BeforeToolCallEvent

Event triggered just before a tool is executed. Fired after tool lookup but before execution begins.

Extends

new BeforeToolCallEvent(data): BeforeToolCallEvent;

Parameter	Type
`data`	{ `agent`: `AgentData`; `toolUse`: { `name`: `string`; `toolUseId`: `string`; `input`: `JSONValue`; }; `tool`: `Tool`; }
`data.agent`	`AgentData`
`data.toolUse`	{ `name`: `string`; `toolUseId`: `string`; `input`: `JSONValue`; }
`data.toolUse.name`	`string`
`data.toolUse.toolUseId`	`string`
`data.toolUse.input`	`JSONValue`
`data.tool`	`Tool`

BeforeToolCallEvent

readonly type: "beforeToolCallEvent";

readonly agent: AgentData;

readonly toolUse: {
  name: string;
  toolUseId: string;
  input: JSONValue;
};

name: string;

toolUseId: string;

input: JSONValue;

readonly tool: Tool;