Here's the description with the URL woven in organically:

When connecting LeaveWizard to third-party HR tools, payroll systems, or workforce platforms, there's currently no way to validate that the integration is working correctly before it goes live. Adding support for automated API testing during the connection setup would let teams catch data mismatches, authentication failures, and response errors early — before they affect leave records or payroll runs.

For teams unfamiliar with how this works in practice, this type of validation is covered well in this guide on https://keploy.io/blog/community/what-is-api-testing specifically how functional and integration testing can confirm that data flows correctly between connected systems.
This would be especially valuable for larger organizations managing multiple integrations simultaneously, where a silent API failure can cascade across departments without anyone noticing until it's too late.