> ## Documentation Index
> Fetch the complete documentation index at: https://docs.quickblox.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Log Out

> Downgrades a user session to an application session.

<Warning>
  If you log out a user session, you downgrade to application session. Learn more about the difference between a user session and application session [here](/reference/authentication#application-vs-user-session-token).
</Warning>

#### Headers

<ParamField header="QB-Token" type="string" required> A user or application session token. See [Authentication](/reference/authentication) page to learn more about session tokens. </ParamField>

#### Responses

<AccordionGroup>
  <Accordion title="200">
    A successful response
  </Accordion>

  <Accordion title="401">
    An error response

    <ResponseField name="errors" type="object">
      <Expandable title="properties">
        <ResponseField name="base" type="array of strings" />
      </Expandable>
    </ResponseField>
  </Accordion>

  <Accordion title="403">
    An error response

    <ResponseField name="errors" type="object">
      <Expandable title="properties">
        <ResponseField name="base" type="array of strings" />
      </Expandable>
    </ResponseField>
  </Accordion>
</AccordionGroup>

<RequestExample>
  ```bash cURL theme={null}
  curl -X DELETE \
  -H "QB-Token: 8b75a6c7191285499d890a81df4ee7fe49bc732a" \
  https://api.quickblox.com/login.json
  ```
</RequestExample>

<ResponseExample>
  ```json 200 theme={null}
  Empty body
  ```

  ```json 401 theme={null}
  {
    "errors": {
      "base": [
        "Forbidden. Need user."
      ]
    }
  }
  ```

  ```json 403 theme={null}
  {
    "errors": {
      "base": [
        "Required session does not exist"
      ]
    }
  }
  ```
</ResponseExample>