Defined in: types.ts:778

Emitted when a tool call starts.

• BaseAGUIEvent

optional index: number;

Defined in: types.ts:785

Index for parallel tool calls

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

timestamp: number;

Defined in: types.ts:688

BaseAGUIEvent.timestamp

toolCallId: string;

Defined in: types.ts:781

Unique identifier for this tool call

toolName: string;

Defined in: types.ts:783

Name of the tool being called

type: "TOOL_CALL_START";

Defined in: types.ts:779

BaseAGUIEvent.type