tools:
  - name: chat-policy.plan
    description: 在委托前校验任务和步骤预算，输出读取、执行、核验的计划及权限约束。
    handler: execution_policy
    parameters:
      type: object
      additionalProperties: false
      properties:
        task: {type: string, minLength: 1, maxLength: 16000}
        max_steps: {type: integer, minimum: 1, maximum: 10}
      required: [task]