I am also interested in this. Would like to distribute an extension to testers. MacOS has no TestFlight equivalent.

@timothy.hatcher Hi, any update on this? I've been checking safari builds as they come out, and the API has been missing in every case. Do you know if there are any plans for this?

Any update on this?

What are our chances with getting these APIs ?

@timothy.hatcher Thanks, the ticket is here: https://feedbackassistant.apple.com/feedback/8730949

@timothy.hatcher ?