> ## 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.

# CognitionExtensionNotification

> Discriminated union of the Cognition extension notifications, on .

Discriminated union of the Cognition extension notifications, on `method`.

```typescript
type CognitionExtensionNotification = AgentStoppedNotification | CompactionNotification | ConnectionRetryNotification | ThinkingCompleteNotification | BillingInformationNotification | OutputNotification | ShowModalNotification | ClipboardWriteNotification | BrowserPreviewCaptureNotification | BrowserPreviewOpenedNotification | RevertStepsUpdatedNotification | RevertHistoryRewoundNotification | McpServersChangedNotification | PluginsChangedNotification | MessagesInQueuedNotification | EphemeralPresenceNotification | EphemeralUpdateNotification | UnknownExtensionNotification
```


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