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

# session.isExpired

> Local clock check, for interface copy only. Core never gates a request on it: a device clock is not authoritative, and an expired token comes back as 401 session_token.invalid_or_expired.

```ts theme={null}
isExpired(skewMs?: number): boolean
```

## Example

```ts theme={null}
if (session.isExpired()) showTapAgain();
```