# Manage Users

You can manage PostgreSQL users in your cluster using the IONOS Cloud API. Programmatically create, list, retrieve, update, and remove users by sending requests to the cluster's user management endpoint. The following APIs covers the available operations and provides example requests and responses for each.

## Quick Links

<table data-view="cards"><thead><tr><th></th><th></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td><mark style="color:blue;"><strong>List all Users</strong></mark></td><td>Learn how to list all PostgreSQL users in your cluster.</td><td><a href="manage-users/list-all-users">list-all-users</a></td></tr><tr><td><mark style="color:blue;"><strong>List System Users</strong></mark></td><td>Learn how to list all PostgreSQL system users in your cluster.</td><td><a href="manage-users/list-system-users">list-system-users</a></td></tr><tr><td><mark style="color:blue;"><strong>Retrieve a Single User</strong></mark></td><td>Learn how to retrieve details for a specific PostgreSQL user.</td><td><a href="manage-users/retrieve-a-single-user">retrieve-a-single-user</a></td></tr><tr><td><mark style="color:blue;"><strong>Create a User</strong></mark></td><td>Learn how to create a new PostgreSQL user.</td><td><a href="manage-users/create-a-user">create-a-user</a></td></tr><tr><td><mark style="color:blue;"><strong>Remove a User</strong></mark></td><td>Learn how to remove a PostgreSQL user from your cluster.</td><td><a href="manage-users/remove-a-user">remove-a-user</a></td></tr><tr><td><mark style="color:blue;"><strong>Change the Login Password</strong></mark></td><td>Learn how to change the login password for a PostgreSQL user.</td><td><a href="manage-users/change-login-password">change-login-password</a></td></tr></tbody></table>