> For the complete documentation index, see [llms.txt](https://docs.coda.co/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.coda.co/https-coda-payments.gitbook.io-zhong-wen-coda-private-technical-documentation/codapay/hou-duan-api-ji-cheng/direct-card-api-ji-cheng/ru-men-zhi-nan/shen-fen-yan-zheng-he-shou-quan.md).

# 身份验证和授权

### 身份验证指南 <a href="#authentication-guide" id="authentication-guide"></a>

Direct Card API 支持 JWT 和 x-signature 作为主要身份验证机制。要向我们的系统发送请求，您需要进行身份验证。为此，您需要在 API 请求的标头中包含以下字段：

* 内容类型
* X-API密钥
* 授权

X签名用于通知端点。有关更多详细信息，请[参阅“获取交易状态更改通知” 。](https://docs.coda.co/codapay/hosted-payment-page-integration/get-notified-of-a-transaction-status-change)

这些参数的描述如下表所示：

| 参数名称    | 描述                             | 必需的 | 验证/示例                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| ------- | ------------------------------ | --- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| 内容类型    | 指示资源的原始媒体类型                    | 是   | 该值必须为“application/json”。                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
| X-API密钥 | 您的 API 密钥                      | 是   | X-API密钥：9ezEvY3UZv72ouqeLnzeL45ylrbPdZ5C6Y3e2c1H                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
| 授权      | 根据标头、有效负载和签名生成 JSON Web Token。 | 是   | <p>授权：</p><p>持有人</p><p>eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9。</p><p>eyJhcGlLZXkiOiIzOWFhNmI5ZDhjNGZmYjFhOT</p><p>QwM2I1MTQ2OWVmZDQ3ZSIsIm9yZGVySWQi</p><p>OiIyMDIwMDMzMDE0MjYwMCIsImxhbmciOiJlb</p><p>iIsIm1lcmNoYW50TmFtZSI6Iktva28gZUJvb2tzIiwi</p><p>cGF5VHlwZSI6NSwicGF5Q2hhbm5lbCI6MzMyLC</p><p>JwYXlQcm92aWRlciI6NTA2LCJpdGVtcyI6W3siY2</p><p>9kZSI6IjEiLCJuYW1lIjoiT25lIERheSIsInByaWNlIjoxM</p><p>H1dLCJpYXQiOjE1ODU3MDE3MzMsImNoZWNrc</p><p>3VtIjoiZjQwZmM5ZTc0ZDY2MmRhZmY1MDc0MD</p><p>NiZmM3YmEyOGUifQ.1vnmI6ayPNMHV9FNyx1</p> |
| x签名     | 要执行完整性检查，需要校验和的签名值。            | 是   | pOsnb4LGor0/iOPsc/7ufSiQHslKkV6/iJ6c6tEpP3k=                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |

<br>


---

# 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.coda.co/https-coda-payments.gitbook.io-zhong-wen-coda-private-technical-documentation/codapay/hou-duan-api-ji-cheng/direct-card-api-ji-cheng/ru-men-zhi-nan/shen-fen-yan-zheng-he-shou-quan.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.