# POST /users/alive
URL: https://developers.vsee.io/api/user-api/post/users/alive
operationId: keepAlive
Auth: User Token — Requires a user access token from login or SSO.

Keep alive

Send a heartbeat signal to indicate the user is online. Required when a user is in a critical workflow such as waiting for a provider to call.

Send at an interval less than 1/2 of the heartbeat value. Only "alive" patients show up on the provider dashboard.

Parameters:
- X-ApiToken (header, string, required) — API token

Request body (application/x-www-form-urlencoded):
- heartbeat (integer, optional) — Custom heartbeat value in seconds (default: 300s). For mobile, set to ~300s and update every ~250s.

Example request:
```json
{
  "heartbeat": 300
}
```

Responses:
- 200 — Heartbeat acknowledged
```json
{
  "data": {
    "last_connected": 1423023124,
    "heartbeat": 300
  }
}
```
- 401 — Unauthorized
```json
{
  "code": 404,
  "message": "Sorry, this page is not available."
}
```