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

# SessionEvent

```typescript
type SessionEvent = MessageDeltaEvent | ThoughtDeltaEvent | UserMessageEvent | ToolCallEvent | PlanEvent | ModeChangeEvent | CommandsChangeEvent | StatusEvent | ActivityEvent | LifecycleEvent | TypingEvent | PullRequestEvent | TurnStateEvent | RawEvent
```


This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.