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

# IUsernameChatStartModeAction

> Protobuf interface IUsernameChatStartModeAction generated from WAProto.

Defined in: [WAProto/index.d.ts:12924](https://github.com/WhiskeySockets/Baileys/blob/master/WAProto/index.d.ts#L12924)

## Properties

### chatStartMode?

> `optional` **chatStartMode**: `null` | [`ChatStartMode`](/proto-reference/SyncActionValue/UsernameChatStartModeAction/enumerations/ChatStartMode)

Defined in: [WAProto/index.d.ts:12925](https://github.com/WhiskeySockets/Baileys/blob/master/WAProto/index.d.ts#L12925)