Method●Since v1.0

handleToolStart

Called at the start of a Tool run, with the tool name and input and the run ID.

handleToolStart(
  tool: Serialized,
  input: string,
  runId: string = ...,
  _parentRunId: string | undefined = undefined,
  _tags: string[] | undefined = undefined,
  _metadata: Record<string, unknown> | undefined = undefined,
  runName: string | undefined = undefined,
  toolCallId: string | undefined = undefined
): Promise<CallbackManagerForToolRun>

Parameters

Name	Type	Description
`tool`*	`Serialized`
`input`*	`string`
`runId`	`string`	Default:`...`
`_parentRunId`	`string \| undefined`	Default:`undefined`
`_tags`	`string[] \| undefined`	Default:`undefined`
`_metadata`	`Record<string, unknown> \| undefined`	Default:`undefined`
`runName`	`string \| undefined`	Default:`undefined`
`toolCallId`	`string \| undefined`	Default:`undefined`

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handleToolStart

Parameters

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handleToolStart

Parameters