# Page Not Found

The URL `zh-cn/chuang-jian-yun-xing-huan-jing/yin-yong-wei-xin-zhi-fu-api` does not exist. This page may have been moved, renamed, or deleted.

## Suggested Pages

You may be looking for one of the following:
- [敏感信息加解密](https://wechatpay-api.gitbook.io/wechatpay-api-v3/qian-ming-zhi-nan-1/min-gan-xin-xi-jia-mi.md)
- [签名相关](https://wechatpay-api.gitbook.io/wechatpay-api-v3/chang-jian-wen-ti/qian-ming-xiang-guan.md)
- [证书相关](https://wechatpay-api.gitbook.io/wechatpay-api-v3/chang-jian-wen-ti/zheng-shu-xiang-guan.md)
- [平台证书更新指引](https://wechatpay-api.gitbook.io/wechatpay-api-v3/qian-ming-zhi-nan-1/wei-xin-zhi-fu-ping-tai-zheng-shu-geng-xin-zhi-yin.md)
- [其他](https://wechatpay-api.gitbook.io/wechatpay-api-v3/chang-jian-wen-ti/api-v3-mi-yao-xiang-guan.md)

## How to find the correct page

If the exact page cannot be found, you can still retrieve the information using the documentation query interface.

### Option 1 — Ask a question (recommended)

Perform an HTTP GET request on the documentation index with the `ask` parameter:

```
GET https://wechatpay-api.gitbook.io/wechatpay-api-v3/qian-ming-zhi-nan-1/min-gan-xin-xi-jia-mi.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.

### Option 2 — Browse the documentation index

Full index: https://wechatpay-api.gitbook.io/wechatpay-api-v3/sitemap.md

Use this to discover valid page paths or navigate the documentation structure.

### Option 3 — Retrieve the full documentation corpus

Full export: https://wechatpay-api.gitbook.io/wechatpay-api-v3/llms-full.txt

Use this to access all content at once and perform your own parsing or retrieval. It will be more expensive.

## Tips for requesting documentation

Prefer `.md` URLs for structured content, append `.md` to URLs (e.g., `/wechatpay-api-v3/qian-ming-zhi-nan-1/min-gan-xin-xi-jia-mi.md`).

You may also use `Accept: text/markdown` header for content negotiation.