Function call

src/tools/WorkflowTool/WorkflowTool.ts:498–552

(input, toolUseContext, canUseTool, parentMessage)

    return null
  },
  async call(input, toolUseContext, canUseTool, parentMessage) {
    if (toolUseContext.agentId) {
      return {
        data: {
          status: 'disabled' as const,
          message:
            'Workflow must be called from the main thread, not from a subagent.',
        },
      }
    }

    const agents = resolveWorkflowAgents(input.agents, toolUseContext)
    const workflowAbortController = new AbortController()
    const rootSetAppState =
      toolUseContext.setAppStateForTasks ?? toolUseContext.setAppState
    const task = registerWorkflowTask(rootSetAppState, {
      workflowName: input.workflow_name,
      objective: input.objective,
      executionMode: input.execution,
      agents,
      abortController: workflowAbortController,
      toolUseId: toolUseContext.toolUseId,
    })

    void workflowRuntime({
      taskId: task.id,
      workflowName: input.workflow_name,
      objective: input.objective,
      executionMode: input.execution,
      agents,
      workflowAbortController,
      toolUseContext,
      canUseTool,
      parentMessage,
      rootSetAppState,
    }).catch(error => {
      appendWorkflowLog(task.id, `Workflow ${input.workflow_name} failed: ${errorMessage(error)}`)
      finalizeWorkflowTask(task.id, rootSetAppState, {
        status: 'failed',
        error: errorMessage(error),
      })
    })

    return {
      data: {
        status: 'async_launched' as const,
        message: `Workflow "${input.workflow_name}" launched in the background with ${agents.length} agent${agents.length === 1 ? '' : 's'} (${input.execution}).`,
        taskId: task.id,
        workflowName: input.workflow_name,
        outputFile: getTaskOutputPath(task.id),
        agentCount: agents.length,
        execution: input.execution,
      },
    }
  },
  mapToolResultToToolResultBlockParam(content, toolUseID) {
    const result = content as Output
    if (result.status === 'async_launched') {