Defined in: types.ts:745

Emitted when a text message starts.

• BaseAGUIEvent

messageId: string;

Defined in: types.ts:748

Unique identifier for this message

optional model: string;

Defined in: types.ts:690

Model identifier for multi-model support

BaseAGUIEvent.model

optional rawEvent: unknown;

Defined in: types.ts:692

Original provider event for debugging/advanced use cases

BaseAGUIEvent.rawEvent

role: "assistant";

Defined in: types.ts:750

Role is always assistant for generated messages

timestamp: number;

Defined in: types.ts:688

BaseAGUIEvent.timestamp

type: "TEXT_MESSAGE_START";

Defined in: types.ts:746

BaseAGUIEvent.type