Migration & Compatibility

This guide ensures smooth transitions between SDK versions and addresses common compatibility concerns.

Backward Compatibility Promise

All SDK versions 2.x maintain 100% backward compatibility. Your existing code will continue to work without any modifications when upgrading.

No-Risk Upgrade Process

Step 1: Update CDN Reference

Simply change your script tag - that's it!

<!-- Before: Any 2.x version -->
<script src="https://cdn.firstoken.co/captures/js/2.1/sdk.js"></script>
<!-- or -->
<script src="https://cdn.firstoken.co/captures/js/2.2/sdk.js"></script>

<!-- After: Latest version -->
<script src="https://cdn.firstoken.co/captures/js/2.3/sdk.js"></script>

Step 2: Test Your Implementation

Your existing code should work unchanged:

Step 3: Enjoy New Features (Optional)

New features are available when you're ready to use them. Implement JWT only when you need enhanced security.

To encrypt payload data sent to us, please contact support to enable this feature on your inbound route.

Support Timeline

• 2.3: Active development

• 2.2: Full support

• 2.1: Maintenance mode