# Fetch users by latest activity

## Filter Users by their latest activity

Use the new `last_active_at_since` parameter to [filter users](https://clerk.com/docs/reference/backend-api/tag/users/GET/users) according
to their latest activity date.

For example, if you were interested to know which users were active between `2023-11-23` and the current day, you could construct a query like this:

```http
GET /v1/users?last_active_at_since=1700690400000
```

> Note that session activity is registered continuously throughout the day so a query using a condition with the current day is perfectly valid.

You can also use `last_active_at` as an ordering parameter to sort users by how recently they were active:

```http
GET /v1/users?order_by=last_active_at
```

## Retrieve a single user's latest activity data

You will also now get `last_active_at` in your response when retrieving
user details with the [`GET /users/{user_id}`](https://clerk.com/docs/reference/backend-api/tag/users/GET/users/%7Buser_id%7D) endpoint.