---
title: Check Amazon Pay CV2 API Version
url: amazon-pay-checkout/v1-check-api-version.html
---

You can easily determine the Amazon Pay API Version by inspecting the API endpoint you are calling.

The API endpoint for different regions is structured like this:

<ul id="profileTabs" class="nav nav-tabs">
  <li class="nav-item"><a class="active nav-link noExtIcon" href="#ustab" data-toggle="tab">US</a></li>
  <li class="nav-item"><a class="nav-link noExtIcon" href="#eutab" data-toggle="tab">EU / UK</a></li>
  <li class="nav-item"><a class="nav-link noExtIcon" href="#jptab" data-toggle="tab">JP</a></li>
</ul>
<div class="tab-content">
  <div role="tabpanel" class="tab-pane active" id="ustab">   
<div markdown="block">
```html
https://pay-api.amazon.com/:environment/:version
```
</div>
  </div>
  <div role="tabpanel" class="tab-pane" id="eutab">
<div markdown="block">
```html
https://pay-api.amazon.eu/:environment/:version
```
</div>
  </div>
  <div role="tabpanel" class="tab-pane" id="jptab">
<div markdown="block">
```html
https://pay-api.amazon.jp/:environment/:version
```
</div>
  </div>
</div>

In the provided endpoint, `:version` represents the Amazon Pay CV2 API Version, with possible values being “v1” and “v2”.

If your endpoint resembles `https://pay-api.amazon.com/sandbox/v1` or `https://pay-api.amazon.com/live/v1`, you are on API Version V1. Migration to API Version V2 is possible by following the [Version 2 Migration Guide](../amazon-pay-checkout/version-two-migration-guide.html).

On the other hand, if your endpoint looks like `https://pay-api.amazon.com/sandbox/v2` or `https://pay-api.amazon.com/live/v2`, congratulations, you are already on latest API Version i.e. V2.

For users employing Amazon Pay SDKs, it’s crucial to verify the SDK version in use. API Version V2 is applicable for SDK versions 2.0.0 and later across all four SDKs.