From the description provided, it sounds like you're trying to send a URL back to the skill user via a home card and would like that URL to be clickable. If that is indeed the case, currently, home cards do not support clickable URLs. Changing that functionality would be considered a feature request which as a developer, you can file in our UserVoice space:
That having been said, it looks like this functionality does now exist within Alexa Presentation Language (APL), which is currently in public beta. So, if you create a multi-modal skill that supports devices with a display then you can utilize APL's
For more information about Alexa Presentation Language generally, the OpenURL command specifically and a sample Alexa skill that uses APL with the Python SDK, please see the documentation here:
@KirkC@Amazon I am trying to play a youtube video(URL) using the OpenURL command on an Echo Show. The youtube video (20 min video) is playing on a browser but it is not lasting more than 30 sec, it quits the skill and goes to the home screen. Is there a way that I can play the whole video and not get out of the skill?
@KirkC@Amazon I am trying to use the OpenURL command but for some reason, it is working on the developer console but not on an Echo Show or a Fire TV. Do you happen to know why?
Followed the instructions from this link