An API action that takes the url to clear the cache which creates the twittter card. I work with a publishing CMS and it would be great to allow journalists to not have to use the manual card validator to update the url when a new image is added or headline changed on a story.
A related discussion: https://twittercommunity.com/t/twitter-cards-validation-and-verification-for-domain/15856/10
Thanks for the suggestion! We’ll let you know if we plan to make this an API feature.