Hello.
I think your question relates to the Tweet delete events that are currently posted via user streams?
From our blog post, this feature is coming to the Account Activity API soon:
we will soon start delivering another new activity type - delete events.
It remains part of the Developer Policy and Agreement that your applications should respect the state of Tweets on Twitter:
- If Content is deleted, gains protected status, or is otherwise suspended, withheld, modified, or removed from the Twitter Service (including removal of location information), you will make all reasonable efforts to delete or modify such Content (as applicable) as soon as reasonably possible, and in any case within 24 hours after a request to do so by Twitter or by a Twitter user with regard to their Content, unless otherwise prohibited by applicable law or regulation, and with the express written permission of Twitter.
- If your Service will display Content to the public or to end users of your Service, and you do not use Twitter Kit or Twitter for Websites to do so, then you must use the Twitter API to retrieve the most current version of the Content for such display. If Content ceases to be available through the Twitter API, you may not display such Content and must remove it from non-display portions of your Service as soon as reasonably possible.