---
updatedAt: 2025-12-05T03:17:00.000Z
agentTools:
  projectIndex: https://developer.paze.com/public/llms.txt
---

# Performance Guidelines

# JavaScript API Latency Estimates

Merchants can estimate that API response latency for the Paze Merchant JavaScript Software Development Kit will roughly correspond to the following.

> **Note**: The numbers below constitute estimates to be used for system design guidance and are subject to network latency and third-party services beyond Paze’s control. They do not represent a binding Service Level Agreement (SLA) or commitment by the Paze service.

## JavaScript API Latency Estimates

<Table align={["left","left","left"]}>
  <thead>
    <tr>
      <th>
        API
      </th>

      <th>
        Latency (estimated)
      </th>

      <th>
        Comment
      </th>
    </tr>
  </thead>

  <tbody>
    <tr>
      <td>
        CanCheckout
      </td>

      <td>
        5000ms
      </td>

      <td>
        To validate wallet presence for given lookup key

        * **Note**: While unexpected, timeouts may possibly affect typical latency response times
      </td>
    </tr>

    <tr>
      <td>
        Checkout
      </td>

      <td>
        5000ms
      </td>

      <td>
        To render appropriate wallet experience for consumers; may be affected by the time duration of a Consumer’s actions within the experience (i.e. enter OTP, select card, etc.)

        * **Note**: While unexpected, timeouts may possibly affect typical latency response times
      </td>
    </tr>

    <tr>
      <td>
        Complete
      </td>

      <td>
        3000ms
      </td>

      <td>
        To retrieve required transaction data from card networks
      </td>
    </tr>
  </tbody>
</Table>

**Note**: TLS versions 1.0 and 1.1 have been deprecated.

## Estimated API Response Time

| API         | Estimate Response Time            |
| :---------- | :-------------------------------- |
| Initialize  | \~100ms or less                   |
| CanCheckout | \~290ms                           |
| Checkout    | Dependent on Consumer interaction |
| Complete    | \~3 seconds                       |