> ## Documentation Index
> Fetch the complete documentation index at: https://docs-payment-merchant.keysecure.io/llms.txt
> Use this file to discover all available pages before exploring further.

# 颁发 PCI Client Access Token

颁发 PCI iframe 使用的一次性 Client Access Token。

## 请求头

<ParamField header="Api-Key" type="string" required placeholder="your_api_key">
  apiKey（商户凭证，与 IP 白名单绑定）
</ParamField>

<ParamField header="Timestamp" type="string" required>
  Unix 时间戳（毫秒），与服务端偏差须在 60 秒内，且不接受未来时间戳
</ParamField>

<ParamField header="Access-Token" type="string" required placeholder="your_access_token">
  登录标识（除获取 Token 外必填）
</ParamField>

<ParamField header="Content-Type" type="string" default="application/json">
  固定为 `application/json`
</ParamField>

## 路径参数

<ParamField path="card_no" type="string" required>
  卡单号
</ParamField>

## 返回参数

<ResponseField name="code" type="number">
  响应状态码，`0` 表示成功
</ResponseField>

<ResponseField name="msg" type="string">
  响应消息
</ResponseField>

<ResponseField name="data" type="object">
  返回数据

  <Expandable title="data">
    <ResponseField name="client_access_token" type="string">一次性客户端令牌</ResponseField>
    <ResponseField name="expires_in" type="number">有效期（秒）</ResponseField>
  </Expandable>
</ResponseField>

<RequestExample>
  ```bash Request theme={null}
  curl --request GET \
    --url https://sandbox-openplatform.keysecure.io/open-api/v1/merchant/client/C202605220001/token \
    --header 'Content-Type: application/json' \
    --header 'Api-Key: your_api_key' \
    --header 'Timestamp: 1716307200000' \
    --header 'Access-Token: your_access_token'
  ```
</RequestExample>

<ResponseExample>
  ```json Response theme={null}
  {
    "code": 0,
    "msg": "Success",
    "data": {
      "client_access_token": "",
      "expires_in": 300
    }
  }
  ```
</ResponseExample>