Function call

src/tools/TodoWriteTool/TodoWriteTool.ts:65–103

({ todos }, context)

    return null
  },
  async call({ todos }, context) {
    const appState = context.getAppState()
    const todoKey = context.agentId ?? getSessionId()
    const oldTodos = appState.todos[todoKey] ?? []
    const allDone = todos.every(_ => _.status === 'completed')
    const newTodos = allDone ? [] : todos

    // Structural nudge: if the main-thread agent is closing out a 3+ item
    // list and none of those items was a verification step, append a reminder
    // to the tool result. Fires at the exact loop-exit moment where skips
    // happen ("when the last task closed, the loop exited").
    let verificationNudgeNeeded = false
    if (
      feature('VERIFICATION_AGENT') &&
      getFeatureValue_CACHED_MAY_BE_STALE('tengu_hive_evidence', false) &&
      !context.agentId &&
      allDone &&
      todos.length >= 3 &&
      !todos.some(t => /verif/i.test(t.content))
    ) {
      verificationNudgeNeeded = true
    }

    context.setAppState(prev => ({
      ...prev,
      todos: {
        ...prev.todos,
        [todoKey]: newTodos,
      },
    }))

    return {
      data: {
        oldTodos,
        newTodos: todos,
        verificationNudgeNeeded,
      },
    }
  },
  mapToolResultToToolResultBlockParam({ verificationNudgeNeeded }, toolUseID) {
    const base = `Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable`
    const nudge = verificationNudgeNeeded