ToolCallStartEvent

Defined in: packages/ai/src/types.ts:1331

Emitted when a tool call starts.

@ag-ui/core provides: toolCallId, toolCallName, parentMessageId?, subagentRunId?

Extends#

• Omit<AGUIToolCallStartEvent, "type">

Properties#

metadata?#

optional metadata?: Record<string, any>;

Defined in: packages/ai/src/types.ts:1339

Provider-specific metadata to carry into the ToolCall.

Overrides#

Omit.metadata

toolName?#

optional toolName?: string;

Defined in: packages/ai/src/types.ts:1337

Alias of toolCallName. Kept so existing stream readers still compile.

type#

type: "TOOL_CALL_START";

Defined in: packages/ai/src/types.ts:1335