> For the complete documentation index, see [llms.txt](https://docs.prevps.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.prevps.com/documentation/documentation-zh/zhang-dan-yu-ke-hu-qu.md).

# 账单 与 客户区

- [客户区](https://docs.prevps.com/documentation/documentation-zh/zhang-dan-yu-ke-hu-qu/ke-hu-qu.md): 管理服务、域名和发票的位置。
- [发票与付款](https://docs.prevps.com/documentation/documentation-zh/zhang-dan-yu-ke-hu-qu/fa-piao-yu-fu-kuan.md): 查找发票、付款并确认付款状态。
- [升级与降级](https://docs.prevps.com/documentation/documentation-zh/zhang-dan-yu-ke-hu-qu/sheng-ji-yu-jiang-ji.md): 更改现有服务的计划/资源。
- [取消与退款](https://docs.prevps.com/documentation/documentation-zh/zhang-dan-yu-ke-hu-qu/qu-xiao-yu-tui-kuan.md): 如何取消服务以及退款规则所在位置。
- [添加资金（信用余额）](https://docs.prevps.com/documentation/documentation-zh/zhang-dan-yu-ke-hu-qu/tian-jia-zi-jin-xin-yong-yue.md): 为您的帐户充值信用并使用它自动支付发票。


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## 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, and the optional `goal` query parameter:

```
GET https://docs.prevps.com/documentation/documentation-zh/zhang-dan-yu-ke-hu-qu.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

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.