# 扩展订单 (v2)

REST API 版本 2 引入了两个主要改进：

* 支持通过签名交易进行扩展
* 新增资源类型：带宽

## [**扩展 API (Postman)**](https://www.postman.com/tronsave/tronsave/folder/01yhu2j/extend-order)

\
**扩展功能流程：**
-----------

[步骤 1：获取可扩展的委托人](/chinese/developer/extend-orders-v2/step-1-get-extendable-delegates.md)

[步骤 2：提交扩展请求](/chinese/developer/extend-orders-v2/step-2-extend-request.md)

**以下是付款方式：**

[选项 1：使用 API 密钥进行扩展](/chinese/developer/extend-orders-v2/step-2-extend-request.md#xuan-xiang-1-shi-yong-api-mi-yao-kuo-zhan-ding-dan)

[选项 2：使用签名交易进行扩展](/chinese/developer/extend-orders-v2/step-2-extend-request.md#xuan-xiang-2-shi-yong-qian-ming-jiao-yi-kuo-zhan-ding-dan)

## 测试用API列表 - Nile 测试网 <a href="#api-list-for-testing-tron-nile-testnet" id="api-list-for-testing-tron-nile-testnet"></a>

{% tabs %}
{% tab title="测试\_API" %}

* 检查所有可延长的委托:

  <mark style="color:orange;">`POST`</mark> `https://api-dev.tronsave.io/v2/get-extendable-delegates`
* 通过API密钥创建延长请求:

  <mark style="color:orange;">`POST`</mark> `https://api-dev.tronsave.io/v2/extend-request`
  {% endtab %}
  {% endtabs %}


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.tronsave.io/chinese/developer/extend-orders-v2.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.