id": "c90a5396-1a43-538b-a4c8-564cd0eafc07",
  "items": [
    {
      "id": "6e209957-a468-562e-9867-2a69069044c3",
      "properties": {
        "system": true,
        "username": "ionos_cloud_admin"
      },
      "type": "user"
    },
    {
      "id": "27d4069e-4df9-56cf-8114-1a846589c73a",
      "properties": {
        "system": true,
        "username": "postgres"
      },
      "type": "user"
    },
    {
      "id": "b35402eb-bd7b-512d-92c9-9726db47c101",
      "properties": {
        "system": false,
        "username": "someuser"
      },
      "type": "user"
    },
    {
      "id": "e1ca756d-957e-5e5b-9089-56943078f98c",
      "properties": {
        "system": true,
        "username": "standby"
      },
      "type": "user"
    }
  ],
  "limit": 100,
  "offset": 0,
  "type": "collection"
}
```